./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/derefAfterFree2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/derefAfterFree2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c5050f69dd0fe75249366946a38ba884fb5943ccf611397d2d01e0ccda347b5 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:00:33,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:00:33,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:00:33,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:00:33,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:00:33,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:00:33,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:00:33,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:00:34,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:00:34,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:00:34,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:00:34,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:00:34,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:00:34,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:00:34,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:00:34,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:00:34,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:00:34,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:00:34,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:00:34,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:00:34,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:00:34,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:00:34,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:00:34,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:00:34,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:00:34,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:00:34,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:00:34,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:00:34,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:00:34,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:00:34,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:00:34,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:00:34,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:00:34,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:00:34,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:00:34,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:00:34,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:00:34,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:00:34,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:00:34,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:00:34,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:00:34,066 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-10-29 05:00:34,115 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:00:34,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:00:34,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:00:34,117 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:00:34,117 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:00:34,124 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:00:34,124 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:00:34,124 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:00:34,125 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:00:34,125 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:00:34,126 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:00:34,126 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:00:34,126 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:00:34,126 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:00:34,127 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:00:34,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-29 05:00:34,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-29 05:00:34,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:00:34,128 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:00:34,128 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-29 05:00:34,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:00:34,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:00:34,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:00:34,129 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-29 05:00:34,129 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-29 05:00:34,129 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-29 05:00:34,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:00:34,130 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:00:34,130 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:00:34,131 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:00:34,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:00:34,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:00:34,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:00:34,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:00:34,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:00:34,132 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:00:34,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:00:34,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:00:34,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:00:34,133 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c5050f69dd0fe75249366946a38ba884fb5943ccf611397d2d01e0ccda347b5 [2021-10-29 05:00:34,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:00:34,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:00:34,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:00:34,498 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:00:34,499 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:00:34,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/memsafety-ext3/derefAfterFree2.c [2021-10-29 05:00:34,575 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/data/1f80223e3/a3b61364f0704f9188e1068dd6da2753/FLAGcf95c06a8 [2021-10-29 05:00:34,991 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:00:34,991 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/sv-benchmarks/c/memsafety-ext3/derefAfterFree2.c [2021-10-29 05:00:34,998 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/data/1f80223e3/a3b61364f0704f9188e1068dd6da2753/FLAGcf95c06a8 [2021-10-29 05:00:35,385 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/data/1f80223e3/a3b61364f0704f9188e1068dd6da2753 [2021-10-29 05:00:35,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:00:35,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:00:35,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:00:35,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:00:35,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:00:35,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:00:35" (1/1) ... [2021-10-29 05:00:35,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6d991a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:35, skipping insertion in model container [2021-10-29 05:00:35,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:00:35" (1/1) ... [2021-10-29 05:00:35,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:00:35,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:00:35,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:00:35,587 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:00:35,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:00:35,613 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:00:35,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:35 WrapperNode [2021-10-29 05:00:35,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:00:35,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:00:35,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:00:35,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:00:35,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:35" (1/1) ... [2021-10-29 05:00:35,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:35" (1/1) ... [2021-10-29 05:00:35,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:00:35,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:00:35,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:00:35,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:00:35,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:35" (1/1) ... [2021-10-29 05:00:35,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:35" (1/1) ... [2021-10-29 05:00:35,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:35" (1/1) ... [2021-10-29 05:00:35,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:35" (1/1) ... [2021-10-29 05:00:35,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:35" (1/1) ... [2021-10-29 05:00:35,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:35" (1/1) ... [2021-10-29 05:00:35,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:35" (1/1) ... [2021-10-29 05:00:35,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:00:35,665 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:00:35,665 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:00:35,665 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:00:35,666 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:35" (1/1) ... [2021-10-29 05:00:35,673 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:00:35,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:00:35,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:00:35,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:00:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 05:00:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-29 05:00:35,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:00:35,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:00:35,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:00:35,964 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:00:35,965 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-29 05:00:35,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:00:35 BoogieIcfgContainer [2021-10-29 05:00:35,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:00:35,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:00:35,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:00:35,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:00:35,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:00:35" (1/3) ... [2021-10-29 05:00:35,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3248e471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:00:35, skipping insertion in model container [2021-10-29 05:00:35,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:00:35" (2/3) ... [2021-10-29 05:00:35,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3248e471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:00:35, skipping