/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 06:47:07,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 06:47:07,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 06:47:07,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 06:47:07,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 06:47:07,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 06:47:07,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 06:47:07,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 06:47:07,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 06:47:07,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 06:47:07,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 06:47:07,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 06:47:07,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 06:47:07,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 06:47:07,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 06:47:07,421 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 06:47:07,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 06:47:07,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 06:47:07,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 06:47:07,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 06:47:07,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 06:47:07,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 06:47:07,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 06:47:07,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 06:47:07,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 06:47:07,453 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 06:47:07,454 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 06:47:07,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 06:47:07,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 06:47:07,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 06:47:07,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 06:47:07,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 06:47:07,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 06:47:07,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 06:47:07,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 06:47:07,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 06:47:07,461 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 06:47:07,478 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 06:47:07,478 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 06:47:07,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 06:47:07,482 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 06:47:07,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 06:47:07,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 06:47:07,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 06:47:07,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 06:47:07,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 06:47:07,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 06:47:07,483 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 06:47:07,484 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 06:47:07,484 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 06:47:07,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 06:47:07,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 06:47:07,485 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 06:47:07,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 06:47:07,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 06:47:07,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 06:47:07,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 06:47:07,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 06:47:07,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 06:47:07,485 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 06:47:07,486 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 06:47:07,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 06:47:07,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 06:47:07,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 06:47:07,878 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 06:47:07,878 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 06:47:07,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i [2021-04-16 06:47:07,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d271b07d5/3c738b35fe714da4ab3f2c85f99965ff/FLAG179d880f8 [2021-04-16 06:47:08,379 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 06:47:08,379 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i [2021-04-16 06:47:08,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d271b07d5/3c738b35fe714da4ab3f2c85f99965ff/FLAG179d880f8 [2021-04-16 06:47:08,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d271b07d5/3c738b35fe714da4ab3f2c85f99965ff [2021-04-16 06:47:08,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 06:47:08,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 06:47:08,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 06:47:08,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 06:47:08,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 06:47:08,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:47:08" (1/1) ... [2021-04-16 06:47:08,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79b49343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:08, skipping insertion in model container [2021-04-16 06:47:08,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:47:08" (1/1) ... [2021-04-16 06:47:08,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 06:47:08,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 06:47:08,927 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i[825,838] [2021-04-16 06:47:08,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:47:08,948 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 06:47:08,958 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i[825,838] [2021-04-16 06:47:08,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:47:09,008 INFO L208 MainTranslator]: Completed translation [2021-04-16 06:47:09,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:09 WrapperNode [2021-04-16 06:47:09,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 06:47:09,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 06:47:09,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 06:47:09,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 06:47:09,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:09" (1/1) ... [2021-04-16 06:47:09,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:09" (1/1) ... [2021-04-16 06:47:09,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:09" (1/1) ... [2021-04-16 06:47:09,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:09" (1/1) ... [2021-04-16 06:47:09,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:09" (1/1) ... [2021-04-16 06:47:09,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:09" (1/1) ... [2021-04-16 06:47:09,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:09" (1/1) ... [2021-04-16 06:47:09,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 06:47:09,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 06:47:09,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 06:47:09,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 06:47:09,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 06:47:09,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 06:47:09,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 06:47:09,139 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 06:47:09,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 06:47:09,139 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2 [2021-04-16 06:47:09,139 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 06:47:09,139 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 06:47:09,140 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 06:47:09,140 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-04-16 06:47:09,140 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-04-16 06:47:09,140 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 06:47:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 06:47:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 06:47:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure glob2 [2021-04-16 06:47:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 06:47:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 06:47:09,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 06:47:09,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 06:47:09,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 06:47:09,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 06:47:09,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 06:47:09,460 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 06:47:09,460 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 06:47:09,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:47:09 BoogieIcfgContainer [2021-04-16 06:47:09,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 