./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a0a808cbaf75e35690b91e29e30a5a3e0888859a17f932e1ee324e5b23ddf983 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 21:56:05,492 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 21:56:05,494 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 21:56:05,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 21:56:05,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 21:56:05,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 21:56:05,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 21:56:05,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 21:56:05,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 21:56:05,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 21:56:05,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 21:56:05,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 21:56:05,540 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 21:56:05,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 21:56:05,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 21:56:05,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 21:56:05,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 21:56:05,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 21:56:05,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 21:56:05,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 21:56:05,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 21:56:05,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 21:56:05,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 21:56:05,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 21:56:05,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 21:56:05,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 21:56:05,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 21:56:05,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 21:56:05,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 21:56:05,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 21:56:05,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 21:56:05,573 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 21:56:05,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 21:56:05,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 21:56:05,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 21:56:05,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 21:56:05,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 21:56:05,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 21:56:05,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 21:56:05,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 21:56:05,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 21:56:05,580 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-18 21:56:05,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 21:56:05,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 21:56:05,622 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 21:56:05,622 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 21:56:05,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 21:56:05,623 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 21:56:05,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 21:56:05,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 21:56:05,630 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 21:56:05,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 21:56:05,630 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 21:56:05,630 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 21:56:05,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 21:56:05,631 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 21:56:05,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 21:56:05,631 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 21:56:05,631 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 21:56:05,631 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-18 21:56:05,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 21:56:05,632 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 21:56:05,632 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 21:56:05,632 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 21:56:05,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 21:56:05,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 21:56:05,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 21:56:05,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 21:56:05,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 21:56:05,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 21:56:05,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 21:56:05,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 21:56:05,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 21:56:05,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0a808cbaf75e35690b91e29e30a5a3e0888859a17f932e1ee324e5b23ddf983 [2021-12-18 21:56:05,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 21:56:05,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 21:56:05,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 21:56:05,835 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 21:56:05,836 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 21:56:05,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i [2021-12-18 21:56:05,888 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84d600978/385c10cecb64422194b65f13316c885d/FLAG8d4c6394a [2021-12-18 21:56:06,388 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 21:56:06,389 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i [2021-12-18 21:56:06,418 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84d600978/385c10cecb64422194b65f13316c885d/FLAG8d4c6394a [2021-12-18 21:56:06,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84d600978/385c10cecb64422194b65f13316c885d [2021-12-18 21:56:06,914 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 21:56:06,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 21:56:06,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 21:56:06,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 21:56:06,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 21:56:06,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:56:06" (1/1) ... [2021-12-18 21:56:06,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673a4ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:56:06, skipping insertion in model container [2021-12-18 21:56:06,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:56:06" (1/1) ... [2021-12-18 21:56:06,925 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 21:56:06,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 21:56:07,157 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i[24450,24463] [2021-12-18 21:56:07,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 21:56:07,173 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 21:56:07,225 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/dll2n_prepend_unequal.i[24450,24463] [2021-12-18 21:56:07,226 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 21:56:07,248 INFO L208 MainTranslator]: Completed translation [2021-12-18 21:56:07,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:56:07 WrapperNode [2021-12-18 21:56:07,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 21:56:07,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 21:56:07,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 21:56:07,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 21:56:07,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:56:07" (1/1) ... [2021-12-18 21:56:07,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:56:07" (1/1) ... [2021-12-18 21:56:07,298 INFO L137 Inliner]: procedures = 127, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 126 [2021-12-18 21:56:07,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 21:56:07,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 21:56:07,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 21:56:07,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 21:56:07,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:56:07" (1/1) ... [2021-12-18 21:56:07,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:56:07" (1/1) ... [2021-12-18 21:56:07,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:56:07" (1/1) ... [2021-12-18 21:56:07,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:56:07" (1/1) ... [2021-12-18 21:56:07,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:56:07" (1/1) ... [2021-12-18 21:56:07,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:56:07" (1/1) ... [2021-12-18 21:56:07,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:56:07" (1/1) ... [2021-12-18 21:56:07,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 21:56:07,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 21:56:07,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 21:56:07,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 21:56:07,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:56:07" (1/1) ... [2021-12-18 21:56:07,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 21:56:07,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 21:56:07,348 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 21:56:07,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 21:56:07,375 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-12-18 21:56:07,376 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-12-18 21:56:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 21:56:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 21:56:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 21:56:07,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 21:56:07,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 21:56:07,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 21:56:07,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 21:56:07,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 21:56:07,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 21:56:07,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 21:56:07,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 21:56:07,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 21:56:07,484 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 21:56:07,495 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 21:56:07,533 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-12-18 21:56:07,774 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 21:56:07,779 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 21:56:07,780 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-18 21:56:07,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:56:07 BoogieIcfgContainer [2021-12-18 21:56:07,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 21:56:07,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 21:56:07,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 21:56:07,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 21:56:07,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 09:56:06" (1/3) ... [2021-12-18 21:56:07,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9f71fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 09:56:07, skipping insertion in model container [2021-12-18 21:56:07,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:56:07" (2/3) ... [2021-12-18 21:56:07,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9f71fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 09:56:07, skipping insertion in model container [2021-12-18 21:56:07,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:56:07" (3/3) ... [2021-12-18 21:56:07,789 INFO L111 eAbstractionObserver]: Analyzing ICFG dll2n_prepend_unequal.i [2021-12-18 21:56:07,793 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 21:56:07,793 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2021-12-18 21:56:07,824 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 21:56:07,830 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 [2021-12-18 21:56:07,830 INFO L340 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2021-12-18 21:56:07,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 54 states have (on average 2.074074074074074) internal successors, (112), 100 states have internal predecessors, (112), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:07,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-18 21:56:07,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:07,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-18 21:56:07,849 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:07,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:07,854 INFO L85 PathProgramCache]: Analyzing trace with hash 33471376, now seen corresponding path program 1 times [2021-12-18 21:56:07,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:07,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570782637] [2021-12-18 21:56:07,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:07,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:08,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:08,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:08,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570782637] [2021-12-18 21:56:08,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570782637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:08,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:56:08,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 21:56:08,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241723097] [2021-12-18 21:56:08,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:08,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 21:56:08,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:08,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 21:56:08,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 21:56:08,043 INFO L87 Difference]: Start difference. First operand has 102 states, 54 states have (on average 2.074074074074074) internal successors, (112), 100 states have internal predecessors, (112), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:08,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:08,226 INFO L93 Difference]: Finished difference Result 177 states and 192 transitions. [2021-12-18 21:56:08,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 21:56:08,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-18 21:56:08,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:08,235 INFO L225 Difference]: With dead ends: 177 [2021-12-18 21:56:08,235 INFO L226 Difference]: Without dead ends: 170 [2021-12-18 21:56:08,237 INFO L932 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 [2021-12-18 21:56:08,239 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 93 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:08,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 195 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 21:56:08,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-18 21:56:08,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 93. [2021-12-18 21:56:08,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 51 states have (on average 1.9411764705882353) internal successors, (99), 92 states have internal predecessors, (99), 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) [2021-12-18 21:56:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2021-12-18 21:56:08,270 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 5 [2021-12-18 21:56:08,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:08,271 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2021-12-18 21:56:08,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:08,271 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2021-12-18 21:56:08,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-18 21:56:08,272 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:08,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-18 21:56:08,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 21:56:08,273 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:08,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:08,273 INFO L85 PathProgramCache]: Analyzing trace with hash 33471377, now seen corresponding path program 1 times [2021-12-18 21:56:08,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:08,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082066775] [2021-12-18 21:56:08,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:08,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:08,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:08,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:08,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082066775] [2021-12-18 