insertion in model container [2021-10-29 05:00:35,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:00:35" (3/3) ... [2021-10-29 05:00:35,977 INFO L111 eAbstractionObserver]: Analyzing ICFG derefAfterFree2.c [2021-10-29 05:00:35,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:00:35,983 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-29 05:00:36,064 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:00:36,071 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:00:36,071 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-29 05:00:36,084 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:00:36,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:00:36,090 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:00:36,090 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:00:36,091 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 3 more)] === [2021-10-29 05:00:36,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:00:36,096 INFO L85 PathProgramCache]: Analyzing trace with hash 64636, now seen corresponding path program 1 times [2021-10-29 05:00:36,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:00:36,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951788444] [2021-10-29 05:00:36,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:00:36,107 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:00:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:00:36,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:00:36,315 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:00:36,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951788444] [2021-10-29 05:00:36,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951788444] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:00:36,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:00:36,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:00:36,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591677810] [2021-10-29 05:00:36,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:00:36,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:00:36,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:00:36,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:00:36,340 INFO L87 Difference]: Start difference. First operand has 16 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) 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) [2021-10-29 05:00:36,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:00:36,388 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-10-29 05:00:36,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:00:36,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.0) 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 [2021-10-29 05:00:36,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:00:36,398 INFO L225 Difference]: With dead ends: 22 [2021-10-29 05:00:36,398 INFO L226 Difference]: Without dead ends: 21 [2021-10-29 05:00:36,400 INFO L786 BasicCegarLoop]: 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 [2021-10-29 05:00:36,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-29 05:00:36,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2021-10-29 05:00:36,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.75) internal successors, (21), 17 states have internal predecessors, (21), 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) [2021-10-29 05:00:36,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-10-29 05:00:36,429 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 3 [2021-10-29 05:00:36,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:00:36,429 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-10-29 05:00:36,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.0) 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) [2021-10-29 05:00:36,430 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-10-29 05:00:36,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:00:36,430 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:00:36,431 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:00:36,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:00:36,431 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 3 more)] === [2021-10-29 05:00:36,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:00:36,432 INFO L85 PathProgramCache]: Analyzing trace with hash 63748, now seen corresponding path program 1 times [2021-10-29 05:00:36,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:00:36,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232584981] [2021-10-29 05:00:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:00:36,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:00:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:00:36,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:00:36,461 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:00:36,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232584981] [2021-10-29 05:00:36,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232584981] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:00:36,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:00:36,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:00:36,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65887762] [2021-10-29 05:00:36,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:00:36,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:00:36,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:00:36,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:00:36,466 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 3 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) [2021-10-29 05:00:36,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:00:36,485 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-10-29 05:00:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:00:36,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2021-10-29 05:00:36,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:00:36,487 INFO L225 Difference]: With dead ends: 23 [2021-10-29 05:00:36,487 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 05:00:36,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:00:36,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 05:00:36,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-10-29 05:00:36,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.6) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:00:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-10-29 05:00:36,491 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 3 [2021-10-29 05:00:36,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:00:36,492 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-10-29 05:00:36,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2021-10-29 05:00:36,492 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-10-29 05:00:36,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:00:36,493 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:00:36,493 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:00:36,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:00:36,494 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 3 more)] === [2021-10-29 05:00:36,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:00:36,494 INFO L85 PathProgramCache]: Analyzing trace with hash 63749, now seen corresponding path program 1 times [2021-10-29 05:00:36,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:00:36,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275721244] [2021-10-29 05:00:36,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:00:36,495 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:00:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:00:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:00:36,545 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:00:36,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275721244] [2021-10-29 05:00:36,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275721244] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:00:36,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:00:36,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:00:36,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160221590] [2021-10-29 05:00:36,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:00:36,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:00:36,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:00:36,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:00:36,549 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 3 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) [2021-10-29 05:00:36,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:00:36,576 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-10-29 05:00:36,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:00:36,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 [2021-10-29 05:00:36,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:00:36,577 INFO L225 Difference]: With dead ends: 21 [2021-10-29 05:00:36,577 INFO L226 Difference]: Without dead ends: 21 [2021-10-29 05:00:36,578 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:00:36,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-29 05:00:36,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-10-29 05:00:36,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 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) [2021-10-29 05:00:36,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-29 05:00:36,581 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 3 [2021-10-29 05:00:36,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:00:36,582 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-29 05:00:36,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2021-10-29 05:00:36,582 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-29 05:00:36,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:00:36,583 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:00:36,583 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:00:36,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:00:36,584 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 3 more)] === [2021-10-29 05:00:36,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:00:36,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1257107777, now seen corresponding path program 1 times [2021-10-29 05:00:36,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:00:36,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438758329] [2021-10-29 05:00:36,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:00:36,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:00:36,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:00:36,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:00:36,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:00:36,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438758329] [2021-10-29 