./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) 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_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/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_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/config/svcomp-MemCleanup-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f8d14145608efc0a8f321a178564faff63399ecbab28641c0c2971fec318068f --- 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 01:37:51,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:37:51,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:37:51,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:37:51,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:37:51,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:37:51,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:37:51,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:37:51,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:37:51,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:37:51,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:37:51,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:37:51,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:37:51,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:37:51,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:37:51,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:37:51,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:37:51,060 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:37:51,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:37:51,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:37:51,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:37:51,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:37:51,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:37:51,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:37:51,081 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:37:51,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:37:51,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:37:51,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:37:51,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:37:51,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:37:51,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:37:51,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:37:51,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:37:51,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:37:51,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:37:51,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:37:51,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:37:51,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:37:51,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:37:51,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:37:51,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:37:51,093 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/config/svcomp-MemCleanup-32bit-Taipan_Default.epf [2022-11-03 01:37:51,125 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:37:51,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:37:51,128 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:37:51,129 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:37:51,130 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:37:51,130 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:37:51,130 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:37:51,131 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:37:51,131 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:37:51,131 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:37:51,132 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:37:51,133 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:37:51,133 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:37:51,133 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:37:51,134 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:37:51,134 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:37:51,134 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:37:51,135 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:37:51,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-03 01:37:51,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-03 01:37:51,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:37:51,136 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:37:51,137 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 01:37:51,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:37:51,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:37:51,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:37:51,138 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-03 01:37:51,138 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-03 01:37:51,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:37:51,139 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 01:37:51,139 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:37:51,139 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:37:51,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:37:51,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:37:51,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:37:51,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:37:51,140 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:37:51,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:37:51,141 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:37:51,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:37:51,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:37:51,142 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_f7564d6a-470d-4769-aa8f-b472580a7eeb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8d14145608efc0a8f321a178564faff63399ecbab28641c0c2971fec318068f [2022-11-03 01:37:51,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:37:51,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:37:51,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:37:51,492 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:37:51,493 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:37:51,494 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2022-11-03 01:37:51,571 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/data/b99857f81/b0a1dd5977314517b33e58cb3e3eedd6/FLAG82bf191e4 [2022-11-03 01:37:52,079 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:37:52,080 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2022-11-03 01:37:52,091 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/data/b99857f81/b0a1dd5977314517b33e58cb3e3eedd6/FLAG82bf191e4 [2022-11-03 01:37:52,532 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/data/b99857f81/b0a1dd5977314517b33e58cb3e3eedd6 [2022-11-03 01:37:52,535 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:37:52,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:37:52,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:37:52,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:37:52,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:37:52,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:37:52" (1/1) ... [2022-11-03 01:37:52,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e31017c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:52, skipping insertion in model container [2022-11-03 01:37:52,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:37:52" (1/1) ... [2022-11-03 01:37:52,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:37:52,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:37:52,988 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_f7564d6a-470d-4769-aa8f-b472580a7eeb/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i[22636,22649] [2022-11-03 01:37:53,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:37:53,050 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:37:53,078 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_f7564d6a-470d-4769-aa8f-b472580a7eeb/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i[22636,22649] [2022-11-03 01:37:53,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:37:53,117 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:37:53,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:53 WrapperNode [2022-11-03 01:37:53,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:37:53,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:37:53,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:37:53,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:37:53,126 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:53" (1/1) ... [2022-11-03 01:37:53,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:53" (1/1) ... [2022-11-03 01:37:53,166 INFO L138 Inliner]: procedures = 129, calls = 79, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 203 [2022-11-03 01:37:53,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:37:53,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:37:53,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:37:53,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:37:53,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:53" (1/1) ... [2022-11-03 01:37:53,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:53" (1/1) ... [2022-11-03 01:37:53,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:53" (1/1) ... [2022-11-03 01:37:53,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:53" (1/1) ... [2022-11-03 01:37:53,192 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:53" (1/1) ... [2022-11-03 01:37:53,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:53" (1/1) ... [2022-11-03 01:37:53,202 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:53" (1/1) ... [2022-11-03 01:37:53,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:53" (1/1) ... [2022-11-03 01:37:53,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:37:53,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:37:53,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:37:53,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:37:53,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:53" (1/1) ... [2022-11-03 01:37:53,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:37:53,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:37:53,253 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:37:53,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:37:53,287 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-11-03 01:37:53,288 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-11-03 01:37:53,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:37:53,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:37:53,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:37:53,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:37:53,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:37:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2022-11-03 01:37:53,289 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2022-11-03 01:37:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:37:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:37:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2022-11-03 01:37:53,289 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2022-11-03 01:37:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:37:53,289 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2022-11-03 01:37:53,290 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2022-11-03 01:37:53,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:37:53,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:37:53,429 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:37:53,431 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:37:54,115 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:37:54,230 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:37:54,230 INFO L300 CfgBuilder]: Removed 33 assume(true) statements. [2022-11-03 01:37:54,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:37:54 BoogieIcfgContainer [2022-11-03 01:37:54,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:37:54,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:37:54,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:37:54,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:37:54,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:37:52" (1/3) ... [2022-11-03 01:37:54,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760b5349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:37:54, skipping insertion in model container [2022-11-03 01:37:54,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:37:53" (2/3) ... [2022-11-03 01:37:54,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760b5349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:37:54, skipping insertion in model container [2022-11-03 01:37:54,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:37:54" (3/3) ... [2022-11-03 01:37:54,245 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2022-11-03 01:37:54,268 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:37:54,268 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 83 error locations. [2022-11-03 01:37:54,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:37:54,333 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@30fb0b39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:37:54,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 83 error locations. [2022-11-03 01:37:54,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 91 states have (on average 2.340659340659341) internal successors, (213), 181 states have internal predecessors, (213), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-03 01:37:54,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 01:37:54,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:54,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 01:37:54,347 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:37:54,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:54,353 INFO L85 PathProgramCache]: Analyzing trace with hash 532615, now seen corresponding path program 1 times [2022-11-03 01:37:54,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:54,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583097467] [2022-11-03 01:37:54,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:54,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:54,580 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 01:37:54,581 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:54,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583097467] [2022-11-03 01:37:54,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583097467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:54,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:54,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:37:54,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666103285] [2022-11-03 