06:47:09,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 06:47:09,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 06:47:09,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 06:47:09,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 06:47:08" (1/3) ... [2021-04-16 06:47:09,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af3f706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:47:09, skipping insertion in model container [2021-04-16 06:47:09,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:47:09" (2/3) ... [2021-04-16 06:47:09,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af3f706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:47:09, skipping insertion in model container [2021-04-16 06:47:09,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:47:09" (3/3) ... [2021-04-16 06:47:09,468 INFO L111 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i [2021-04-16 06:47:09,472 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 06:47:09,475 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 06:47:09,489 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 06:47:09,522 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 06:47:09,522 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 06:47:09,522 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 06:47:09,522 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 06:47:09,522 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 06:47:09,522 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 06:47:09,522 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 06:47:09,523 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 06:47:09,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-04-16 06:47:09,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-04-16 06:47:09,541 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:09,542 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:09,542 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:09,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:09,550 INFO L82 PathProgramCache]: Analyzing trace with hash 49640583, now seen corresponding path program 1 times [2021-04-16 06:47:09,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:09,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815998182] [2021-04-16 06:47:09,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:09,623 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:09,782 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:09,783 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:09,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:09,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:47:09,807 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:09,808 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:09,819 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:09,820 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:09,833 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:09,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:09,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:09,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:09,850 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:09,851 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:09,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:09,892 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:09,893 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:09,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:09,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815998182] [2021-04-16 06:47:09,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:09,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-04-16 06:47:09,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884751707] [2021-04-16 06:47:09,901 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-04-16 06:47:09,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:09,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-04-16 06:47:09,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-04-16 06:47:09,914 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:10,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:10,288 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2021-04-16 06:47:10,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-16 06:47:10,290 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-04-16 06:47:10,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:10,295 INFO L225 Difference]: With dead ends: 55 [2021-04-16 06:47:10,295 INFO L226 Difference]: Without dead ends: 26 [2021-04-16 06:47:10,313 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 262.6ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-04-16 06:47:10,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-04-16 06:47:10,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2021-04-16 06:47:10,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:47:10,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-04-16 06:47:10,364 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 13 [2021-04-16 06:47:10,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:10,364 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-04-16 06:47:10,364 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:47:10,364 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-04-16 06:47:10,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-04-16 06:47:10,365 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:10,365 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:10,365 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 06:47:10,365 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:10,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:10,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1781648093, now seen corresponding path program 1 times [2021-04-16 06:47:10,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:10,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834741511] [2021-04-16 06:47:10,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:10,392 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:10,398 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:10,474 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:10,474 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:10,480 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:10,482 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 06:47:10,493 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:10,494 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:10,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:10,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 06:47:10,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:10,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:10,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:10,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:10,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:10,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:10,534 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:10,535 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:10,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:10,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:10,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:10,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-04-16 06:47:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:10,574 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:10,574 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:10,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:10,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834741511] [2021-04-16 06:47:10,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:10,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-16 06:47:10,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273901373] [2021-04-16 06:47:10,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-16 06:47:10,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:10,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-16 06:47:10,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:47:10,577 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:47:10,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:10,910 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-04-16 06:47:10,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-04-16 06:47:10,912 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2021-04-16 06:47:10,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:10,914 INFO L225 Difference]: With dead ends: 36 [2021-04-16 06:47:10,915 INFO L226 Difference]: Without dead ends: 34 [2021-04-16 06:47:10,917 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 250.2ms TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-04-16 06:47:10,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-04-16 06:47:10,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-04-16 06:47:10,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 22 states have internal predecessors, (22), 6 