05:00:36,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438758329] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:00:36,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598223253] [2021-10-29 05:00:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:00:36,623 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:00:36,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:00:36,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:00:36,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:00:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:00:36,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:00:36,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:00:36,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:00:36,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:00:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:00:36,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598223253] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:00:36,833 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1973945795] [2021-10-29 05:00:36,855 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-29 05:00:36,855 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:00:36,860 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:00:36,866 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:00:36,867 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:00:36,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:36,919 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:36,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:36,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-10-29 05:00:36,922 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:36,922 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:36,924 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-10-29 05:00:36,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 05:00:36,979 INFO L388 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 [2021-10-29 05:00:36,980 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:36,981 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:00:36,982 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:36,983 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:00:36,983 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:36,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,019 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,025 INFO L388 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 [2021-10-29 05:00:37,026 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,027 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:00:37,028 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,035 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:00:37,036 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:37,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,049 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,052 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,054 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-29 05:00:37,055 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:00:37,056 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:46, output treesize:44 [2021-10-29 05:00:37,073 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.5 percent of original size [2021-10-29 05:00:37,075 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:37,078 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,079 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:00:37,083 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-29 05:00:37,099 INFO L388 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 11 [2021-10-29 05:00:37,100 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,101 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:37,101 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,102 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:37,102 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:37,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,131 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,134 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,137 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-10-29 05:00:37,138 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:00:37,138 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:81, output treesize:77 [2021-10-29 05:00:37,155 INFO L180 QuantifierPusher]: treesize reduction 4, result has 95.4 percent of original size [2021-10-29 05:00:37,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-10-29 05:00:37,175 INFO L180 QuantifierPusher]: treesize reduction 21, result has 81.7 percent of original size [2021-10-29 05:00:37,183 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:37,184 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:00:37,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-29 05:00:37,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:00:37,201 INFO L388 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 28 treesize of output 27 [2021-10-29 05:00:37,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 05:00:37,205 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,206 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 05:00:37,206 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:37,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,217 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,219 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-29 05:00:37,221 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:00:37,222 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:93, output treesize:89 [2021-10-29 05:00:37,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,248 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,297 INFO L180 QuantifierPusher]: treesize reduction 8, result has 96.1 percent of original size [2021-10-29 05:00:37,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 196 [2021-10-29 05:00:37,331 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,342 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:37,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,348 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:37,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:00:37,351 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:37,354 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-10-29 05:00:37,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-10-29 05:00:37,361 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:37,369 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 187 [2021-10-29 05:00:37,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-10-29 05:00:37,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:00:37,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:00:37,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:00:37,437 INFO L388 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 40 treesize of output 42 [2021-10-29 05:00:37,438 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 05:00:37,442 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 05:00:37,443 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:37,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:00:37,457 INFO L388 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 28 treesize of output 27 [2021-10-29 05:00:37,458 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 05:00:37,460 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,461 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 05:00:37,461 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:37,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,484 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,494 INFO L180 QuantifierPusher]: treesize reduction 90, result has 68.0 percent of original size [2021-10-29 05:00:37,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-10-29 05:00:37,501 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-29 05:00:37,501 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:289, output treesize:191 [2021-10-29 05:00:37,508 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,573 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,576 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,604 INFO L180 QuantifierPusher]: treesize reduction 18, result has 55.0 percent of original size [2021-10-29 05:00:37,606 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:00:37,608 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,609 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:37,610 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,610 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:00:37,611 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-29 05:00:37,627 INFO L388 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 11 [2021-10-29 05:00:37,631 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,632 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:37,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,633 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:37,633 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:37,634 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,637 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,639 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,641 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-29 05:00:37,642 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:00:37,644 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:52 [2021-10-29 05:00:37,650 INFO L180 QuantifierPusher]: treesize reduction 18, result has 55.0 percent of original size [2021-10-29 05:00:37,653 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:00:37,655 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,678 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,690 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,694 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,730 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,748 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,749 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:37,750 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,751 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:00:37,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-10-29 05:00:37,773 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:00:37,774 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,774 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:37,775 