01:37:54,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:54,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:37:54,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:54,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:37:54,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:37:54,629 INFO L87 Difference]: Start difference. First operand has 194 states, 91 states have (on average 2.340659340659341) internal successors, (213), 181 states have internal predecessors, (213), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 01:37:54,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:54,749 INFO L93 Difference]: Finished difference Result 193 states and 214 transitions. [2022-11-03 01:37:54,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:37:54,752 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-03 01:37:54,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:54,767 INFO L225 Difference]: With dead ends: 193 [2022-11-03 01:37:54,767 INFO L226 Difference]: Without dead ends: 192 [2022-11-03 01:37:54,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 01:37:54,775 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:54,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:37:54,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-03 01:37:54,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-03 01:37:54,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 89 states have (on average 2.101123595505618) internal successors, (187), 179 states have internal predecessors, (187), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 01:37:54,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 213 transitions. [2022-11-03 01:37:54,849 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 213 transitions. Word has length 3 [2022-11-03 01:37:54,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:54,849 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 213 transitions. [2022-11-03 01:37:54,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 01:37:54,850 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 213 transitions. [2022-11-03 01:37:54,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 01:37:54,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:54,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 01:37:54,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:37:54,851 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting chain_nodeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:37:54,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:54,852 INFO L85 PathProgramCache]: Analyzing trace with hash 16812538, now seen corresponding path program 1 times [2022-11-03 01:37:54,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:54,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404512692] [2022-11-03 01:37:54,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:54,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:54,951 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 01:37:54,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:54,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404512692] [2022-11-03 01:37:54,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404512692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:54,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:54,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:37:54,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792749368] [2022-11-03 01:37:54,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:54,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:37:54,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:54,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:37:54,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:37:54,955 INFO L87 Difference]: Start difference. First operand 192 states and 213 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:37:55,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:55,128 INFO L93 Difference]: Finished difference Result 190 states and 211 transitions. [2022-11-03 01:37:55,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:37:55,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-03 01:37:55,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:55,130 INFO L225 Difference]: With dead ends: 190 [2022-11-03 01:37:55,130 INFO L226 Difference]: Without dead ends: 190 [2022-11-03 01:37:55,130 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 01:37:55,131 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 13 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:55,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 288 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:37:55,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-03 01:37:55,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-11-03 01:37:55,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 89 states have (on average 2.0786516853932584) internal successors, (185), 177 states have internal predecessors, (185), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 01:37:55,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 211 transitions. [2022-11-03 01:37:55,144 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 211 transitions. Word has length 4 [2022-11-03 01:37:55,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:55,145 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 211 transitions. [2022-11-03 01:37:55,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:37:55,145 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 211 transitions. [2022-11-03 01:37:55,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 01:37:55,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:55,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 01:37:55,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:37:55,146 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting chain_nodeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:37:55,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:55,147 INFO L85 PathProgramCache]: Analyzing trace with hash 16812539, now seen corresponding path program 1 times [2022-11-03 01:37:55,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:55,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337621692] [2022-11-03 01:37:55,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:55,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:55,333 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 01:37:55,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:55,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337621692] [2022-11-03 01:37:55,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337621692] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:55,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:55,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:37:55,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685732810] [2022-11-03 01:37:55,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:55,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:37:55,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:55,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:37:55,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:37:55,339 INFO L87 Difference]: Start difference. First operand 190 states and 211 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:37:55,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:55,516 INFO L93 Difference]: Finished difference Result 188 states and 209 transitions. [2022-11-03 01:37:55,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:37:55,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-03 01:37:55,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:55,518 INFO L225 Difference]: With dead ends: 188 [2022-11-03 01:37:55,519 INFO L226 Difference]: Without dead ends: 188 [2022-11-03 01:37:55,519 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 01:37:55,530 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 11 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:55,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 291 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:37:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-11-03 01:37:55,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2022-11-03 01:37:55,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 89 states have (on average 2.056179775280899) internal successors, (183), 175 states have internal predecessors, (183), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 01:37:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 209 transitions. [2022-11-03 01:37:55,547 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 209 transitions. Word has length 4 [2022-11-03 01:37:55,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:55,547 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 209 transitions. [2022-11-03 01:37:55,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:37:55,548 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 209 transitions. [2022-11-03 01:37:55,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 01:37:55,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:55,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 01:37:55,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:37:55,549 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting chain_nodeErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:37:55,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:55,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1023004566, now seen corresponding path program 1 times [2022-11-03 01:37:55,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:55,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538958244] [2022-11-03 01:37:55,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:55,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:55,779 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 01:37:55,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:55,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538958244] [2022-11-03 01:37:55,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538958244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:55,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:55,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:37:55,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988746676] [2022-11-03 01:37:55,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:55,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:37:55,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:55,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:37:55,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:37:55,782 INFO L87 Difference]: Start difference. First operand 188 states and 209 transitions. Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:37:56,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:56,118 INFO L93 Difference]: Finished difference Result 183 states and 204 transitions. [2022-11-03 01:37:56,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:37:56,118 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-03 01:37:56,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:56,119 INFO L225 Difference]: With dead ends: 183 [2022-11-03 01:37:56,120 INFO L226 Difference]: Without dead ends: 183 [2022-11-03 01:37:56,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:37:56,128 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 38 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:56,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 578 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:37:56,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-03 01:37:56,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-11-03 01:37:56,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 89 states have (on average 2.0) internal successors, (178), 170 states have internal predecessors, (178), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 01:37:56,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 204 transitions. [2022-11-03 01:37:56,147 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 204 transitions. Word has length 6 [2022-11-03 01:37:56,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:56,148 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 204 transitions. [2022-11-03 01:37:56,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:37:56,148 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 204 transitions. [2022-11-03 01:37:56,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 01:37:56,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:56,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 01:37:56,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:37:56,150 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting chain_nodeErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:37:56,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:56,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1023004565, now seen corresponding path program 1 times [2022-11-03 01:37:56,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:56,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137576352] [2022-11-03 01:37:56,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:56,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:56,432 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 01:37:56,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:56,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137576352] [2022-11-03 01:37:56,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137576352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:56,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:56,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:37:56,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252012086] [2022-11-03 01:37:56,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:56,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:37:56,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:56,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:37:56,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:37:56,435 INFO L87 Difference]: Start difference. First operand 183 states and 204 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:37:56,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:56,777 INFO L93 Difference]: Finished difference Result 178 states and 199 transitions. [2022-11-03 01:37:56,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:37:56,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-03 01:37:56,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:56,785 INFO L225 Difference]: With dead ends: 178 [2022-11-03 01:37:56,785 INFO L226 Difference]: Without dead ends: 178 [2022-11-03 01:37:56,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:37:56,786 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 29 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:56,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 