21:56:08,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082066775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:08,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:56:08,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 21:56:08,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744758932] [2021-12-18 21:56:08,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:08,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 21:56:08,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:08,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 21:56:08,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 21:56:08,330 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:08,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:08,449 INFO L93 Difference]: Finished difference Result 169 states and 180 transitions. [2021-12-18 21:56:08,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 21:56:08,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-18 21:56:08,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:08,454 INFO L225 Difference]: With dead ends: 169 [2021-12-18 21:56:08,454 INFO L226 Difference]: Without dead ends: 169 [2021-12-18 21:56:08,459 INFO L932 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 [2021-12-18 21:56:08,461 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 91 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:08,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 189 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 21:56:08,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-18 21:56:08,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 90. [2021-12-18 21:56:08,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 51 states have (on average 1.8823529411764706) internal successors, (96), 89 states have internal predecessors, (96), 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) [2021-12-18 21:56:08,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2021-12-18 21:56:08,474 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 5 [2021-12-18 21:56:08,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:08,475 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2021-12-18 21:56:08,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:08,475 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2021-12-18 21:56:08,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-18 21:56:08,475 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:08,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:08,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 21:56:08,476 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:08,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:08,477 INFO L85 PathProgramCache]: Analyzing trace with hash 2100113040, now seen corresponding path program 1 times [2021-12-18 21:56:08,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:08,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129348367] [2021-12-18 21:56:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:08,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:08,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:08,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:08,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129348367] [2021-12-18 21:56:08,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129348367] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:08,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:56:08,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 21:56:08,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911502414] [2021-12-18 21:56:08,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:08,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 21:56:08,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:08,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 21:56:08,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 21:56:08,520 INFO L87 Difference]: Start difference. First operand 90 states and 96 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2021-12-18 21:56:08,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:08,527 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2021-12-18 21:56:08,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 21:56:08,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2021-12-18 21:56:08,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:08,528 INFO L225 Difference]: With dead ends: 100 [2021-12-18 21:56:08,528 INFO L226 Difference]: Without dead ends: 100 [2021-12-18 21:56:08,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 21:56:08,529 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 10 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:08,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 186 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:56:08,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-12-18 21:56:08,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 91. [2021-12-18 21:56:08,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 90 states have internal predecessors, (97), 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) [2021-12-18 21:56:08,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2021-12-18 21:56:08,537 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 7 [2021-12-18 21:56:08,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:08,537 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2021-12-18 21:56:08,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2021-12-18 21:56:08,537 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2021-12-18 21:56:08,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-18 21:56:08,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:08,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:08,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 21:56:08,538 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:08,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:08,539 INFO L85 PathProgramCache]: Analyzing trace with hash 638916372, now seen corresponding path program 1 times [2021-12-18 21:56:08,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:08,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813729119] [2021-12-18 21:56:08,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:08,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:08,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:08,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813729119] [2021-12-18 21:56:08,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813729119] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:08,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:56:08,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 21:56:08,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686923659] [2021-12-18 21:56:08,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:08,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 21:56:08,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:08,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 21:56:08,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 21:56:08,589 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-12-18 21:56:08,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:08,602 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2021-12-18 21:56:08,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 21:56:08,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2021-12-18 21:56:08,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:08,604 INFO L225 Difference]: With dead ends: 97 [2021-12-18 21:56:08,604 INFO L226 Difference]: Without dead ends: 97 [2021-12-18 21:56:08,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 21:56:08,606 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 1 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:08,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 181 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:56:08,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-12-18 21:56:08,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2021-12-18 21:56:08,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 57 states have (on average 1.7894736842105263) internal successors, (102), 95 states have internal predecessors, (102), 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) [2021-12-18 21:56:08,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2021-12-18 21:56:08,615 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 9 [2021-12-18 21:56:08,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:08,615 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2021-12-18 21:56:08,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-12-18 21:56:08,615 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2021-12-18 21:56:08,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-18 21:56:08,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:08,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:08,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 21:56:08,616 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:08,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:08,617 INFO L85 PathProgramCache]: Analyzing trace with hash -763066913, now seen corresponding path program 1 times [2021-12-18 21:56:08,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:08,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636988371] [2021-12-18 21:56:08,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:08,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:08,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:08,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636988371] [2021-12-18 21:56:08,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636988371] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:56:08,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983594066] [2021-12-18 21:56:08,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:08,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 21:56:08,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 21:56:08,703 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 21:56:08,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 21:56:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:08,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-18 21:56:08,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:56:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:08,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:56:08,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:08,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983594066] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 21:56:08,951 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 21:56:08,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-12-18 21:56:08,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864282479] [2021-12-18 21:56:08,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 21:56:08,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 21:56:08,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:08,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 21:56:08,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-18 21:56:08,953 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:08,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:08,968 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2021-12-18 21:56:08,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 21:56:08,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-18 21:56:08,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:08,969 INFO L225 Difference]: With dead ends: 98 [2021-12-18 21:56:08,973 INFO L226 Difference]: Without dead ends: 98 [2021-12-18 21:56:08,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-18 21:56:08,974 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 16 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:08,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 186 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:56:08,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-12-18 21:56:08,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-12-18 21:56:08,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 59 states have (on average 1.7627118644067796) internal successors, (104), 97 states have internal predecessors, (104), 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) [2021-12-18 21:56:08,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2021-12-18 21:56:08,980 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 14 [2021-12-18 21:56:08,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:08,980 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2021-12-18 21:56:08,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:08,981 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2021-12-18 21:56:08,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-18 21:56:08,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:08,981 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:09,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-18 21:56:09,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 21:56:09,196 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:09,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:09,196 INFO L85 PathProgramCache]: Analyzing trace with hash -2097949021, now seen corresponding path program 1 times [2021-12-18 21:56:09,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:09,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890337602] [2021-12-18 21:56:09,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:09,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:09,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:09,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890337602] [2021-12-18 21:56:09,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890337602] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:56:09,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875947318] [2021-12-18 21:56:09,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:09,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 21:56:09,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 21:56:09,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 21:56:09,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 21:56:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:09,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 21:56:09,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:56:09,483 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 [2021-12-18 21:56:09,532 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-18 21:56:09,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-18 21:56:09,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:09,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:56:09,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:09,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875947318] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 21:56:09,719 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 21:56:09,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 6 [2021-12-18 21:56:09,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948581827] [2021-12-18 21:56:09,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 21:56:09,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 21:56:09,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:09,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 21:56:09,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-18 21:56:09,721 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 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) [2021-12-18 21:56:09,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:09,797 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2021-12-18 21:56:09,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 21:56:09,797 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 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) Word has length 16 [2021-12-18 21:56:09,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:09,798 INFO L225 Difference]: With dead ends: 110 [2021-12-18 21:56:09,798 INFO L226 Difference]: Without dead ends: 110 [2021-12-18 21:56:09,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-18 21:56:09,799 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 93 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:09,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 154 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 54 Unchecked, 0.1s Time] [2021-12-18 21:56:09,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-12-18 21:56:09,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 97. [2021-12-18 21:56:09,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 59 states have (on average 1.7457627118644068) internal successors, (103), 96 