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:37,775 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:37,793 INFO L388 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 11 [2021-10-29 05:00:37,794 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,794 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:37,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,797 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:37,798 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:37,811 INFO L388 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 11 [2021-10-29 05:00:37,811 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,812 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:37,812 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,813 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:37,813 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:37,822 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:00:37,822 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,823 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:37,823 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:37,824 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:37,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,839 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:37,845 INFO L180 QuantifierPusher]: treesize reduction 48, result has 73.0 percent of original size [2021-10-29 05:00:37,848 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-29 05:00:37,848 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-29 05:00:37,849 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:374, output treesize:130 [2021-10-29 05:00:37,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,855 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,866 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:37,877 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:00:38,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:00:38,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:00:38,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-10-29 05:00:38,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858216884] [2021-10-29 05:00:38,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:00:38,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:00:38,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:00:38,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:00:38,541 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-10-29 05:00:38,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:00:38,584 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-10-29 05:00:38,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:00:38,585 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 05:00:38,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:00:38,586 INFO L225 Difference]: With dead ends: 32 [2021-10-29 05:00:38,586 INFO L226 Difference]: Without dead ends: 32 [2021-10-29 05:00:38,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:00:38,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-29 05:00:38,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-10-29 05:00:38,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.4) internal successors, (35), 29 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:00:38,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2021-10-29 05:00:38,592 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 7 [2021-10-29 05:00:38,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:00:38,592 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2021-10-29 05:00:38,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-10-29 05:00:38,593 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2021-10-29 05:00:38,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:00:38,593 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:00:38,593 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-29 05:00:38,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:00:38,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:00:38,807 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 3 more)] === [2021-10-29 05:00:38,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:00:38,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1257108664, now seen corresponding path program 1 times [2021-10-29 05:00:38,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:00:38,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342069822] [2021-10-29 05:00:38,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:00:38,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:00:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:00:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:00:38,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:00:38,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342069822] [2021-10-29 05:00:38,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342069822] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:00:38,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:00:38,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:00:38,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235940886] [2021-10-29 05:00:38,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:00:38,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:00:38,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:00:38,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:00:38,882 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:00:38,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:00:38,910 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-10-29 05:00:38,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:00:38,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-29 05:00:38,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:00:38,913 INFO L225 Difference]: With dead ends: 28 [2021-10-29 05:00:38,913 INFO L226 Difference]: Without dead ends: 28 [2021-10-29 05:00:38,913 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:00:38,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-29 05:00:38,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-29 05:00:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:00:38,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-10-29 05:00:38,922 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 7 [2021-10-29 05:00:38,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:00:38,923 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-10-29 05:00:38,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:00:38,923 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-10-29 05:00:38,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:00:38,925 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:00:38,925 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2021-10-29 05:00:38,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-29 05:00:38,926 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 3 more)] === [2021-10-29 05:00:38,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:00:38,926 INFO L85 PathProgramCache]: Analyzing trace with hash 162763176, now seen corresponding path program 1 times [2021-10-29 05:00:38,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:00:38,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637378355] [2021-10-29 05:00:38,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:00:38,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:00:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:00:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-29 05:00:38,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:00:38,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637378355] [2021-10-29 05:00:38,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637378355] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:00:38,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:00:38,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-29 05:00:38,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536821736] [2021-10-29 05:00:38,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:00:38,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:00:38,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:00:38,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:00:38,997 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:00:39,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:00:39,009 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-10-29 05:00:39,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:00:39,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-29 05:00:39,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:00:39,011 INFO L225 Difference]: With dead ends: 27 [2021-10-29 05:00:39,011 INFO L226 Difference]: Without dead ends: 27 [2021-10-29 05:00:39,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:00:39,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-29 05:00:39,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-29 05:00:39,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:00:39,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-10-29 05:00:39,019 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 14 [2021-10-29 05:00:39,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:00:39,020 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-10-29 05:00:39,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:00:39,020 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-10-29 05:00:39,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 05:00:39,021 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:00:39,021 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2021-10-29 05:00:39,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-29 05:00:39,021 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 3 more)] === [2021-10-29 05:00:39,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:00:39,022 INFO L85 PathProgramCache]: Analyzing trace with hash -52758481, now seen corresponding path program 1 times [2021-10-29 05:00:39,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:00:39,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153658542] [2021-10-29 05:00:39,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:00:39,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:00:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:00:39,074 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:00:39,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:00:39,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153658542] [2021-10-29 05:00:39,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153658542] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:00:39,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091017612] [2021-10-29 