408 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:37:56,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-03 01:37:56,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-11-03 01:37:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 89 states have (on average 1.9438202247191012) internal successors, (173), 165 states have internal predecessors, (173), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 01:37:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 199 transitions. [2022-11-03 01:37:56,807 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 199 transitions. Word has length 6 [2022-11-03 01:37:56,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:56,807 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 199 transitions. [2022-11-03 01:37:56,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:37:56,808 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 199 transitions. [2022-11-03 01:37:56,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 01:37:56,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:56,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:56,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:37:56,811 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting chain_nodeErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:37:56,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:56,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1648370340, now seen corresponding path program 1 times [2022-11-03 01:37:56,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:56,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923327798] [2022-11-03 01:37:56,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:56,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:56,899 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 01:37:56,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:56,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923327798] [2022-11-03 01:37:56,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923327798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:56,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:56,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:37:56,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869667752] [2022-11-03 01:37:56,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:56,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:37:56,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:56,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:37:56,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:37:56,903 INFO L87 Difference]: Start difference. First operand 178 states and 199 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:37:57,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:57,073 INFO L93 Difference]: Finished difference Result 177 states and 198 transitions. [2022-11-03 01:37:57,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:37:57,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 01:37:57,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:57,075 INFO L225 Difference]: With dead ends: 177 [2022-11-03 01:37:57,075 INFO L226 Difference]: Without dead ends: 177 [2022-11-03 01:37:57,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:37:57,076 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 8 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:57,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 386 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:37:57,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-03 01:37:57,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-11-03 01:37:57,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 89 states have (on average 1.9325842696629214) internal successors, (172), 164 states have internal predecessors, (172), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 01:37:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 198 transitions. [2022-11-03 01:37:57,081 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 198 transitions. Word has length 7 [2022-11-03 01:37:57,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:57,082 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 198 transitions. [2022-11-03 01:37:57,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:37:57,082 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 198 transitions. [2022-11-03 01:37:57,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 01:37:57,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:57,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:57,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:37:57,083 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting chain_nodeErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:37:57,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:57,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1648370339, now seen corresponding path program 1 times [2022-11-03 01:37:57,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:57,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610155439] [2022-11-03 01:37:57,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:57,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:57,177 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 01:37:57,177 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:57,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610155439] [2022-11-03 01:37:57,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610155439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:57,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:57,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:37:57,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645943656] [2022-11-03 01:37:57,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:57,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:37:57,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:57,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:37:57,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:37:57,180 INFO L87 Difference]: Start difference. First operand 177 states and 198 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:37:57,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:57,371 INFO L93 Difference]: Finished difference Result 176 states and 197 transitions. [2022-11-03 01:37:57,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:37:57,371 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 01:37:57,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:57,372 INFO L225 Difference]: With dead ends: 176 [2022-11-03 01:37:57,372 INFO L226 Difference]: Without dead ends: 176 [2022-11-03 01:37:57,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:37:57,373 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 6 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:57,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 392 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:37:57,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-03 01:37:57,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-11-03 01:37:57,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 89 states have (on average 1.9213483146067416) internal successors, (171), 163 states have internal predecessors, (171), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 01:37:57,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 197 transitions. [2022-11-03 01:37:57,378 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 197 transitions. Word has length 7 [2022-11-03 01:37:57,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:57,379 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 197 transitions. [2022-11-03 01:37:57,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:37:57,379 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 197 transitions. [2022-11-03 01:37:57,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 01:37:57,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:57,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:57,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:37:57,380 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:37:57,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:57,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1889969027, now seen corresponding path program 1 times [2022-11-03 01:37:57,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:57,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697661514] [2022-11-03 01:37:57,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:57,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:57,599 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 01:37:57,600 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:57,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697661514] [2022-11-03 01:37:57,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697661514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:57,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:57,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:37:57,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229049685] [2022-11-03 01:37:57,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:57,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:37:57,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:57,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:37:57,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:37:57,603 INFO L87 Difference]: Start difference. First operand 176 states and 197 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:37:58,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:58,010 INFO L93 Difference]: Finished difference Result 175 states and 196 transitions. [2022-11-03 01:37:58,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:37:58,011 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-03 01:37:58,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:58,012 INFO L225 Difference]: With dead ends: 175 [2022-11-03 01:37:58,012 INFO L226 Difference]: Without dead ends: 175 [2022-11-03 01:37:58,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:37:58,013 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 150 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:58,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 329 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:37:58,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-03 01:37:58,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-11-03 01:37:58,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 89 states have (on average 1.9101123595505618) internal successors, (170), 162 states have internal predecessors, (170), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 01:37:58,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 196 transitions. [2022-11-03 01:37:58,019 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 196 transitions. Word has length 13 [2022-11-03 01:37:58,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:58,020 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 196 transitions. [2022-11-03 01:37:58,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:37:58,021 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 196 transitions. [2022-11-03 01:37:58,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 01:37:58,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:58,021 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:58,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:37:58,022 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:37:58,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:58,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1889969028, now seen corresponding path program 1 times [2022-11-03 01:37:58,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:58,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312050901] [2022-11-03 01:37:58,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:58,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:58,322 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 01:37:58,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:58,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312050901] [2022-11-03 01:37:58,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312050901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:58,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:58,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 01:37:58,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826507390] [2022-11-03 01:37:58,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:58,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:37:58,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:58,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:37:58,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:37:58,326 INFO L87 Difference]: Start difference. First operand 175 states and 196 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:37:58,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:58,721 INFO L93 Difference]: Finished difference Result 175 states and 197 transitions. [2022-11-03 01:37:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:37:58,722 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-03 01:37:58,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:58,724 INFO L225 Difference]: With dead ends: 175 [2022-11-03 01:37:58,724 INFO L226 Difference]: Without dead ends: 175 [2022-11-03 01:37:58,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:37:58,725 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 201 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:58,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 230 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:37:58,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-03 01:37:58,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2022-11-03 01:37:58,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 89 states have (on average 1.898876404494382) internal successors, (169), 161 states have internal predecessors, (169), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 01:37:58,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 195 transitions. [2022-11-03 01:37:58,731 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 195 transitions. Word has length 13 [2022-11-03 01:37:58,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:58,731 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 195 transitions. [2022-11-03 01:37:58,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:37:58,732 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 195 transitions. [2022-11-03 01:37:58,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 01:37:58,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:58,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:58,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 01:37:58,733 