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:09,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 103 transitions. [2021-12-18 21:56:09,805 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 103 transitions. Word has length 16 [2021-12-18 21:56:09,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:09,805 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 103 transitions. [2021-12-18 21:56:09,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.0) internal successors, (30), 7 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) [2021-12-18 21:56:09,805 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 103 transitions. [2021-12-18 21:56:09,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-18 21:56:09,806 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:09,806 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:09,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 21:56:10,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-18 21:56:10,025 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:10,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:10,026 INFO L85 PathProgramCache]: Analyzing trace with hash -2097949020, now seen corresponding path program 1 times [2021-12-18 21:56:10,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:10,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632871455] [2021-12-18 21:56:10,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:10,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:10,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:10,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632871455] [2021-12-18 21:56:10,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632871455] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:56:10,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781837243] [2021-12-18 21:56:10,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:10,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 21:56:10,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 21:56:10,144 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 21:56:10,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 21:56:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:10,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-18 21:56:10,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:56:10,271 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 [2021-12-18 21:56:10,278 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 [2021-12-18 21:56:10,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:10,354 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 14 [2021-12-18 21:56:10,364 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 21:56:10,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 21:56:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:10,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:56:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:10,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781837243] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 21:56:10,667 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 21:56:10,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2021-12-18 21:56:10,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229150075] [2021-12-18 21:56:10,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 21:56:10,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 21:56:10,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:10,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 21:56:10,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-18 21:56:10,669 INFO L87 Difference]: Start difference. First operand 97 states and 103 transitions. Second operand has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:10,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:10,802 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2021-12-18 21:56:10,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 21:56:10,803 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-18 21:56:10,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:10,803 INFO L225 Difference]: With dead ends: 108 [2021-12-18 21:56:10,803 INFO L226 Difference]: Without dead ends: 108 [2021-12-18 21:56:10,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-12-18 21:56:10,804 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 201 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:10,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 69 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 118 Invalid, 0 Unknown, 24 Unchecked, 0.1s Time] [2021-12-18 21:56:10,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-18 21:56:10,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 96. [2021-12-18 21:56:10,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 59 states have (on average 1.728813559322034) internal successors, (102), 95 states have internal predecessors, (102), 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) [2021-12-18 21:56:10,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2021-12-18 21:56:10,808 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 16 [2021-12-18 21:56:10,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:10,808 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2021-12-18 21:56:10,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:10,809 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2021-12-18 21:56:10,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-18 21:56:10,809 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:10,809 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:10,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 21:56:11,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 21:56:11,016 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:11,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:11,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1307957328, now seen corresponding path program 2 times [2021-12-18 21:56:11,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:11,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230856592] [2021-12-18 21:56:11,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:11,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:11,069 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:11,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:11,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230856592] [2021-12-18 21:56:11,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230856592] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:56:11,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223025295] [2021-12-18 21:56:11,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 21:56:11,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 21:56:11,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 21:56:11,071 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 21:56:11,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 21:56:11,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 21:56:11,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 21:56:11,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 21:56:11,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:56:11,199 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 [2021-12-18 21:56:11,205 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-18 21:56:11,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:56:11,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223025295] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:11,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 21:56:11,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-12-18 21:56:11,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7740211] [2021-12-18 21:56:11,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:11,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 21:56:11,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:11,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 21:56:11,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 21:56:11,209 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:11,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:11,251 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2021-12-18 21:56:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 21:56:11,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-18 21:56:11,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:11,252 INFO L225 Difference]: With dead ends: 105 [2021-12-18 21:56:11,252 INFO L226 Difference]: Without dead ends: 105 [2021-12-18 21:56:11,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 21:56:11,253 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 73 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:11,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 68 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:56:11,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-18 21:56:11,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 93. [2021-12-18 21:56:11,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 59 states have (on average 1.6779661016949152) internal successors, (99), 92 states have internal predecessors, (99), 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) [2021-12-18 21:56:11,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2021-12-18 21:56:11,257 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 21 [2021-12-18 21:56:11,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:11,257 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2021-12-18 21:56:11,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:11,258 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2021-12-18 21:56:11,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-18 21:56:11,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:11,259 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:11,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 21:56:11,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 21:56:11,482 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:11,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:11,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1307957327, now seen corresponding path program 1 times [2021-12-18 21:56:11,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:11,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161739140] [2021-12-18 21:56:11,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:11,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:11,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:11,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161739140] [2021-12-18 21:56:11,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161739140] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:56:11,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230216944] [2021-12-18 21:56:11,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:11,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 21:56:11,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 21:56:11,521 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 21:56:11,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 21:56:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:11,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-18 21:56:11,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:56:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:11,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:56:11,685 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:11,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230216944] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 21:56:11,686 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 21:56:11,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2021-12-18 21:56:11,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936315914] [2021-12-18 21:56:11,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 21:56:11,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 21:56:11,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:11,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 21:56:11,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 21:56:11,688 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2021-12-18 21:56:11,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:11,711 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2021-12-18 21:56:11,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 21:56:11,711 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) Word has length 21 [2021-12-18 21:56:11,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:11,712 INFO L225 Difference]: With dead ends: 93 [2021-12-18 21:56:11,712 INFO L226 Difference]: Without dead ends: 93 [2021-12-18 21:56:11,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 21:56:11,713 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 165 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:11,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 87 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:56:11,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-18 21:56:11,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-12-18 21:56:11,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 92 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:11,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2021-12-18 21:56:11,717 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 21 [2021-12-18 21:56:11,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:11,717 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2021-12-18 21:56:11,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2021-12-18 21:56:11,717 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2021-12-18 21:56:11,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-18 21:56:11,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:11,718 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:11,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 21:56:11,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 21:56:11,944 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:11,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:11,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2020822092, now seen corresponding path program 1 times [2021-12-18 21:56:11,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:11,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699503329] [2021-12-18 21:56:11,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:11,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:12,008 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-18 21:56:12,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:12,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699503329] [2021-12-18 21:56:12,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699503329] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:12,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:56:12,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 21:56:12,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771759579] [2021-12-18 21:56:12,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:12,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 21:56:12,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:12,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 21:56:12,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 21:56:12,011 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-12-18 21:56:12,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:12,053 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2021-12-18 21:56:12,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 21:56:12,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-18 21:56:12,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:12,054 INFO L225 Difference]: With dead ends: 90 [2021-12-18 21:56:12,054 INFO L226 Difference]: Without dead ends: 90 [2021-12-18 21:56:12,055 INFO L932 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 [2021-12-18 21:56:12,055 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 73 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:12,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 63 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:56:12,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-12-18 21:56:12,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-12-18 21:56:12,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 59 states have (on average 1.6101694915254237) internal successors, (95), 89 states have internal predecessors, (95), 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) [2021-12-18 21:56:12,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2021-12-18 21:56:12,060 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 22 [2021-12-18 21:56:12,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:12,062 