05:00:39,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:00:39,076 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:00:39,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:00:39,077 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:00:39,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 05:00:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:00:39,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-29 05:00:39,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:00:39,199 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:00:39,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:00:39,272 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:00:39,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091017612] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:00:39,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [4388266] [2021-10-29 05:00:39,280 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-29 05:00:39,281 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:00:39,282 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:00:39,282 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:00:39,282 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:00:39,298 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,299 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,300 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,300 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-10-29 05:00:39,301 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,301 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,302 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-10-29 05:00:39,303 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 05:00:39,312 INFO L388 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 [2021-10-29 05:00:39,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:00:39,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,317 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:00:39,317 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,319 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,324 INFO L388 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 [2021-10-29 05:00:39,324 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:00:39,325 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:00:39,326 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,326 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,328 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,329 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,330 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-29 05:00:39,331 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,331 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:46, output treesize:44 [2021-10-29 05:00:39,337 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.5 percent of original size [2021-10-29 05:00:39,338 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,339 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:00:39,340 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-29 05:00:39,347 INFO L388 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 11 [2021-10-29 05:00:39,348 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,348 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:39,350 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,351 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:39,352 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,354 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,355 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,356 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-10-29 05:00:39,357 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,357 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:81, output treesize:77 [2021-10-29 05:00:39,365 INFO L180 QuantifierPusher]: treesize reduction 4, result has 95.4 percent of original size [2021-10-29 05:00:39,369 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.5 percent of original size 63 [2021-10-29 05:00:39,377 INFO L180 QuantifierPusher]: treesize reduction 6, result has 94.1 percent of original size [2021-10-29 05:00:39,379 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,379 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,380 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-10-29 05:00:39,382 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-29 05:00:39,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:00:39,393 INFO L388 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 23 treesize of output 22 [2021-10-29 05:00:39,394 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,395 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-29 05:00:39,396 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,396 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-10-29 05:00:39,397 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,397 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,400 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,403 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-10-29 05:00:39,405 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,406 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:95, output treesize:91 [2021-10-29 05:00:39,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,459 INFO L180 QuantifierPusher]: treesize reduction 8, result has 96.2 percent of original size [2021-10-29 05:00:39,469 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 198 [2021-10-29 05:00:39,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,484 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,487 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,489 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,490 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-10-29 05:00:39,492 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,493 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:00:39,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 207 [2021-10-29 05:00:39,502 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,505 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-10-29 05:00:39,513 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 240 [2021-10-29 05:00:39,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:00:39,534 INFO L388 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 28 treesize of output 27 [2021-10-29 05:00:39,536 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,537 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 05:00:39,538 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,538 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 05:00:39,539 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:00:39,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:00:39,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:00:39,553 INFO L388 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 35 treesize of output 37 [2021-10-29 05:00:39,554 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,557 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-29 05:00:39,558 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,558 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-10-29 05:00:39,559 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,572 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,580 INFO L180 QuantifierPusher]: treesize reduction 90, result has 68.2 percent of original size [2021-10-29 05:00:39,582 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 193 [2021-10-29 05:00:39,583 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-29 05:00:39,583 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:291, output treesize:193 [2021-10-29 05:00:39,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,624 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,627 INFO L180 QuantifierPusher]: treesize reduction 18, result has 55.0 percent of original size [2021-10-29 05:00:39,629 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:00:39,633 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,636 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,637 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:00:39,638 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-29 05:00:39,644 INFO L388 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 11 [2021-10-29 05:00:39,645 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:39,646 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,647 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:39,647 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,649 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,651 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-29 05:00:39,652 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,652 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:52 [2021-10-29 05:00:39,656 INFO L180 QuantifierPusher]: treesize reduction 18, result has 55.0 percent of original size [2021-10-29 05:00:39,658 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:00:39,662 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,662 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,663 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,663 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:00:39,664 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-29 05:00:39,670 INFO L388 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 11 [2021-10-29 05:00:39,671 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,671 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:39,672 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,672 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:39,672 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,674 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,677 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,678 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-29 05:00:39,678 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,679 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:52 [2021-10-29 05:00:39,679 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,717 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,723 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,725 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,726 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,727 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,727 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:00:39,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-29 05:00:39,731 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,733 