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:37:58,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:58,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1074212787, now seen corresponding path program 1 times [2022-11-03 01:37:58,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:58,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146596142] [2022-11-03 01:37:58,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:58,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:59,107 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 01:37:59,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:59,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146596142] [2022-11-03 01:37:59,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146596142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:59,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:37:59,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:37:59,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612227661] [2022-11-03 01:37:59,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:59,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 01:37:59,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:59,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 01:37:59,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:37:59,109 INFO L87 Difference]: Start difference. First operand 174 states and 195 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:37:59,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:59,524 INFO L93 Difference]: Finished difference Result 173 states and 194 transitions. [2022-11-03 01:37:59,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:37:59,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-03 01:37:59,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:59,525 INFO L225 Difference]: With dead ends: 173 [2022-11-03 01:37:59,525 INFO L226 Difference]: Without dead ends: 173 [2022-11-03 01:37:59,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:37:59,526 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 102 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:59,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 383 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:37:59,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-03 01:37:59,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-11-03 01:37:59,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 89 states have (on average 1.8876404494382022) internal successors, (168), 160 states have internal predecessors, (168), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 01:37:59,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 194 transitions. [2022-11-03 01:37:59,531 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 194 transitions. Word has length 17 [2022-11-03 01:37:59,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:59,532 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 194 transitions. [2022-11-03 01:37:59,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:37:59,532 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 194 transitions. [2022-11-03 01:37:59,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 01:37:59,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:59,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:59,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 01:37:59,535 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:37:59,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:59,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1074212786, now seen corresponding path program 1 times [2022-11-03 01:37:59,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:59,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235575030] [2022-11-03 01:37:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:59,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:38:00,230 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 01:38:00,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:38:00,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235575030] [2022-11-03 01:38:00,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235575030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:38:00,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:38:00,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:38:00,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021622345] [2022-11-03 01:38:00,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:38:00,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:38:00,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:38:00,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:38:00,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:38:00,233 INFO L87 Difference]: Start difference. First operand 173 states and 194 transitions. Second operand has 8 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:38:00,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:38:00,650 INFO L93 Difference]: Finished difference Result 185 states and 212 transitions. [2022-11-03 01:38:00,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:38:00,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-03 01:38:00,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:38:00,652 INFO L225 Difference]: With dead ends: 185 [2022-11-03 01:38:00,652 INFO L226 Difference]: Without dead ends: 185 [2022-11-03 01:38:00,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:38:00,653 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 87 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:38:00,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 284 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:38:00,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-03 01:38:00,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 182. [2022-11-03 01:38:00,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 97 states have (on average 1.8350515463917525) internal successors, (178), 168 states have internal predecessors, (178), 18 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:38:00,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 206 transitions. [2022-11-03 01:38:00,660 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 206 transitions. Word has length 17 [2022-11-03 01:38:00,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:38:00,660 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 206 transitions. [2022-11-03 01:38:00,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:38:00,660 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 206 transitions. [2022-11-03 01:38:00,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 01:38:00,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:38:00,661 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:38:00,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 01:38:00,662 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:38:00,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:38:00,662 INFO L85 PathProgramCache]: Analyzing trace with hash -908910069, now seen corresponding path program 1 times [2022-11-03 01:38:00,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:38:00,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431176724] [2022-11-03 01:38:00,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:38:00,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:38:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:38:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:38:01,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:38:01,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431176724] [2022-11-03 01:38:01,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431176724] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:38:01,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671158287] [2022-11-03 01:38:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:38:01,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:38:01,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:38:01,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:38:01,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:38:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:38:01,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 01:38:01,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:38:01,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:01,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:01,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:01,756 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-03 01:38:01,767 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 01:38:01,767 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 23 treesize of output 19 [2022-11-03 01:38:01,803 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 01:38:02,020 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 01:38:02,161 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-03 01:38:02,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:38:04,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671158287] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:38:04,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [517773160] [2022-11-03 01:38:04,355 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-11-03 01:38:04,355 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:38:04,360 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:38:04,365 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:38:04,365 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:38:04,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,441 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 01:38:04,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,546 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 01:38:04,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 01:38:04,576 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 01:38:04,581 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 01:38:04,591 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 01:38:04,597 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 01:38:04,603 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 01:38:04,618 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 19 treesize of output 1 [2022-11-03 01:38:04,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,628 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 21 treesize of output 20 [2022-11-03 01:38:04,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,639 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 21 treesize of output 20 [2022-11-03 01:38:04,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,697 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 01:38:04,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 01:38:04,711 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 15 treesize of output 1 [2022-11-03 01:38:04,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,753 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 01:38:04,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 01:38:04,784 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 15 treesize of output 1 [2022-11-03 01:38:04,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,872 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 01:38:04,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 01:38:04,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:04,944 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 01:38:04,945 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 01:38:05,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,048 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 01:38:05,061 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 7 treesize of output 3 [2022-11-03 01:38:05,071 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 7 treesize of output 3 [2022-11-03 01:38:05,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,165 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 01:38:05,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 01:38:05,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 01:38:05,240 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 7 treesize of output 3 [2022-11-03 01:38:05,252 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 7 treesize of output 3 [2022-11-03 01:38:05,351 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-03 01:38:05,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,365 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 15 treesize of output 15 [2022-11-03 01:38:05,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,381 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 15 treesize of output 15 [2022-11-03 01:38:05,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,522 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 01:38:05,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 01:38:05,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-03 01:38:05,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,586 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-03 01:38:05,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,599 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:38:05,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,613 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:38:05,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,697 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 01:38:05,697 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 01:38:05,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-03 01:38:05,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 01:38:05,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,774 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:38:05,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:05,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2022-11-03 01:38:06,040 INFO L356 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-03 01:38:06,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 259 treesize of output 248 [2022-11-03 01:38:06,465 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 01:38:06,468 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 01:38:06,634 INFO L356 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-03 01:38:06,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 259 treesize of output 248 [2022-11-03 01:38:07,095 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 01:38:07,098 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 01:38:07,298 INFO L356 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-03 01:38:07,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 259 treesize of output 248 [2022-11-03 01:38:07,716 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 01:38:07,718 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 01:38:07,720 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 01:38:07,920 INFO L356 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-03 01:38:07,921 