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2021-12-18 21:56:12,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-12-18 21:56:12,062 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2021-12-18 21:56:12,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-18 21:56:12,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:12,063 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:12,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 21:56:12,063 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:12,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:12,063 INFO L85 PathProgramCache]: Analyzing trace with hash 157247510, now seen corresponding path program 1 times [2021-12-18 21:56:12,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:12,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155793327] [2021-12-18 21:56:12,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:12,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 21:56:12,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:12,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155793327] [2021-12-18 21:56:12,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155793327] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:56:12,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898315971] [2021-12-18 21:56:12,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:12,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 21:56:12,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 21:56:12,202 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 21:56:12,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 21:56:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:12,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-18 21:56:12,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:56:12,332 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 [2021-12-18 21:56:12,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:12,348 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 14 [2021-12-18 21:56:12,389 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:56:12,390 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 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-18 21:56:12,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:12,453 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 14 [2021-12-18 21:56:12,465 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-18 21:56:12,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:56:12,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898315971] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:12,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 21:56:12,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2021-12-18 21:56:12,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552192592] [2021-12-18 21:56:12,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:12,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 21:56:12,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:12,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 21:56:12,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-18 21:56:12,469 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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) [2021-12-18 21:56:12,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:12,533 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2021-12-18 21:56:12,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 21:56:12,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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) Word has length 27 [2021-12-18 21:56:12,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:12,535 INFO L225 Difference]: With dead ends: 96 [2021-12-18 21:56:12,535 INFO L226 Difference]: Without dead ends: 96 [2021-12-18 21:56:12,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-18 21:56:12,536 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 124 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:12,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 62 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 21:56:12,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-18 21:56:12,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 84. [2021-12-18 21:56:12,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 59 states have (on average 1.5084745762711864) internal successors, (89), 83 states have internal predecessors, (89), 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) [2021-12-18 21:56:12,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2021-12-18 21:56:12,539 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 27 [2021-12-18 21:56:12,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:12,539 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2021-12-18 21:56:12,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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) [2021-12-18 21:56:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2021-12-18 21:56:12,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-18 21:56:12,542 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:12,543 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:12,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 21:56:12,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 21:56:12,756 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:12,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:12,756 INFO L85 PathProgramCache]: Analyzing trace with hash 157247511, now seen corresponding path program 1 times [2021-12-18 21:56:12,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:12,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846858723] [2021-12-18 21:56:12,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:12,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:12,890 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-18 21:56:12,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:12,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846858723] [2021-12-18 21:56:12,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846858723] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:56:12,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496432542] [2021-12-18 21:56:12,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:12,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 21:56:12,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 21:56:12,892 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 21:56:12,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 21:56:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:13,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-18 21:56:13,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:56:13,032 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 [2021-12-18 21:56:13,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:13,055 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 14 [2021-12-18 21:56:13,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:13,117 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 14 [2021-12-18 21:56:13,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:13,189 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 14 [2021-12-18 21:56:13,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-18 21:56:13,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:56:13,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496432542] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:13,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 21:56:13,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2021-12-18 21:56:13,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717167387] [2021-12-18 21:56:13,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:13,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 21:56:13,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:13,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 21:56:13,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-18 21:56:13,224 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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) [2021-12-18 21:56:13,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:13,283 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2021-12-18 21:56:13,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 21:56:13,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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) Word has length 27 [2021-12-18 21:56:13,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:13,285 INFO L225 Difference]: With dead ends: 78 [2021-12-18 21:56:13,285 INFO L226 Difference]: Without dead ends: 78 [2021-12-18 21:56:13,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-18 21:56:13,286 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 115 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:13,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 51 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:56:13,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-18 21:56:13,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-12-18 21:56:13,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 59 states have (on average 1.4067796610169492) internal successors, (83), 77 states have internal predecessors, (83), 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) [2021-12-18 21:56:13,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2021-12-18 21:56:13,288 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 27 [2021-12-18 21:56:13,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:13,289 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2021-12-18 21:56:13,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 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) [2021-12-18 21:56:13,289 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2021-12-18 21:56:13,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-18 21:56:13,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:13,290 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:13,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-18 21:56:13,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 21:56:13,504 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:13,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:13,504 INFO L85 PathProgramCache]: Analyzing trace with hash 579705555, now seen corresponding path program 1 times [2021-12-18 21:56:13,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:13,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29389681] [2021-12-18 21:56:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:13,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:13,546 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-18 21:56:13,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:13,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29389681] [2021-12-18 21:56:13,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29389681] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:13,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:56:13,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 21:56:13,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029129378] [2021-12-18 21:56:13,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:13,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 21:56:13,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:13,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 21:56:13,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 21:56:13,549 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:13,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:13,612 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2021-12-18 21:56:13,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 21:56:13,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-18 21:56:13,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:13,613 INFO L225 Difference]: With dead ends: 89 [2021-12-18 21:56:13,613 INFO L226 Difference]: Without dead ends: 89 [2021-12-18 21:56:13,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-18 21:56:13,614 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 159 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:13,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 88 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 21:56:13,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-18 21:56:13,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 77. [2021-12-18 21:56:13,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 59 states have (on average 1.3898305084745763) internal successors, (82), 76 states have internal predecessors, (82), 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) [2021-12-18 21:56:13,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 82 transitions. [2021-12-18 21:56:13,617 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 82 transitions. Word has length 28 [2021-12-18 21:56:13,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:13,617 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 82 transitions. [2021-12-18 21:56:13,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:13,618 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 82 transitions. [2021-12-18 21:56:13,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-18 21:56:13,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:13,618 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:13,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 21:56:13,619 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:13,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:13,619 INFO L85 PathProgramCache]: Analyzing trace with hash 579705556, now seen corresponding path program 1 times [2021-12-18 21:56:13,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:13,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777783254] [2021-12-18 21:56:13,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:13,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:13,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-18 21:56:13,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:13,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777783254] [2021-12-18 21:56:13,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777783254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:13,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:56:13,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 21:56:13,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215181981] [2021-12-18 21:56:13,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:13,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 21:56:13,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:13,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 21:56:13,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 21:56:13,705 INFO L87 Difference]: Start difference. First operand 77 states and 82 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:13,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:13,771 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2021-12-18 21:56:13,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 21:56:13,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-18 21:56:13,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:13,773 INFO L225 Difference]: With dead ends: 76 [2021-12-18 21:56:13,773 INFO L226 Difference]: Without dead ends: 76 [2021-12-18 21:56:13,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-18 21:56:13,773 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 164 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:13,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 67 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:56:13,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-12-18 21:56:13,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-12-18 21:56:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 75 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:13,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2021-12-18 21:56:13,776 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 28 [2021-12-18 21:56:13,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:13,776 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2021-12-18 21:56:13,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2021-12-18 21:56:13,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-18 21:56:13,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:13,779 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:13,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 21:56:13,779 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:13,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:13,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1569558015, now