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,735 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-10-29 05:00:39,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-10-29 05:00:39,752 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:00:39,753 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:39,753 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,754 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:39,754 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 12 treesize of output 9 [2021-10-29 05:00:39,766 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,767 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:00:39,768 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:00:39,768 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:00:39,777 INFO L388 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 1 [2021-10-29 05:00:39,778 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,778 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:39,778 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,779 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:39,779 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,785 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:00:39,786 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:39,787 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,787 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:39,787 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,800 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,804 INFO L180 QuantifierPusher]: treesize reduction 232, result has 18.3 percent of original size [2021-10-29 05:00:39,806 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-29 05:00:39,807 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,807 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:557, output treesize:52 [2021-10-29 05:00:39,808 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,814 INFO L185 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size 40 [2021-10-29 05:00:39,817 INFO L180 QuantifierPusher]: treesize reduction 85, result has 1.2 percent of original size [2021-10-29 05:00:39,817 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:39,819 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,821 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-29 05:00:39,824 INFO L180 QuantifierPusher]: treesize reduction 94, result has 1.1 percent of original size [2021-10-29 05:00:39,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:39,833 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,840 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,844 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,846 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,848 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,850 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,850 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,851 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:00:39,854 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-29 05:00:39,854 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 139 [2021-10-29 05:00:39,861 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,863 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,864 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,864 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,865 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-29 05:00:39,868 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-29 05:00:39,870 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,873 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 134 [2021-10-29 05:00:39,876 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 280 [2021-10-29 05:00:39,877 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:39,879 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,881 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 143 [2021-10-29 05:00:39,886 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-10-29 05:00:39,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 12 treesize of output 9 [2021-10-29 05:00:39,905 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:00:39,907 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:00:39,908 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,914 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:00:39,914 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:39,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:39,916 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:00:39,926 INFO L388 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 1 [2021-10-29 05:00:39,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:39,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:39,932 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,937 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:00:39,938 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,938 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:39,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,945 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:39,945 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,958 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,962 INFO L180 QuantifierPusher]: treesize reduction 232, result has 18.3 percent of original size [2021-10-29 05:00:39,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-29 05:00:39,963 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:00:39,964 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:557, output treesize:52 [2021-10-29 05:00:39,965 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:39,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 54 [2021-10-29 05:00:39,969 INFO L180 QuantifierPusher]: treesize reduction 94, result has 1.1 percent of original size [2021-10-29 05:00:39,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:39,971 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,982 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,992 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,995 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:39,998 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,008 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:40,013 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 120 [2021-10-29 05:00:40,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,030 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,041 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,063 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,067 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,087 INFO L180 QuantifierPusher]: treesize reduction 18, result has 76.0 percent of original size [2021-10-29 05:00:40,088 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:40,089 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:40,089 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:00:40,090 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-29 05:00:40,095 INFO L388 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 11 [2021-10-29 05:00:40,096 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:40,096 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:40,096 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:40,097 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:40,097 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:40,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,098 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:40,099 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:40,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-29 05:00:40,100 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:00:40,100 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:52 [2021-10-29 05:00:40,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,104 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:40,118 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:00:40,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:00:40,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:00:40,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-10-29 05:00:40,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968606707] [2021-10-29 05:00:40,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-29 05:00:40,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:00:40,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-29 05:00:40,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-29 05:00:40,592 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:00:40,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:00:40,634 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-10-29 05:00:40,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:00:40,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-29 05:00:40,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:00:40,635 INFO L225 Difference]: With dead ends: 34 [2021-10-29 05:00:40,635 INFO L226 Difference]: Without dead ends: 34 [2021-10-29 05:00:40,636 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-29 05:00:40,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-29 05:00:40,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-10-29 05:00:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.096774193548387) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:00:40,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2021-10-29 05:00:40,645 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 18 [2021-10-29 05:00:40,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:00:40,645 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2021-10-29 05:00:40,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:00:40,645 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2021-10-29 05:00:40,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:00:40,646 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:00:40,646 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1] [2021-10-29 05:00:40,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-10-29 05:00:40,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-29 05:00:40,859 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 3 more)] === [2021-10-29 05:00:40,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:00:40,859 INFO L85 PathProgramCache]: Analyzing trace with hash -197830453, now seen corresponding path program 2 times [2021-10-29 05:00:40,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:00:40,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427581224] [2021-10-29 