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 259 treesize of output 248 [2022-11-03 01:38:08,299 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 01:38:08,304 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 01:38:08,584 INFO L356 Elim1Store]: treesize reduction 84, result has 13.4 percent of original size [2022-11-03 01:38:08,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 259 treesize of output 248 [2022-11-03 01:38:08,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:08,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:08,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:08,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:08,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:08,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:08,968 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 01:38:08,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 01:38:08,985 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 12 for LOIs [2022-11-03 01:38:08,995 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 01:38:09,000 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 01:38:09,012 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 01:38:09,019 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 01:38:09,026 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 15 treesize of output 1 [2022-11-03 01:38:09,039 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 19 treesize of output 1 [2022-11-03 01:38:09,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:09,047 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 21 treesize of output 20 [2022-11-03 01:38:09,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:09,057 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 21 treesize of output 20 [2022-11-03 01:38:09,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:09,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:38:09,103 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 01:38:09,104 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 01:38:09,115 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 15 treesize of output 1 [2022-11-03 01:38:09,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:09,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:38:09,146 INFO L356 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2022-11-03 01:38:09,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 38 [2022-11-03 01:38:09,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:09,174 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:38:09,188 INFO L356 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2022-11-03 01:38:09,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 42 [2022-11-03 01:38:09,201 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 15 treesize of output 1 [2022-11-03 01:38:09,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:09,214 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:38:09,225 INFO L356 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-03 01:38:09,225 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 38 [2022-11-03 01:38:09,232 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:38:12,193 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4352#(and (<= 0 |ULTIMATE.start_create_sll_~#list~0#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp1#1.offset|) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp1#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_create_sll_~#list~0#1.base|) |ULTIMATE.start_create_sll_~#list~0#1.offset|) |ULTIMATE.start_create_sll_#t~mem9#1.offset|) (<= |ULTIMATE.start_create_sll_#in~pp1#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#p2~0#1.base|) (= |ULTIMATE.start_main_~#p1~0#1.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp2#1.base|) (= |ULTIMATE.start_main_~#p2~0#1.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp2#1.offset|) (< (select |#length| |ULTIMATE.start_create_sll_~pp1#1.base|) (+ |ULTIMATE.start_create_sll_~pp1#1.offset| 4)) (= |ULTIMATE.start_create_sll_~#list~0#1.offset| 0) (<= |ULTIMATE.start_create_sll_~pp1#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#p1~0#1.base|) (= (select |#valid| |ULTIMATE.start_create_sll_~#list~0#1.base|) 1) (= |#NULL.offset| 0) (<= |ULTIMATE.start_create_sll_#in~pp2#1.offset| 0) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.base|) (<= 0 |ULTIMATE.start_create_sll_#in~pp1#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_create_sll_~#list~0#1.base|) |ULTIMATE.start_create_sll_~#list~0#1.offset|) |ULTIMATE.start_create_sll_#t~mem9#1.base|) (<= 0 |ULTIMATE.start_create_sll_~pp2#1.offset|) (<= 0 |#StackHeapBarrier|) (<= (+ |ULTIMATE.start_create_sll_~#list~0#1.offset| 4) (select |#length| |ULTIMATE.start_create_sll_~#list~0#1.base|)) (<= |ULTIMATE.start_create_sll_~pp2#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-03 01:38:12,193 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:38:12,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:38:12,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 10 [2022-11-03 01:38:12,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787411477] [2022-11-03 01:38:12,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:38:12,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 01:38:12,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:38:12,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 01:38:12,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2022-11-03 01:38:12,195 INFO L87 Difference]: Start difference. First operand 182 states and 206 transitions. Second operand has 12 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:38:12,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:38:12,871 INFO L93 Difference]: Finished difference Result 181 states and 205 transitions. [2022-11-03 01:38:12,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:38:12,871 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2022-11-03 01:38:12,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:38:12,872 INFO L225 Difference]: With dead ends: 181 [2022-11-03 01:38:12,873 INFO L226 Difference]: Without dead ends: 181 [2022-11-03 01:38:12,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=109, Invalid=761, Unknown=0, NotChecked=0, Total=870 [2022-11-03 01:38:12,874 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 318 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 01:38:12,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 162 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 01:38:12,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-03 01:38:12,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 172. [2022-11-03 01:38:12,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 89 states have (on average 1.8764044943820224) internal successors, (167), 159 states have internal predecessors, (167), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 01:38:12,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 193 transitions. [2022-11-03 01:38:12,881 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 193 transitions. Word has length 27 [2022-11-03 01:38:12,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:38:12,882 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 193 transitions. [2022-11-03 01:38:12,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 01:38:12,882 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 193 transitions. [2022-11-03 01:38:12,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 01:38:12,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:38:12,883 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:38:12,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:38:13,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:38:13,098 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:38:13,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:38:13,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1672508004, now seen corresponding path program 1 times [2022-11-03 01:38:13,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:38:13,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231507805] [2022-11-03 01:38:13,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:38:13,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:38:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:38:13,476 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:38:13,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:38:13,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231507805] [2022-11-03 01:38:13,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231507805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:38:13,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:38:13,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:38:13,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477598225] [2022-11-03 01:38:13,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:38:13,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:38:13,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:38:13,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:38:13,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:38:13,478 INFO L87 Difference]: Start difference. First operand 172 states and 193 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:38:13,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:38:13,955 INFO L93 Difference]: Finished difference Result 175 states and 197 transitions. [2022-11-03 01:38:13,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:38:13,956 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-11-03 01:38:13,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:38:13,957 INFO L225 Difference]: With dead ends: 175 [2022-11-03 01:38:13,957 INFO L226 Difference]: Without dead ends: 175 [2022-11-03 01:38:13,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:38:13,958 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 206 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:38:13,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 297 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:38:13,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-03 01:38:13,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 165. [2022-11-03 01:38:13,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 89 states have (on average 1.797752808988764) internal successors, (160), 152 states have internal predecessors, (160), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 01:38:13,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 186 transitions. [2022-11-03 01:38:13,964 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 186 transitions. Word has length 30 [2022-11-03 01:38:13,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:38:13,964 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 186 transitions. [2022-11-03 01:38:13,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:38:13,965 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 186 transitions. [2022-11-03 01:38:13,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 01:38:13,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:38:13,966 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:38:13,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 01:38:13,966 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:38:13,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:38:13,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1672508005, now seen corresponding path program 1 times [2022-11-03 01:38:13,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:38:13,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097356261] [2022-11-03 01:38:13,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:38:13,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:38:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:38:14,264 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:38:14,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:38:14,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097356261] [2022-11-03 01:38:14,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097356261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:38:14,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:38:14,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:38:14,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034236309] [2022-11-03 01:38:14,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:38:14,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:38:14,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:38:14,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:38:14,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:38:14,267 INFO L87 Difference]: Start difference. First operand 165 states and 186 transitions. Second operand has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:38:14,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:38:14,840 INFO L93 Difference]: Finished difference Result 187 states and 217 transitions. [2022-11-03 01:38:14,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:38:14,840 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-11-03 01:38:14,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:38:14,841 INFO L225 Difference]: With dead ends: 187 [2022-11-03 01:38:14,842 INFO L226 Difference]: Without dead ends: 187 [2022-11-03 01:38:14,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:38:14,842 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 363 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:38:14,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 214 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 01:38:14,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-03 01:38:14,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 165. [2022-11-03 01:38:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 94 states have (on average 1.702127659574468) internal successors, (160), 151 states have internal predecessors, (160), 18 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:38:14,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 188 transitions. [2022-11-03 01:38:14,847 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 188 transitions. Word has length 30 [2022-11-03 01:38:14,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:38:14,848 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 188 transitions. [2022-11-03 01:38:14,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:38:14,848 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 188 transitions. [2022-11-03 01:38:14,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 01:38:14,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:38:14,849 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:38:14,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 01:38:14,851 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:38:14,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:38:14,851 INFO L85 