seen corresponding path program 1 times [2021-12-18 21:56:13,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:13,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918107667] [2021-12-18 21:56:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:13,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-18 21:56:13,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:13,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918107667] [2021-12-18 21:56:13,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918107667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:13,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:56:13,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 21:56:13,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497850661] [2021-12-18 21:56:13,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:13,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 21:56:13,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:13,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 21:56:13,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-18 21:56:13,950 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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) [2021-12-18 21:56:14,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:14,200 INFO L93 Difference]: Finished difference Result 88 states and 94 transitions. [2021-12-18 21:56:14,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 21:56:14,201 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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 33 [2021-12-18 21:56:14,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:14,202 INFO L225 Difference]: With dead ends: 88 [2021-12-18 21:56:14,202 INFO L226 Difference]: Without dead ends: 88 [2021-12-18 21:56:14,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-12-18 21:56:14,203 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 202 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:14,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 164 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 21:56:14,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-12-18 21:56:14,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 75. [2021-12-18 21:56:14,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 74 states have internal predecessors, (80), 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) [2021-12-18 21:56:14,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2021-12-18 21:56:14,205 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 33 [2021-12-18 21:56:14,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:14,205 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2021-12-18 21:56:14,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 12 states have internal predecessors, (31), 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) [2021-12-18 21:56:14,206 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2021-12-18 21:56:14,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-18 21:56:14,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:14,206 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:14,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-18 21:56:14,206 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:14,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:14,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1569558014, now seen corresponding path program 1 times [2021-12-18 21:56:14,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:14,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238957820] [2021-12-18 21:56:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:14,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:14,403 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 21:56:14,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:14,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238957820] [2021-12-18 21:56:14,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238957820] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:14,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:56:14,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 21:56:14,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123604262] [2021-12-18 21:56:14,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:14,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 21:56:14,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:14,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 21:56:14,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-18 21:56:14,405 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 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) [2021-12-18 21:56:14,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:14,695 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2021-12-18 21:56:14,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 21:56:14,696 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 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 33 [2021-12-18 21:56:14,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:14,696 INFO L225 Difference]: With dead ends: 75 [2021-12-18 21:56:14,696 INFO L226 Difference]: Without dead ends: 75 [2021-12-18 21:56:14,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-12-18 21:56:14,697 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 186 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:14,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 162 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 21:56:14,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-18 21:56:14,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2021-12-18 21:56:14,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 59 states have (on average 1.3389830508474576) internal successors, (79), 73 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:14,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2021-12-18 21:56:14,699 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 33 [2021-12-18 21:56:14,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:14,700 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2021-12-18 21:56:14,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.3) internal successors, (33), 11 states have internal predecessors, (33), 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) [2021-12-18 21:56:14,700 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2021-12-18 21:56:14,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-18 21:56:14,700 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:14,700 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:14,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-18 21:56:14,700 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:14,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:14,701 INFO L85 PathProgramCache]: Analyzing trace with hash 873417592, now seen corresponding path program 1 times [2021-12-18 21:56:14,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:14,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960633706] [2021-12-18 21:56:14,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:14,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-18 21:56:14,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:14,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960633706] [2021-12-18 21:56:14,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960633706] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:14,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:56:14,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 21:56:14,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103796150] [2021-12-18 21:56:14,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:14,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 21:56:14,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:14,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 21:56:14,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-18 21:56:14,803 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) [2021-12-18 21:56:14,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:14,952 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2021-12-18 21:56:14,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 21:56:14,953 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) Word has length 36 [2021-12-18 21:56:14,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:14,954 INFO L225 Difference]: With dead ends: 85 [2021-12-18 21:56:14,954 INFO L226 Difference]: Without dead ends: 85 [2021-12-18 21:56:14,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-12-18 21:56:14,954 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 246 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:14,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 151 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 21:56:14,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-18 21:56:14,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 71. [2021-12-18 21:56:14,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 70 states have internal predecessors, (76), 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) [2021-12-18 21:56:14,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2021-12-18 21:56:14,957 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 36 [2021-12-18 21:56:14,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:14,957 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2021-12-18 21:56:14,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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) [2021-12-18 21:56:14,957 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2021-12-18 21:56:14,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-18 21:56:14,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:14,957 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:14,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-18 21:56:14,958 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:14,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:14,958 INFO L85 PathProgramCache]: Analyzing trace with hash 873417593, now seen corresponding path program 1 times [2021-12-18 21:56:14,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:14,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550620674] [2021-12-18 21:56:14,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:14,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:15,071 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-18 21:56:15,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:15,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550620674] [2021-12-18 21:56:15,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550620674] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:15,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:56:15,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 21:56:15,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278296847] [2021-12-18 21:56:15,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:15,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 21:56:15,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:15,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 21:56:15,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-18 21:56:15,074 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 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) [2021-12-18 21:56:15,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:15,245 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2021-12-18 21:56:15,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 21:56:15,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 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) Word has length 36 [2021-12-18 21:56:15,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:15,246 INFO L225 Difference]: With dead ends: 71 [2021-12-18 21:56:15,246 INFO L226 Difference]: Without dead ends: 71 [2021-12-18 21:56:15,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-12-18 21:56:15,247 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 172 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:15,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 138 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 21:56:15,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-12-18 21:56:15,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2021-12-18 21:56:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 68 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:15,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2021-12-18 21:56:15,249 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 36 [2021-12-18 21:56:15,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:15,249 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2021-12-18 21:56:15,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 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) [2021-12-18 21:56:15,249 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2021-12-18 21:56:15,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-18 21:56:15,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:15,250 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:15,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-18 21:56:15,250 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:15,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:15,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1835685655, now seen corresponding path program 1 times [2021-12-18 21:56:15,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:15,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934714943] [2021-12-18 21:56:15,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:15,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:15,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 21:56:15,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:15,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934714943] [2021-12-18 21:56:15,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934714943] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:15,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:56:15,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 21:56:15,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557477719] [2021-12-18 21:56:15,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:15,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 21:56:15,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:15,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 21:56:15,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-18 21:56:15,448 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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) [2021-12-18 21:56:15,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:15,679 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2021-12-18 21:56:15,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 21:56:15,680 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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 38 [2021-12-18 21:56:15,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:15,680 INFO L225 Difference]: With dead ends: 69 [2021-12-18 21:56:15,680 INFO L226 Difference]: Without dead ends: 69 [2021-12-18 21:56:15,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-12-18 21:56:15,681 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 162 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:15,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 180 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 21:56:15,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-12-18 21:56:15,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-12-18 21:56:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 68 states have internal predecessors, (73), 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) [2021-12-18 21:56:15,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2021-12-18 21:56:15,683 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 38 [2021-12-18 21:56:15,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:15,683 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2021-12-18 21:56:15,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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) [2021-12-18 21:56:15,683 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2021-12-18 21:56:15,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-18 21:56:15,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:15,684 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:15,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-18 21:56:15,684 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:15,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:15,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1288796870, now