05:00:40,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:00:40,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:00:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:00:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:00:40,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:00:40,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427581224] [2021-10-29 05:00:40,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427581224] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-29 05:00:40,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794769985] [2021-10-29 05:00:40,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-29 05:00:40,946 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:00:40,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:00:40,947 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:00:40,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 05:00:41,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-29 05:00:41,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-29 05:00:41,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-29 05:00:41,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:00:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:00:41,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:00:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:00:41,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794769985] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-29 05:00:41,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [240288869] [2021-10-29 05:00:41,212 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-10-29 05:00:41,212 INFO L166 IcfgInterpreter]: Building call graph [2021-10-29 05:00:41,213 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-29 05:00:41,213 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-29 05:00:41,213 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-29 05:00:41,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,218 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:41,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-10-29 05:00:41,219 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:41,219 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,220 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-10-29 05:00:41,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-10-29 05:00:41,225 INFO L388 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 [2021-10-29 05:00:41,226 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,226 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:00:41,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:00:41,227 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:41,228 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,229 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,233 INFO L388 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 [2021-10-29 05:00:41,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:00:41,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,235 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-10-29 05:00:41,235 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:41,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,237 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,238 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-10-29 05:00:41,239 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:00:41,239 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:46, output treesize:44 [2021-10-29 05:00:41,242 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.5 percent of original size [2021-10-29 05:00:41,243 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:41,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:00:41,245 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-29 05:00:41,250 INFO L388 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 11 [2021-10-29 05:00:41,251 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:41,251 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,252 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:41,252 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:41,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,254 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,256 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-10-29 05:00:41,257 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:00:41,257 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:81, output treesize:77 [2021-10-29 05:00:41,260 INFO L180 QuantifierPusher]: treesize reduction 4, result has 95.4 percent of original size [2021-10-29 05:00:41,262 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79 [2021-10-29 05:00:41,265 INFO L180 QuantifierPusher]: treesize reduction 21, result has 81.7 percent of original size [2021-10-29 05:00:41,266 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:41,266 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,267 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:00:41,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 95 [2021-10-29 05:00:41,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:00:41,275 INFO L388 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 28 treesize of output 27 [2021-10-29 05:00:41,276 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,277 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 05:00:41,277 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 05:00:41,278 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:41,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,281 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,282 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,283 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 89 [2021-10-29 05:00:41,283 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:00:41,283 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:93, output treesize:89 [2021-10-29 05:00:41,285 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,309 INFO L180 QuantifierPusher]: treesize reduction 8, result has 96.1 percent of original size [2021-10-29 05:00:41,313 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 196 [2021-10-29 05:00:41,317 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,320 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:41,322 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,323 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:41,324 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,324 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-10-29 05:00:41,325 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:41,326 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,326 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-10-29 05:00:41,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 205 [2021-10-29 05:00:41,329 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:41,330 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,332 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 187 [2021-10-29 05:00:41,335 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-10-29 05:00:41,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:00:41,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:00:41,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:00:41,352 INFO L388 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 40 treesize of output 42 [2021-10-29 05:00:41,353 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,354 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 05:00:41,355 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-10-29 05:00:41,356 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:41,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-29 05:00:41,364 INFO L388 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 28 treesize of output 27 [2021-10-29 05:00:41,365 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,366 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 05:00:41,367 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,367 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-29 05:00:41,368 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:41,368 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,378 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,383 INFO L180 QuantifierPusher]: treesize reduction 90, result has 68.0 percent of original size [2021-10-29 05:00:41,385 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-10-29 05:00:41,386 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-29 05:00:41,386 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:289, output treesize:191 [2021-10-29 05:00:41,389 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,402 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,414 INFO L180 QuantifierPusher]: treesize reduction 18, result has 55.0 percent of original size [2021-10-29 05:00:41,416 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:00:41,417 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,418 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:41,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,419 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:00:41,420 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 57 [2021-10-29 05:00:41,424 INFO L388 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 11 [2021-10-29 05:00:41,425 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,425 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:41,426 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,426 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:41,426 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:41,427 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,428 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,429 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,430 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-10-29 05:00:41,430 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-10-29 05:00:41,430 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:52 [2021-10-29 05:00:41,433 INFO L180 QuantifierPusher]: treesize reduction 18, result has 55.0 percent of original size [2021-10-29 05:00:41,434 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-29 05:00:41,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,443 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,478 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,479 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-29 05:00:41,479 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-10-29 05:00:41,482 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 154 [2021-10-29 05:00:41,492 INFO L388 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 11 [2021-10-29 05:00:41,492 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,493 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:41,493 