PathProgramCache]: Analyzing trace with hash 308140793, now seen corresponding path program 1 times [2022-11-03 01:38:14,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:38:14,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744889866] [2022-11-03 01:38:14,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:38:14,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:38:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:38:15,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:38:15,182 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:38:15,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744889866] [2022-11-03 01:38:15,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744889866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:38:15,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:38:15,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:38:15,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169555673] [2022-11-03 01:38:15,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:38:15,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:38:15,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:38:15,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:38:15,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:38:15,187 INFO L87 Difference]: Start difference. First operand 165 states and 188 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:38:15,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:38:15,646 INFO L93 Difference]: Finished difference Result 168 states and 192 transitions. [2022-11-03 01:38:15,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:38:15,646 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-11-03 01:38:15,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:38:15,647 INFO L225 Difference]: With dead ends: 168 [2022-11-03 01:38:15,647 INFO L226 Difference]: Without dead ends: 168 [2022-11-03 01:38:15,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:38:15,648 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 149 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:38:15,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 267 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:38:15,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-03 01:38:15,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 158. [2022-11-03 01:38:15,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 94 states have (on average 1.627659574468085) internal successors, (153), 144 states have internal predecessors, (153), 18 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-03 01:38:15,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 181 transitions. [2022-11-03 01:38:15,653 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 181 transitions. Word has length 31 [2022-11-03 01:38:15,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:38:15,653 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 181 transitions. [2022-11-03 01:38:15,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:38:15,657 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 181 transitions. [2022-11-03 01:38:15,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 01:38:15,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:38:15,658 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:38:15,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 01:38:15,659 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:38:15,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:38:15,659 INFO L85 PathProgramCache]: Analyzing trace with hash 308140794, now seen corresponding path program 1 times [2022-11-03 01:38:15,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:38:15,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437449784] [2022-11-03 01:38:15,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:38:15,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:38:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:38:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:38:16,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:38:16,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437449784] [2022-11-03 01:38:16,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437449784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:38:16,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:38:16,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:38:16,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293456899] [2022-11-03 01:38:16,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:38:16,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:38:16,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:38:16,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:38:16,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:38:16,090 INFO L87 Difference]: Start difference. First operand 158 states and 181 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:38:16,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:38:16,569 INFO L93 Difference]: Finished difference Result 187 states and 222 transitions. [2022-11-03 01:38:16,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 01:38:16,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2022-11-03 01:38:16,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:38:16,574 INFO L225 Difference]: With dead ends: 187 [2022-11-03 01:38:16,574 INFO L226 Difference]: Without dead ends: 187 [2022-11-03 01:38:16,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-03 01:38:16,576 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 377 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 01:38:16,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 148 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 01:38:16,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-03 01:38:16,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 163. [2022-11-03 01:38:16,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 104 states have (on average 1.5288461538461537) internal successors, (159), 147 states have internal predecessors, (159), 19 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 01:38:16,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 189 transitions. [2022-11-03 01:38:16,587 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 189 transitions. Word has length 31 [2022-11-03 01:38:16,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:38:16,588 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 189 transitions. [2022-11-03 01:38:16,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:38:16,588 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 189 transitions. [2022-11-03 01:38:16,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-03 01:38:16,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:38:16,598 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:38:16,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 01:38:16,599 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:38:16,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:38:16,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1565693152, now seen corresponding path program 1 times [2022-11-03 01:38:16,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:38:16,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892343392] [2022-11-03 01:38:16,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:38:16,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:38:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:38:18,048 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:38:18,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:38:18,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892343392] [2022-11-03 01:38:18,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892343392] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:38:18,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655070705] [2022-11-03 01:38:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:38:18,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:38:18,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:38:18,050 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:38:18,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:38:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:38:18,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-03 01:38:18,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:38:18,364 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 01:38:18,519 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:38:18,520 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 01:38:18,531 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 01:38:18,750 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 01:38:18,750 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2022-11-03 01:38:18,814 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 01:38:18,814 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2022-11-03 01:38:19,067 WARN L855 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_874 (Array Int Int)) (v_ArrVal_873 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_873) |c_chain_node_#in~ppnode#1.base| v_ArrVal_874) |c_#memory_$Pointer$.base|))) is different from true [2022-11-03 01:38:19,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,113 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-03 01:38:19,113 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 3 case distinctions, treesize of input 33 treesize of output 49 [2022-11-03 01:38:19,126 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 01:38:19,195 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 5 [2022-11-03 01:38:19,286 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 28 treesize of output 20 [2022-11-03 01:38:19,367 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-03 01:38:19,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:38:19,485 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-03 01:38:19,486 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 19 treesize of output 15 [2022-11-03 01:38:19,590 WARN L833 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_main_~#p2~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|) (= |c_ULTIMATE.start_main_~#p1~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|) (forall ((|v_chain_node_~node~0#1.base_19| Int) (v_ArrVal_885 (Array Int Int)) (v_ArrVal_884 (Array Int Int))) (or (not (= (select (select (store (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_19| v_ArrVal_885) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_ArrVal_884) |c_ULTIMATE.start_main_~#p1~0#1.base|) |c_ULTIMATE.start_main_~#p1~0#1.offset|) 0)) (not (< |v_chain_node_~node~0#1.base_19| |c_#StackHeapBarrier|))))) is different from false [2022-11-03 01:38:19,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655070705] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:38:19,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [702634170] [2022-11-03 01:38:19,599 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-11-03 01:38:19,600 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:38:19,600 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:38:19,600 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:38:19,600 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:38:19,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 01:38:19,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,750 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 01:38:19,751 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 01:38:19,773 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 01:38:19,778 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 01:38:19,785 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 01:38:19,790 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 15 treesize of output 1 [2022-11-03 01:38:19,795 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 01:38:19,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,813 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 21 treesize of output 20 [2022-11-03 01:38:19,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,822 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 21 treesize of output 20 [2022-11-03 01:38:19,829 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 19 treesize of output 1 [2022-11-03 01:38:19,844 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 15 treesize of output 1 [2022-11-03 01:38:19,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,882 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 01:38:19,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 01:38:19,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,926 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 01:38:19,927 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 01:38:19,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:19,982 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 01:38:19,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 01:38:20,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,072 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 01:38:20,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 01:38:20,117 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 15 treesize of output 1 [2022-11-03 01:38:20,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 01:38:20,177 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 7 treesize of output 3 [2022-11-03 01:38:20,188 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 7 treesize of output 3 [2022-11-03 01:38:20,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,265 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 01:38:20,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 01:38:20,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 01:38:20,327 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 7 treesize of output 3 [2022-11-03 01:38:20,339 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 7 treesize of output 3 [2022-11-03 01:38:20,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,413 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 15 treesize of output 15 [2022-11-03 01:38:20,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,425 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 15 treesize of output 15 [2022-11-03 01:38:20,442 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 15 treesize of output 1 [2022-11-03 01:38:20,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,530 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 27 treesize of output 25 [2022-11-03 01:38:20,548 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 15 treesize of output 1 [2022-11-03 01:38:20,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,569 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 27 treesize of output 25 [2022-11-03 01:38:20,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,671 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 