seen corresponding path program 1 times [2021-12-18 21:56:15,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:15,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678486308] [2021-12-18 21:56:15,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:15,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-18 21:56:16,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:16,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678486308] [2021-12-18 21:56:16,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678486308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:16,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:56:16,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-18 21:56:16,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183531382] [2021-12-18 21:56:16,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:16,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-18 21:56:16,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:16,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-18 21:56:16,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-18 21:56:16,017 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:16,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:16,709 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2021-12-18 21:56:16,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-18 21:56:16,710 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-12-18 21:56:16,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:16,710 INFO L225 Difference]: With dead ends: 81 [2021-12-18 21:56:16,710 INFO L226 Difference]: Without dead ends: 81 [2021-12-18 21:56:16,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2021-12-18 21:56:16,712 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 249 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:16,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 248 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 21:56:16,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-18 21:56:16,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 69. [2021-12-18 21:56:16,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 68 states have internal predecessors, (72), 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) [2021-12-18 21:56:16,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2021-12-18 21:56:16,714 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 41 [2021-12-18 21:56:16,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:16,714 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2021-12-18 21:56:16,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:16,714 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2021-12-18 21:56:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-18 21:56:16,715 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:16,715 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:16,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-18 21:56:16,715 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:16,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:16,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1835035530, now seen corresponding path program 1 times [2021-12-18 21:56:16,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:16,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666983042] [2021-12-18 21:56:16,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:16,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-18 21:56:17,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:17,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666983042] [2021-12-18 21:56:17,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666983042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:17,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:56:17,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-18 21:56:17,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712256480] [2021-12-18 21:56:17,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:17,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-18 21:56:17,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:17,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-18 21:56:17,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-12-18 21:56:17,096 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:17,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:17,930 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2021-12-18 21:56:17,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-18 21:56:17,931 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-12-18 21:56:17,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:17,931 INFO L225 Difference]: With dead ends: 101 [2021-12-18 21:56:17,931 INFO L226 Difference]: Without dead ends: 101 [2021-12-18 21:56:17,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2021-12-18 21:56:17,933 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 414 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:17,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 221 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 21:56:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-12-18 21:56:17,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 71. [2021-12-18 21:56:17,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 70 states have internal predecessors, (76), 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) [2021-12-18 21:56:17,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2021-12-18 21:56:17,936 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 44 [2021-12-18 21:56:17,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:17,936 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2021-12-18 21:56:17,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:17,936 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2021-12-18 21:56:17,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-18 21:56:17,937 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:17,937 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:17,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-18 21:56:17,937 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:17,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:17,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1835035531, now seen corresponding path program 1 times [2021-12-18 21:56:17,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:17,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639128867] [2021-12-18 21:56:17,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:17,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:18,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 21:56:18,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:18,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639128867] [2021-12-18 21:56:18,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639128867] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:18,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:56:18,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-18 21:56:18,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711156974] [2021-12-18 21:56:18,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:18,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-18 21:56:18,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:18,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-18 21:56:18,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-12-18 21:56:18,480 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:19,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:19,889 INFO L93 Difference]: Finished difference Result 117 states and 124 transitions. [2021-12-18 21:56:19,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-18 21:56:19,890 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-12-18 21:56:19,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:19,890 INFO L225 Difference]: With dead ends: 117 [2021-12-18 21:56:19,890 INFO L226 Difference]: Without dead ends: 117 [2021-12-18 21:56:19,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=280, Invalid=1052, Unknown=0, NotChecked=0, Total=1332 [2021-12-18 21:56:19,892 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 471 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:19,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 233 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 21:56:19,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-12-18 21:56:19,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 73. [2021-12-18 21:56:19,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 72 states have internal predecessors, (77), 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) [2021-12-18 21:56:19,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-12-18 21:56:19,895 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 44 [2021-12-18 21:56:19,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:19,895 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-12-18 21:56:19,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:19,895 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-12-18 21:56:19,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-18 21:56:19,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:19,896 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:19,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-18 21:56:19,896 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:19,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:19,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1051525325, now seen corresponding path program 1 times [2021-12-18 21:56:19,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:19,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773846491] [2021-12-18 21:56:19,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:19,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 21:56:20,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:20,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773846491] [2021-12-18 21:56:20,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773846491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:56:20,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:56:20,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-12-18 21:56:20,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509067913] [2021-12-18 21:56:20,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:56:20,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-18 21:56:20,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:20,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-18 21:56:20,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2021-12-18 21:56:20,397 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:21,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:21,585 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2021-12-18 21:56:21,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-18 21:56:21,585 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-18 21:56:21,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:21,586 INFO L225 Difference]: With dead ends: 88 [2021-12-18 21:56:21,586 INFO L226 Difference]: Without dead ends: 88 [2021-12-18 21:56:21,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=313, Invalid=1247, Unknown=0, NotChecked=0, Total=1560 [2021-12-18 21:56:21,587 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 308 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:21,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 302 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 21:56:21,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-12-18 21:56:21,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 73. [2021-12-18 21:56:21,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 72 states have internal predecessors, (76), 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) [2021-12-18 21:56:21,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2021-12-18 21:56:21,589 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 45 [2021-12-18 21:56:21,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:21,590 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2021-12-18 21:56:21,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:56:21,590 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2021-12-18 21:56:21,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-18 21:56:21,590 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:21,590 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:21,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-18 21:56:21,590 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:56:21,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:56:21,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1460157775, now seen corresponding path program 1 times [2021-12-18 21:56:21,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:56:21,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216586535] [2021-12-18 21:56:21,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:21,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:56:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:22,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:56:22,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216586535] [2021-12-18 21:56:22,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216586535] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:56:22,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813578616] [2021-12-18 21:56:22,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:56:22,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 21:56:22,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 21:56:22,372 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 21:56:22,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 21:56:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:56:22,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 122 conjunts are in the unsatisfiable core [2021-12-18 21:56:22,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:56:22,598 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 [2021-12-18 21:56:22,644 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:56:22,644 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 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-18 21:56:22,825 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-12-18 21:56:22,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2021-12-18 21:56:22,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 21:56:22,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:22,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-18 21:56:23,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:23,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-18 21:56:23,134 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 14 treesize of output 16 [2021-12-18 21:56:23,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:23,356 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-12-18 21:56:23,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2021-12-18 21:56:23,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:23,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2021-12-18 21:56:23,479 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 18 treesize of output 20 [2021-12-18 21:56:23,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:23,492 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 14 treesize of output 16 [2021-12-18 21:56:23,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:23,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2021-12-18 21:56:23,534 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 18 treesize of output 20 [2021-12-18 21:56:23,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:23,547 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 14 treesize of output 16 [2021-12-18 21:56:23,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:23,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2021-12-18 21:56:23,611 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 18 treesize of output 20 [2021-12-18 21:56:23,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:23,620 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 14 treesize of output 16 [2021-12-18 21:56:23,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:23,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 20 [2021-12-18 21:56:23,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:23,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2021-12-18 21:56:23,915 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 20 treesize of output 22 [2021-12-18 21:56:24,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:24,289 INFO L354 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2021-12-18 21:56:24,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 82 [2021-12-18 21:56:24,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:56:24,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:24,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2021-12-18 21:56:24,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:24,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:24,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:24,308 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 31 treesize of output 34 [2021-12-18 21:56:24,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:24,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 35 [2021-12-18 21:56:24,446 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 24 treesize of output 26 [2021-12-18 21:56:24,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:24,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2021-12-18 21:56:25,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:56:25,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:25,011 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:56:25,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 98 treesize of output 48 [2021-12-18 21:56:25,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:25,022 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-12-18 21:56:25,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 16 [2021-12-18 21:56:25,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 21:56:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:56:25,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:56:25,825 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1833 (Array Int Int)) (v_ArrVal_1829 Int) (v_ArrVal_1830 (Array Int Int)) (v_ArrVal_1828 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_17| Int) (v_ArrVal_1834 Int)) (let ((.cse0 (let ((.cse5 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_#t~mem10#1.base| v_ArrVal_1830))) (store .