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,494 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:41,494 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:41,499 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:00:41,500 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,500 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:41,501 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:41,501 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:41,507 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-10-29 05:00:41,508 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:41,508 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-10-29 05:00:41,509 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:41,516 INFO L388 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 11 [2021-10-29 05:00:41,516 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,517 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:41,517 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,517 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-10-29 05:00:41,518 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-10-29 05:00:41,518 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,524 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-29 05:00:41,528 INFO L180 QuantifierPusher]: treesize reduction 48, result has 73.0 percent of original size [2021-10-29 05:00:41,529 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 130 [2021-10-29 05:00:41,530 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-10-29 05:00:41,530 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 1 variables, input treesize:374, output treesize:130 [2021-10-29 05:00:41,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:00:41,546 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-29 05:00:42,141 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:00:42,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-29 05:00:42,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-10-29 05:00:42,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536044951] [2021-10-29 05:00:42,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 05:00:42,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:00:42,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 05:00:42,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-10-29 05:00:42,144 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 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) [2021-10-29 05:00:42,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:00:42,212 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2021-10-29 05:00:42,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 05:00:42,212 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 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 23 [2021-10-29 05:00:42,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:00:42,215 INFO L225 Difference]: With dead ends: 48 [2021-10-29 05:00:42,215 INFO L226 Difference]: Without dead ends: 48 [2021-10-29 05:00:42,216 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2021-10-29 05:00:42,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-29 05:00:42,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-10-29 05:00:42,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 47 states have internal predecessors, (53), 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) [2021-10-29 05:00:42,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2021-10-29 05:00:42,232 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 23 [2021-10-29 05:00:42,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:00:42,232 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2021-10-29 05:00:42,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 11 states have internal predecessors, (41), 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) [2021-10-29 05:00:42,233 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2021-10-29 05:00:42,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-29 05:00:42,234 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:00:42,234 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1, 1, 1] [2021-10-29 05:00:42,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:00:42,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2021-10-29 05:00:42,447 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 3 more)] === [2021-10-29 05:00:42,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:00:42,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1316000454, now seen corresponding path program 2 times [2021-10-29 05:00:42,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:00:42,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978084226] [2021-10-29 05:00:42,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:00:42,448 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:00:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:00:42,472 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:00:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:00:42,508 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:00:42,508 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:00:42,509 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-29 05:00:42,511 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-29 05:00:42,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:00:42,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:00:42,518 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE [2021-10-29 05:00:42,519 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK [2021-10-29 05:00:42,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-10-29 05:00:42,522 INFO L731 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2021-10-29 05:00:42,525 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:00:42,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:00:42 BoogieIcfgContainer [2021-10-29 05:00:42,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:00:42,556 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:00:42,556 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:00:42,557 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:00:42,557 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:00:35" (3/4) ... [2021-10-29 05:00:42,558 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:00:42,592 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:00:42,592 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:00:42,592 INFO L168 Benchmark]: Toolchain (without parser) took 7203.52 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 62.0 MB in the beginning and 90.7 MB in the end (delta: -28.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:00:42,593 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 71.7 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:00:42,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.11 ms. Allocated memory is still 98.6 MB. Free memory was 62.0 MB in the beginning and 74.3 MB in the end (delta: -12.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:00:42,593 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.92 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 72.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:00:42,593 INFO L168 Benchmark]: Boogie Preprocessor took 19.04 ms. Allocated memory is still 98.6 MB. Free memory was 72.8 MB in the beginning and 71.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:00:42,594 INFO L168 Benchmark]: RCFGBuilder took 302.93 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 62.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:00:42,594 INFO L168 Benchmark]: TraceAbstraction took 6586.81 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 61.8 MB in the beginning and 93.9 MB in the end (delta: -32.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:00:42,594 INFO L168 Benchmark]: Witness Printer took 35.62 ms. Allocated memory is still 125.8 MB. Free memory was 93.9 MB in the beginning and 90.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:00:42,595 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 71.7 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 223.11 ms. Allocated memory is still 98.6 MB. Free memory was 62.0 MB in the beginning and 74.3 MB in the end (delta: -12.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.92 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 72.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.04 ms. Allocated memory is still 98.6 MB. Free memory was 72.8 MB in the beginning and 71.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 302.93 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 62.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6586.81 ms. Allocated memory was 98.6 MB in the beginning and 125.8 MB in the end (delta: 27.3 MB). Free memory was 61.8 MB in the beginning and 93.9 MB in the end (delta: -32.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 35.62 ms. Allocated memory is still 125.8 MB. Free memory was 93.9 MB in the beginning and 90.7 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 9]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L6] int* p = malloc(10 * sizeof(int)); [L8] int i = 0; [L8] COND TRUE i < 10 [L9] p[i] = 1 [L10] COND FALSE !(i == 5) [L8] i++ [L8] COND TRUE i < 10 [L9] p[i] = 1 [L10] COND FALSE !(i == 5) [L8] i++ [L8] COND TRUE i < 10 [L9] p[i] = 1 [L10] COND FALSE !(i == 5) [L8] i++ [L8] COND TRUE i < 10 [L9] p[i] = 1 [L10] COND FALSE !(i == 5) [L8] i++ [L8] COND TRUE i < 10 [L9] p[i] = 1 [L10] COND FALSE !(i == 5) [L8] i++ [L8] COND TRUE i < 10 [L9] p[i] = 1 [L10] COND TRUE i == 5 [L11] free(p) [L11] free(p) [L11] free(p) [L8] i++ [L8] COND TRUE i < 10 [L9] p[i] = 1 - UnprovableResult [Line: 9]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 11]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 11]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 11]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 5]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 6.4s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 66 SDtfs, 119 SDslu, 49 SDs, 0 SdLazy, 166 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 160 GetRequests, 110 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=8, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 10 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 515 SizeOfPredicates, 0 NumberOfNonLiveVariables, 151 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 36/204 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-29 05:00:42,645 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20df5aab-ab0e-4b76-afe2-25df783aadee/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...