01:38:20,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 01:38:20,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-03 01:38:20,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,756 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-03 01:38:20,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-03 01:38:20,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,793 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-03 01:38:20,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,863 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 01:38:20,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 01:38:20,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-03 01:38:20,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-03 01:38:20,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:20,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-03 01:38:20,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-03 01:38:21,107 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 01:38:21,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,295 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-03 01:38:21,296 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-03 01:38:21,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,385 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 01:38:21,386 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 01:38:21,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:38:21,468 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 01:38:21,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 01:38:21,501 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 140 for LOIs [2022-11-03 01:38:22,491 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-03 01:38:22,544 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 60 for LOIs [2022-11-03 01:38:22,558 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:38:34,379 WARN L234 SmtUtils]: Spent 8.57s on a formula simplification. DAG size of input: 191 DAG size of output: 179 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:38:43,046 WARN L234 SmtUtils]: Spent 8.36s on a formula simplification. DAG size of input: 205 DAG size of output: 188 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:38:52,981 WARN L234 SmtUtils]: Spent 9.53s on a formula simplification. DAG size of input: 221 DAG size of output: 194 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:39:04,804 WARN L234 SmtUtils]: Spent 11.26s on a formula simplification. DAG size of input: 235 DAG size of output: 210 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:39:10,363 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6313#(and (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_33| Int)) (and (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_33|) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_33|) (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_33|)) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_33|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_33|) 0) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_33| 0)))) (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_16| Int)) (and (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_18|) 1) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_18|) 0) 0) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_16|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_18|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_16| 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_18| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_16| 2)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_18| 0)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_16|) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_18|) 0) 0) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_16|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_18| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_16|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_16|) 1) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_18|) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_18|)))) (= |#NULL.offset| 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 01:39:10,363 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:39:10,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:39:10,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 35 [2022-11-03 01:39:10,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109976014] [2022-11-03 01:39:10,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:39:10,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-03 01:39:10,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:39:10,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-03 01:39:10,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=3182, Unknown=14, NotChecked=230, Total=3660 [2022-11-03 01:39:10,366 INFO L87 Difference]: Start difference. First operand 163 states and 189 transitions. Second operand has 35 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 31 states have internal predecessors, (51), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:39:12,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:39:12,386 INFO L93 Difference]: Finished difference Result 187 states and 219 transitions. [2022-11-03 01:39:12,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 01:39:12,387 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 31 states have internal predecessors, (51), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2022-11-03 01:39:12,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:39:12,388 INFO L225 Difference]: With dead ends: 187 [2022-11-03 01:39:12,388 INFO L226 Difference]: Without dead ends: 187 [2022-11-03 01:39:12,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1348 ImplicationChecksByTransitivity, 49.7s TimeCoverageRelationStatistics Valid=357, Invalid=4742, Unknown=21, NotChecked=282, Total=5402 [2022-11-03 01:39:12,391 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 161 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 659 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:39:12,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1348 Invalid, 2231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1505 Invalid, 0 Unknown, 659 Unchecked, 1.1s Time] [2022-11-03 01:39:12,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-03 01:39:12,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 175. [2022-11-03 01:39:12,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 114 states have (on average 1.543859649122807) internal successors, (176), 158 states have internal predecessors, (176), 20 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:39:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 208 transitions. [2022-11-03 01:39:12,398 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 208 transitions. Word has length 36 [2022-11-03 01:39:12,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:39:12,398 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 208 transitions. [2022-11-03 01:39:12,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 27 states have (on average 1.8888888888888888) internal successors, (51), 31 states have internal predecessors, (51), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:39:12,399 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 208 transitions. [2022-11-03 01:39:12,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 01:39:12,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:39:12,400 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:39:12,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:39:12,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 01:39:12,614 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:39:12,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:39:12,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1403489686, now seen corresponding path program 1 times [2022-11-03 01:39:12,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:39:12,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099075366] [2022-11-03 01:39:12,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:12,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:39:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:39:15,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:39:15,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099075366] [2022-11-03 01:39:15,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099075366] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:39:15,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977664148] [2022-11-03 01:39:15,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:39:15,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:39:15,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:39:15,652 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:39:15,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:39:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:39:15,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-03 01:39:15,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:39:16,012 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 01:39:16,260 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 01:39:16,260 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 24 treesize of output 19 [2022-11-03 01:39:16,481 INFO L356 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-03 01:39:16,482 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 3 case distinctions, treesize of input 35 treesize of output 29 [2022-11-03 01:39:16,582 INFO L356 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-03 01:39:16,583 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 11 [2022-11-03 01:39:16,965 WARN L855 $PredicateComparison]: unable to prove that (exists ((|chain_node_~node~0#1.base| Int) (v_ArrVal_1043 (Array Int Int)) (v_ArrVal_1042 (Array Int Int))) (and (< |chain_node_~node~0#1.base| |c_#StackHeapBarrier|) (= |c_#memory_$Pointer$.base| (store (store |c_old(#memory_$Pointer$.base)| |chain_node_~node~0#1.base| v_ArrVal_1042) |c_chain_node_#in~ppnode#1.base| v_ArrVal_1043)))) is different from true [2022-11-03 01:39:16,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,051 INFO L356 Elim1Store]: treesize reduction 51, result has 48.0 percent of original size [2022-11-03 01:39:17,051 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 72 [2022-11-03 01:39:17,082 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 21 treesize of output 15 [2022-11-03 01:39:17,094 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 01:39:17,176 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 5 [2022-11-03 01:39:17,282 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 01:39:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-03 01:39:17,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:39:17,474 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 10 treesize of output 8 [2022-11-03 01:39:17,609 WARN L833 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_main_~#p2~0#1.base| |c_ULTIMATE.start_create_sll_~#list~0#1.base|) (forall ((|v_chain_node_~node~0#1.base_22| Int) (v_ArrVal_1054 (Array Int Int)) (v_ArrVal_1053 (Array Int Int))) (or (not (< |v_chain_node_~node~0#1.base_22| |c_#StackHeapBarrier|)) (not (= (select (select (store (store |c_#memory_$Pointer$.base| |v_chain_node_~node~0#1.base_22| v_ArrVal_1054) |c_ULTIMATE.start_create_sll_~#list~0#1.base| v_ArrVal_1053) |c_ULTIMATE.start_main_~#p2~0#1.base|) |c_ULTIMATE.start_main_~#p2~0#1.offset|) 0))))) is different from false [2022-11-03 01:39:17,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977664148] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:39:17,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1050086211] [2022-11-03 01:39:17,612 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-11-03 01:39:17,613 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:39:17,613 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:39:17,613 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:39:17,613 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:39:17,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,647 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-03 01:39:17,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,728 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 01:39:17,728 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 01:39:17,746 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 01:39:17,751 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 01:39:17,757 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 15 treesize of output 1 [2022-11-03 01:39:17,761 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 01:39:17,766 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 01:39:17,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,777 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 21 treesize of output 20 [2022-11-03 01:39:17,783 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 19 treesize of output 1 [2022-11-03 01:39:17,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,790 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 21 treesize of output 20 [2022-11-03 01:39:17,806 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 15 treesize of output 1 [2022-11-03 01:39:17,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,842 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 01:39:17,843 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 01:39:17,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,881 INFO L356 Elim1Store]: treesize reduction 38, result has 34.5 percent of original size [2022-11-03 01:39:17,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 42 [2022-11-03 01:39:17,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:17,939 INFO L356 Elim1Store]: treesize reduction 66, result has 32.0 percent of original size [2022-11-03 01:39:17,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 56 [2022-11-03 01:39:17,951 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 15 treesize of output 1 [2022-11-03 01:39:17,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,006 INFO L356 Elim1Store]: treesize reduction 48, result has 50.5 percent of original size [2022-11-03 01:39:18,007 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 74 [2022-11-03 01:39:18,064 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 7 treesize of output 3 [2022-11-03 01:39:18,075 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 7 treesize of output 3 [2022-11-03 01:39:18,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 01:39:18,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,164 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 01:39:18,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 01:39:18,206 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 7 treesize of output 