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| v_ArrVal_1834))))) (or (< |v_ULTIMATE.start_main_~ptr~0#1.offset_17| 0) (< (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) |v_ULTIMATE.start_main_~ptr~0#1.offset_17|) (< |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset| v_ArrVal_1834) (= (let ((.cse1 (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_#t~mem10#1.base| v_ArrVal_1828))) (store .cse4 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse3 (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_17| 4))) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_dll_prepend_#t~mem10#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_prepend_#t~mem10#1.base|) (+ |c_ULTIMATE.start_dll_prepend_#t~mem10#1.offset| 8) v_ArrVal_1829)) |c_ULTIMATE.start_dll_prepend_~head#1.base| v_ArrVal_1833) (select (select .cse1 .cse2) .cse3)) (select (select .cse0 .cse2) .cse3)))) |c_ULTIMATE.start_main_~data~0#1|)))) is different from false [2021-12-18 21:56:25,951 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1833 (Array Int Int)) (v_ArrVal_1829 Int) (v_ArrVal_1830 (Array Int Int)) (|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_9| Int) (v_ArrVal_1828 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_17| Int) (v_ArrVal_1834 Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse4 (let ((.cse6 (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_1830))) (store .cse6 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse6 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| v_ArrVal_1834))))) (or (= (let ((.cse1 (let ((.cse5 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_1828))) (store .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse3 (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_17| 4))) (select (select (store (store |c_#memory_int| .cse0 (store (select |c_#memory_int| .cse0) (+ |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_9| 8) v_ArrVal_1829)) |c_ULTIMATE.start_dll_prepend_~head#1.base| v_ArrVal_1833) (select (select .cse1 .cse2) .cse3)) (select (select .cse4 .cse2) .cse3)))) |c_ULTIMATE.start_main_~data~0#1|) (< |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_9| (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_17| 0) (< |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset| v_ArrVal_1834) (< (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) |v_ULTIMATE.start_main_~ptr~0#1.offset_17|))))) is different from false [2021-12-18 21:56:26,462 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1833 (Array Int Int)) (v_ArrVal_1829 Int) (v_ArrVal_1830 (Array Int Int)) (|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_9| Int) (v_ArrVal_1828 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_17| Int) (v_ArrVal_1826 (Array Int Int)) (v_ArrVal_1834 Int)) (let ((.cse10 (+ |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset| 4))) (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|) .cse10 |c_ULTIMATE.start_dll_prepend_#t~mem8#1.base|)))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|) .cse10 |c_ULTIMATE.start_dll_prepend_#t~mem8#1.offset|))) (.cse3 (select (select .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse0 (let ((.cse9 (store .cse1 .cse3 v_ArrVal_1830))) (store .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| v_ArrVal_1834))))) (or (< (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) |v_ULTIMATE.start_main_~ptr~0#1.offset_17|) (< |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_9| (select (select .cse1 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_17| 0) (< |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset| v_ArrVal_1834) (= (let ((.cse4 (let ((.cse7 (store .cse8 .cse3 v_ArrVal_1828))) (store .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse6 (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_17| 4))) (select (select (store (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base| v_ArrVal_1826))) (store .cse2 .cse3 (store (select .cse2 .cse3) (+ |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_9| 8) v_ArrVal_1829))) |c_ULTIMATE.start_dll_prepend_~head#1.base| v_ArrVal_1833) (select (select .cse4 .cse5) .cse6)) (select (select .cse0 .cse5) .cse6)))) |c_ULTIMATE.start_main_~data~0#1|))))))) is different from false [2021-12-18 21:56:27,366 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1833 (Array Int Int)) (v_ArrVal_1829 Int) (v_ArrVal_1830 (Array Int Int)) (|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_9| Int) (v_ArrVal_1828 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_17| Int) (|v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_9| Int) (v_ArrVal_1826 (Array Int Int)) (v_ArrVal_1834 Int)) (let ((.cse10 (+ |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_9| 4))) (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_#res#1.base|) .cse10 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_#res#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_#res#1.base|) .cse10 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))) (.cse3 (select (select .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse0 (let ((.cse9 (store .cse1 .cse3 v_ArrVal_1830))) (store .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| v_ArrVal_1834))))) (or (< |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_9| v_ArrVal_1834) (< |c_ULTIMATE.start_node_create_#res#1.offset| |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_9|) (< (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) |v_ULTIMATE.start_main_~ptr~0#1.offset_17|) (< |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_9| (select (select .cse1 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_17| 0) (= (let ((.cse4 (let ((.cse7 (store .cse8 .cse3 v_ArrVal_1828))) (store .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_#res#1.base|))))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse6 (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_17| 4))) (select (select (store (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_node_create_#res#1.base| v_ArrVal_1826))) (store .cse2 .cse3 (store (select .cse2 .cse3) (+ |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_9| 8) v_ArrVal_1829))) |c_ULTIMATE.start_dll_prepend_~head#1.base| v_ArrVal_1833) (select (select .cse4 .cse5) .cse6)) (select (select .cse0 .cse5) .cse6)))) |c_ULTIMATE.start_main_~data~0#1|))))))) is different from false [2021-12-18 21:56:27,701 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1833 (Array Int Int)) (v_ArrVal_1829 Int) (v_ArrVal_1830 (Array Int Int)) (|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_9| Int) (v_ArrVal_1828 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_17| Int) (|v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_9| Int) (v_ArrVal_1826 (Array Int Int)) (v_ArrVal_1834 Int)) (let ((.cse10 (+ |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_9| 4))) (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse10 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|) .cse10 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))) (.cse3 (select (select .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse0 (let ((.cse9 (store .cse1 .cse3 v_ArrVal_1830))) (store .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| v_ArrVal_1834))))) (or (< |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_9| v_ArrVal_1834) (< (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) |v_ULTIMATE.start_main_~ptr~0#1.offset_17|) (< |c_ULTIMATE.start_node_create_~temp~0#1.offset| |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_9|) (< |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_9| (select (select .cse1 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_17| 0) (= (let ((.cse4 (let ((.cse7 (store .cse8 .cse3 v_ArrVal_1828))) (store .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|))))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse6 (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_17| 4))) (select (select (store (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1826))) (store .cse2 .cse3 (store (select .cse2 .cse3) (+ |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_9| 8) v_ArrVal_1829))) |c_ULTIMATE.start_dll_prepend_~head#1.base| v_ArrVal_1833) (select (select .cse4 .cse5) .cse6)) (select (select .cse0 .cse5) .cse6)))) |c_ULTIMATE.start_main_~data~0#1|))))))) is different from false [2021-12-18 21:56:28,260 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1833 (Array Int Int)) (v_ArrVal_1821 (Array Int Int)) (v_ArrVal_1820 (Array Int Int)) (v_ArrVal_1829 Int) (v_ArrVal_1830 (Array Int Int)) (|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_9| Int) (v_ArrVal_1828 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_17| Int) (|v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_9| Int) (v_ArrVal_1826 (Array Int Int)) (v_ArrVal_1834 Int)) (let ((.cse10 (+ |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_9| 4))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store v_ArrVal_1821 .cse10 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1821) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))))) (let ((.cse8 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| (store v_ArrVal_1820 .cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1820) |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))) (.cse1 (select (select .cse7 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse5 (let ((.cse9 (store .cse8 .cse1 v_ArrVal_1830))) (store .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse9 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| v_ArrVal_1834))))) (or (< |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_9| v_ArrVal_1834) (= (let ((.cse2 (let ((.cse6 (store .cse7 .cse1 v_ArrVal_1828))) (store .cse6 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse6 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_node_create_~temp~0#1.base|))))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse4 (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_17| 4))) (select (select (store (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_node_create_~temp~0#1.base| v_ArrVal_1826))) (store .cse0 .cse1 (store (select .cse0 .cse1) (+ |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_9| 8) v_ArrVal_1829))) |c_ULTIMATE.start_dll_prepend_~head#1.base| v_ArrVal_1833) (select (select .cse2 .cse3) .cse4)) (select (select .cse5 .cse3) .cse4)))) |c_ULTIMATE.start_main_~data~0#1|) (< |c_ULTIMATE.start_node_create_~temp~0#1.offset| |v_ULTIMATE.start_dll_prepend_~new_head~1#1.offset_9|) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_17| 0) (< (select (select .cse5 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) |v_ULTIMATE.start_main_~ptr~0#1.offset_17|) (< |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_9| (select (select .cse8 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)))))))) is different from false [2021-12-18 21:56:29,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15346 treesize of output 14300 [2021-12-18 21:56:29,759 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:56:29,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15552 treesize of output 14412 [2021-12-18 21:56:29,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17234 treesize of output 17010 [2021-12-18 21:56:30,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 656534 treesize of output 646896 [2021-12-18 21:56:31,209 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:56:31,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 719772 treesize of output 706992 [2021-12-18 21:56:32,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:32,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 723778 treesize of output 689170 [2021-12-18 21:56:34,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 797506 treesize of output 772258 [2021-12-18 21:56:35,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:56:35,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 797427 treesize of output 794111 [2021-12-18 21:56:58,204 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-12-18 21:56:58,204 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-18 21:56:58,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-12-18 21:56:58,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237628191] [2021-12-18 21:56:58,205 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-18 21:56:58,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-18 21:56:58,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 21:56:58,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-18 21:56:58,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2491, Unknown=9, NotChecked=630, Total=3306 [2021-12-18 21:56:58,207 INFO L87 Difference]: Start difference. First operand 73 states and 76 transitions. Second operand has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 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) [2021-12-18 21:56:59,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:56:59,955 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2021-12-18 21:56:59,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-18 21:56:59,956 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 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 48 [2021-12-18 21:56:59,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:56:59,956 INFO L225 Difference]: With dead ends: 93 [2021-12-18 21:56:59,956 INFO L226 Difference]: Without dead ends: 93 [2021-12-18 21:56:59,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 39 SyntacticMatches, 8 SemanticMatches, 78 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1213 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=444, Invalid=4973, Unknown=9, NotChecked=894, Total=6320 [2021-12-18 21:56:59,958 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 244 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 21:56:59,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 365 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 21:56:59,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-18 21:56:59,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2021-12-18 21:56:59,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 64 states have (on average 1.203125) internal successors, (77), 73 states have internal predecessors, (77), 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) [2021-12-18 21:56:59,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2021-12-18 21:56:59,961 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 48 [2021-12-18 21:56:59,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:56:59,961 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2021-12-18 21:56:59,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 23 states have internal predecessors, (48), 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) [2021-12-18 