3 [2022-11-03 01:39:18,227 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 7 treesize of output 3 [2022-11-03 01:39:18,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-03 01:39:18,332 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 15 treesize of output 1 [2022-11-03 01:39:18,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,344 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 15 treesize of output 15 [2022-11-03 01:39:18,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,362 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 15 treesize of output 15 [2022-11-03 01:39:18,437 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 15 treesize of output 1 [2022-11-03 01:39:18,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,456 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2022-11-03 01:39:18,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,474 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 27 treesize of output 25 [2022-11-03 01:39:18,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,554 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 01:39:18,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 01:39:18,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,606 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-03 01:39:18,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-03 01:39:18,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,634 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-03 01:39:18,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-03 01:39:18,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,725 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 01:39:18,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 01:39:18,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-03 01:39:18,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,789 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-03 01:39:18,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-03 01:39:18,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:18,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-11-03 01:39:18,904 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 01:39:19,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:19,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:19,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:19,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:19,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:19,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:19,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:19,092 INFO L356 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2022-11-03 01:39:19,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 35 [2022-11-03 01:39:19,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:19,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:19,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:19,183 INFO L356 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2022-11-03 01:39:19,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 43 [2022-11-03 01:39:19,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:19,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:19,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:19,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:19,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:19,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:39:19,280 INFO L356 Elim1Store]: treesize reduction 68, result has 13.9 percent of original size [2022-11-03 01:39:19,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 55 treesize of output 61 [2022-11-03 01:39:19,301 INFO L197 IcfgInterpreter]: Interpreting procedure chain_node with input of size 141 for LOIs [2022-11-03 01:39:20,253 INFO L197 IcfgInterpreter]: Interpreting procedure check_seq_next with input of size 70 for LOIs [2022-11-03 01:39:20,355 INFO L197 IcfgInterpreter]: Interpreting procedure fail with input of size 75 for LOIs [2022-11-03 01:39:20,384 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:39:32,727 WARN L234 SmtUtils]: Spent 8.40s on a formula simplification. DAG size of input: 192 DAG size of output: 178 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:39:41,568 WARN L234 SmtUtils]: Spent 8.44s on a formula simplification. DAG size of input: 206 DAG size of output: 186 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:39:51,648 WARN L234 SmtUtils]: Spent 9.52s on a formula simplification. DAG size of input: 222 DAG size of output: 195 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:40:03,905 WARN L234 SmtUtils]: Spent 11.51s on a formula simplification. DAG size of input: 236 DAG size of output: 209 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 01:40:10,352 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6923#(and (exists ((|v_ULTIMATE.start_create_sll_~#list~0#1.base_37| Int)) (and (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~#list~0#1.base_37|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~#list~0#1.base_37|) (not (= |v_ULTIMATE.start_create_sll_~#list~0#1.base_37| 0)) (not (= 2 |v_ULTIMATE.start_create_sll_~#list~0#1.base_37|)) (<= 0 |v_ULTIMATE.start_create_sll_~#list~0#1.base_37|) (= (select |#valid| |v_ULTIMATE.start_create_sll_~#list~0#1.base_37|) 0))) (= |#NULL.offset| 0) (or (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24| Int)) (and (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_25| Int)) (and (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_25|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_25|) 1) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_25|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_25| 2)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_25|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_25| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24|)) (not (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_25|) 0) 0)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_25| 0)))) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24|) 1) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24|) 0) 0) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24|) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24|) 0) 0) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24| 2)) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24| 0)))) (exists ((|v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24| Int)) (and (exists ((|v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_25| Int)) (and (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_25|)) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_25|) 1) (<= 0 |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_25|) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_25| 2)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_25|) (not (= 0 (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_25|) 0))) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_25| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24|)) (not (= |v_ULTIMATE.start_create_sll_~pp1#1.base_BEFORE_CALL_25| 0)))) (= (select |#valid| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24|) 1) (= (select (select |#memory_$Pointer$.offset| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24|) 0) 0) (<= 4 (select |#length| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24|)) (< |#StackHeapBarrier| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24|) (= (select (select |#memory_$Pointer$.base| |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24|) 0) 0) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24| 2)) (<= 0 |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24|) (not (= |v_ULTIMATE.start_create_sll_~pp2#1.base_BEFORE_CALL_24| 0))))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 01:40:10,352 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:40:10,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:40:10,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 43 [2022-11-03 01:40:10,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704328778] [2022-11-03 01:40:10,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-03 01:40:10,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-03 01:40:10,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:40:10,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-03 01:40:10,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=4274, Unknown=23, NotChecked=266, Total=4830 [2022-11-03 01:40:10,357 INFO L87 Difference]: Start difference. First operand 175 states and 208 transitions. Second operand has 43 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 38 states have internal predecessors, (61), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:40:15,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:40:15,125 INFO L93 Difference]: Finished difference Result 222 states and 262 transitions. [2022-11-03 01:40:15,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 01:40:15,126 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 38 states have internal predecessors, (61), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 38 [2022-11-03 01:40:15,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:40:15,127 INFO L225 Difference]: With dead ends: 222 [2022-11-03 01:40:15,127 INFO L226 Difference]: Without dead ends: 222 [2022-11-03 01:40:15,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1625 ImplicationChecksByTransitivity, 54.9s TimeCoverageRelationStatistics Valid=487, Invalid=7863, Unknown=30, NotChecked=362, Total=8742 [2022-11-03 01:40:15,129 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 272 mSDsluCounter, 2288 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2144 SdHoareTripleChecker+Invalid, 3212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 613 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-03 01:40:15,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 2144 Invalid, 3212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2487 Invalid, 0 Unknown, 613 Unchecked, 1.9s Time] [2022-11-03 01:40:15,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-03 01:40:15,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 175. [2022-11-03 01:40:15,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 114 states have (on average 1.5350877192982457) internal successors, (175), 158 states have internal predecessors, (175), 20 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:40:15,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 207 transitions. [2022-11-03 01:40:15,139 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 207 transitions. Word has length 38 [2022-11-03 01:40:15,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:40:15,140 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 207 transitions. [2022-11-03 01:40:15,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 38 states have internal predecessors, (61), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 01:40:15,141 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 207 transitions. [2022-11-03 01:40:15,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-03 01:40:15,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:40:15,142 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:40:15,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:40:15,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 01:40:15,343 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, check_seq_nextErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, check_seq_nextErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 80 more)] === [2022-11-03 01:40:15,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:40:15,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1403500622, now seen corresponding path program 1 times [2022-11-03 01:40:15,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:40:15,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224850282] [2022-11-03 01:40:15,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:15,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:40:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:40:17,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:40:17,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224850282] [2022-11-03 01:40:17,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224850282] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:40:17,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659453581] [2022-11-03 01:40:17,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:40:17,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:40:17,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:40:17,090 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:40:17,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7564d6a-470d-4769-aa8f-b472580a7eeb/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:40:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:40:17,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-03 01:40:17,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:40:17,326 INFO L356 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-03 01:40:17,326 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-11-03 01:40:17,462 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 01:40:17,491 INFO L356 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-03 01:40:17,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-03 01:40:17,633 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-03 01:40:17,633 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 24 treesize of output 28 [2022-11-03 01:40:17,655 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 14 treesize of output 10 [2022-11-03 01:40:17,909 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 01:40:17,910 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 48 treesize of output 39 [2022-11-03 01:40:18,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:40:18,324 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-11-03 01:40:18,324 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 3 case distinctions, treesize of input 53 treesize of output 67 [2022-11-03 01:40:18,388 INFO L356 Elim1Store]: treesize reduction 76, result has 39.7 percent of original size [2022-11-03 01:40:18,388 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 47 treesize of output 78 [2022-11-03 01:40:18,494 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 7 treesize of output 5 [2022-11-03 01:40:18,539 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 39 treesize of output 33 [2022-11-03 01:40:18,573 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 01:40:18,574 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 01:40:19,571 INFO L356 Elim1Store]: treesize reduction 88, result has 79.1 percent of original size [2022-11-03 01:40:19,571 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 146 treesize of output 451