21:56:59,962 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2021-12-18 21:56:59,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-18 21:56:59,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:56:59,962 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:56:59,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-18 21:57:00,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-18 21:57:00,180 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 41 more)] === [2021-12-18 21:57:00,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:57:00,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1979749756, now seen corresponding path program 1 times [2021-12-18 21:57:00,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 21:57:00,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845342777] [2021-12-18 21:57:00,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:57:00,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 21:57:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:57:01,020 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:57:01,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 21:57:01,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845342777] [2021-12-18 21:57:01,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845342777] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 21:57:01,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673482713] [2021-12-18 21:57:01,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:57:01,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 21:57:01,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 21:57:01,028 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 21:57:01,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-18 21:57:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:57:01,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 108 conjunts are in the unsatisfiable core [2021-12-18 21:57:01,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:57:01,224 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 [2021-12-18 21:57:01,264 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:57:01,264 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 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-18 21:57:01,402 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-12-18 21:57:01,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2021-12-18 21:57:01,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 21:57:01,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:57:01,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2021-12-18 21:57:01,638 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 21:57:01,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2021-12-18 21:57:01,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:57:01,929 INFO L354 Elim1Store]: treesize reduction 96, result has 32.9 percent of original size [2021-12-18 21:57:01,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 41 treesize of output 69 [2021-12-18 21:57:02,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:57:02,078 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-18 21:57:02,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 67 [2021-12-18 21:57:02,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:57:02,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:57:02,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:57:02,171 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-18 21:57:02,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 67 [2021-12-18 21:57:02,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:57:02,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:57:02,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:57:02,261 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-12-18 21:57:02,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 67 [2021-12-18 21:57:02,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:57:02,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 21:57:02,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:57:02,677 INFO L354 Elim1Store]: treesize reduction 63, result has 12.5 percent of original size [2021-12-18 21:57:02,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 55 [2021-12-18 21:57:02,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:57:02,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2021-12-18 21:57:03,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:57:03,185 INFO L354 Elim1Store]: treesize reduction 134, result has 19.3 percent of original size [2021-12-18 21:57:03,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 117 treesize of output 82 [2021-12-18 21:57:03,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:57:03,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 39 [2021-12-18 21:57:03,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:57:03,620 INFO L354 Elim1Store]: treesize reduction 61, result has 12.9 percent of original size [2021-12-18 21:57:03,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 62 [2021-12-18 21:57:03,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:57:03,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 52 [2021-12-18 21:57:06,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:57:06,469 INFO L354 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-12-18 21:57:06,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 42 [2021-12-18 21:57:09,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:57:09,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:57:09,143 INFO L354 Elim1Store]: treesize reduction 100, result has 10.7 percent of original size [2021-12-18 21:57:09,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 136 treesize of output 68 [2021-12-18 21:57:10,055 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:57:10,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 21:57:11,068 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2032 Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_20| Int) (v_ArrVal_2028 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_21| Int) (v_ArrVal_2029 Int)) (let ((.cse0 (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_#t~mem10#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_#t~mem10#1.base|) (+ |c_ULTIMATE.start_dll_prepend_#t~mem10#1.offset| 8) v_ArrVal_2029)))) (store .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse5 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_21| 4)) (.cse3 (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_#t~mem10#1.base| v_ArrVal_2028))) (store .cse4 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| v_ArrVal_2032))))) (or (< |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset| v_ArrVal_2032) (= (select |c_#valid| (select (select .cse0 (select (select .cse0 .cse1) .cse2)) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_20| 4))) 1) (< (select (select .cse3 .cse1) .cse2) |v_ULTIMATE.start_main_~ptr~0#1.offset_20|) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_21| 0) (<= (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_20| 1) 0) (< (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) |v_ULTIMATE.start_main_~ptr~0#1.offset_21|))))) is different from false [2021-12-18 21:57:11,189 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2032 Int) (|v_ULTIMATE.start_main_~ptr~0#1.offset_20| Int) (v_ArrVal_2028 (Array Int Int)) (|v_ULTIMATE.start_main_~ptr~0#1.offset_21| Int) (|v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_12| Int) (v_ArrVal_2029 Int)) (let ((.cse5 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|))) (let ((.cse1 (let ((.cse6 (store |c_#memory_$Pointer$.base| .cse5 (store (select |c_#memory_$Pointer$.base| .cse5) (+ |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_12| 8) v_ArrVal_2029)))) (store .cse6 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse6 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| |c_ULTIMATE.start_dll_prepend_~new_head~1#1.base|))))) (let ((.cse0 (let ((.cse4 (store |c_#memory_$Pointer$.offset| .cse5 v_ArrVal_2028))) (store .cse4 |c_ULTIMATE.start_dll_prepend_~head#1.base| (store (select .cse4 |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset| v_ArrVal_2032)))) (.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse3 (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_21| 4))) (or (< |c_ULTIMATE.start_dll_prepend_~new_head~1#1.offset| v_ArrVal_2032) (< (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) |v_ULTIMATE.start_main_~ptr~0#1.offset_21|) (= (select |c_#valid| (select (select .cse1 (select (select .cse1 .cse2) .cse3)) (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_20| 4))) 1) (< |v_ULTIMATE.start_dll_prepend_#t~mem10#1.offset_12| (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_prepend_~head#1.base|) |c_ULTIMATE.start_dll_prepend_~head#1.offset|)) (< (select (select .cse0 .cse2) .cse3) |v_ULTIMATE.start_main_~ptr~0#1.offset_20|) (< |v_ULTIMATE.start_main_~ptr~0#1.offset_21| 0) (<= (+ |v_ULTIMATE.start_main_~ptr~0#1.offset_20| 1) 0)))))) is different from false [2021-12-18 21:57:19,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 602 treesize of output 592 [2021-12-18 21:57:19,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 21:57:19,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 553 treesize of output 549 [2021-12-18 21:57:19,827 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:57:19,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 303 treesize of output 299 [2021-12-18 21:57:19,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 594 treesize of output 562 [2021-12-18 21:57:28,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:57:28,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:57:28,026 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:57:28,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 97 [2021-12-18 21:57:35,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:57:35,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:57:35,085 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:57:35,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 97 [2021-12-18 21:57:36,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:57:36,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:57:36,597 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:57:36,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 97 [2021-12-18 21:57:36,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:57:36,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:57:37,003 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:57:37,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 97 [2021-12-18 21:57:44,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:57:44,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:57:44,872 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:57:44,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 97 [2021-12-18 21:57:50,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:57:51,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:57:51,010 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:57:51,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 97 [2021-12-18 21:57:55,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:57:55,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:57:55,178 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:57:55,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 97 [2021-12-18 21:57:55,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:57:55,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:57:55,422 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:57:55,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 97 [2021-12-18 21:58:00,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:00,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:00,749 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:58:00,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 97 [2021-12-18 21:58:04,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:04,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:04,359 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:58:04,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 97 [2021-12-18 21:58:05,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:05,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:05,138 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:58:05,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 97 [2021-12-18 21:58:10,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:10,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:10,313 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:58:10,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 97 [2021-12-18 21:58:17,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:17,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:17,213 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:58:17,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 97 [2021-12-18 21:58:18,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:19,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:19,008 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:58:19,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 97 [2021-12-18 21:58:19,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:19,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:19,119 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:58:19,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 139 treesize of output 97 [2021-12-18 21:58:26,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:26,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:26,768 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:58:26,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 115 [2021-12-18 21:58:31,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:31,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:31,037 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:58:31,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 115 [2021-12-18 21:58:31,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:31,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:31,933 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:58:31,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 115 [2021-12-18 21:58:39,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:39,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:39,457 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:58:39,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 115 [2021-12-18 21:58:45,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:45,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:45,753 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:58:45,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 115 [2021-12-18 21:58:46,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:46,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:46,057 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:58:46,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 115 [2021-12-18 21:58:55,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:55,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:55,085 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:58:55,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 217 treesize of output 175 [2021-12-18 21:58:57,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:57,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:57,484 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:58:57,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 217 treesize of output 175 [2021-12-18 21:58:57,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:57,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:58:57,678 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 21:58:57,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 217 treesize of output 175 [2021-12-18 21:58:59,509 INFO L354 Elim1Store]: treesize reduction 27, result has 43.8 percent of original size [2021-12-18 21:58:59,509 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 1159 treesize of output 594 [2021-12-18 21:58:59,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 21:59:35,247 WARN L227 SmtUtils]: Spent 28.32s on a formula simplification. DAG size of input: 2204 DAG size of output: 384 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-18 21:59:35,248 INFO L354 Elim1Store]: treesize reduction 8396, result has 12.6 percent of original size [2021-12-18 21:59:35,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 33 select indices, 33 select index equivalence classes, 0 disjoint index pairs (out of 528 index pairs), introduced 50 new quantified variables, introduced 528 case distinctions, treesize of input 2917437952 treesize of output 2707182335 Killed by 15