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-04-16 06:47:10,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-04-16 06:47:10,939 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 21 [2021-04-16 06:47:10,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:10,940 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-04-16 06:47:10,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:47:10,940 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-04-16 06:47:10,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-04-16 06:47:10,941 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:47:10,942 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:47:10,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 06:47:10,942 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:47:10,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:47:10,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1581946061, now seen corresponding path program 2 times [2021-04-16 06:47:10,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:47:10,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874098950] [2021-04-16 06:47:10,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:47:10,953 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-04-16 06:47:10,955 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:47:10,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:11,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:11,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:11,003 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:11,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:11,009 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:11,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:11,016 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:11,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:11,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:11,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:11,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:11,027 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:11,028 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:11,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:47:11,040 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:11,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:11,052 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:11,053 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:47:11,063 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:11,063 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:11,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:47:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:11,107 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:11,108 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:11,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-04-16 06:47:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:11,121 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:11,122 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:11,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-04-16 06:47:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:47:11,127 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:47:11,128 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:47:11,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:47:11,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1874098950] [2021-04-16 06:47:11,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:47:11,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-04-16 06:47:11,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248613790] [2021-04-16 06:47:11,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-04-16 06:47:11,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:47:11,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-04-16 06:47:11,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:47:11,130 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:47:11,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:47:11,353 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-04-16 06:47:11,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-04-16 06:47:11,354 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2021-04-16 06:47:11,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:47:11,354 INFO L225 Difference]: With dead ends: 32 [2021-04-16 06:47:11,355 INFO L226 Difference]: Without dead ends: 0 [2021-04-16 06:47:11,355 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 217.7ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-04-16 06:47:11,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-16 06:47:11,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-16 06:47:11,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-16 06:47:11,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-16 06:47:11,356 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-04-16 06:47:11,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:47:11,356 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-16 06:47:11,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 4 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 06:47:11,356 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-16 06:47:11,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-16 06:47:11,357 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-16 06:47:11,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-04-16 06:47:11,785 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-04-16 06:47:11,785 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-04-16 06:47:11,785 INFO L198 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-04-16 06:47:11,785 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-04-16 06:47:11,785 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= ~tmp~0.base |old(~tmp~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~tmp~0.offset |old(~tmp~0.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-04-16 06:47:11,785 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-04-16 06:47:11,786 INFO L194 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (or (not (<= |glob2_#in~pathlim.offset| ~tmp~0.offset)) (and (<= glob2_~p~0.offset ~tmp~0.offset) (<= glob2_~pathlim.offset ~tmp~0.offset) (= ~tmp~0.base glob2_~p~0.base)) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (not (= |glob2_#in~pathbuf.offset| 0)) (not (<= 4 ~tmp~0.offset))) [2021-04-16 06:47:11,786 INFO L201 CegarLoopUtils]: At program point glob2ENTRY(lines 25 36) the Hoare annotation is: true [2021-04-16 06:47:11,786 INFO L194 CegarLoopUtils]: At program point L31-1(line 31) the Hoare annotation is: (or (not (<= |glob2_#in~pathlim.offset| ~tmp~0.offset)) (and (<= glob2_~p~0.offset ~tmp~0.offset) (<= glob2_~pathlim.offset ~tmp~0.offset) (= ~tmp~0.base glob2_~p~0.base)) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (not (= |glob2_#in~pathbuf.offset| 0)) (not (<= 4 ~tmp~0.offset))) [2021-04-16 06:47:11,786 INFO L194 CegarLoopUtils]: At program point L29-2(lines 29 33) the Hoare annotation is: (or (not (<= |glob2_#in~pathlim.offset| ~tmp~0.offset)) (and (<= glob2_~p~0.offset ~tmp~0.offset) (<= glob2_~pathlim.offset ~tmp~0.offset) (= ~tmp~0.base glob2_~p~0.base)) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (not (= |glob2_#in~pathbuf.offset| 0)) (not (<= 4 ~tmp~0.offset))) [2021-04-16 06:47:11,786 INFO L194 CegarLoopUtils]: At program point L29-3(lines 29 33) the Hoare annotation is: (or (not (<= |glob2_#in~pathlim.offset| ~tmp~0.offset)) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (not (= |glob2_#in~pathbuf.offset| 0)) (and (<= glob2_~pathlim.offset ~tmp~0.offset) (= ~tmp~0.base glob2_~p~0.base)) (not (<= 4 ~tmp~0.offset))) [2021-04-16 06:47:11,786 INFO L201 CegarLoopUtils]: At program point L29-4(lines 29 33) the Hoare annotation is: true [2021-04-16 06:47:11,786 INFO L201 CegarLoopUtils]: At program point glob2EXIT(lines 25 36) the Hoare annotation is: true [2021-04-16 06:47:11,787 INFO L201 CegarLoopUtils]: At program point glob2FINAL(lines 25 36) the Hoare annotation is: true [2021-04-16 06:47:11,787 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-04-16 06:47:11,787 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-04-16 06:47:11,787 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-04-16 06:47:11,787 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-04-16 06:47:11,787 INFO L194 CegarLoopUtils]: At program point L46(line 46) the Hoare annotation is: (and (<= (+ |main_~#pathbuf~0.offset| 4) ~tmp~0.offset) (<= main_~bound~0.offset ~tmp~0.offset) (= ~tmp~0.base |main_~#pathbuf~0.base|) (= |main_~#pathbuf~0.offset| 0)) [2021-04-16 06:47:11,787 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 38 49) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(~tmp~0.base)| ~tmp~0.base) (= ~tmp~0.offset |old(~tmp~0.offset)|) (= |old(#valid)| |#valid|)) [2021-04-16 06:47:11,787 INFO L194 CegarLoopUtils]: At program point L46-1(line 46) the Hoare annotation is: (and (<= (+ |main_~#pathbuf~0.offset| 4) ~tmp~0.offset) (= ~tmp~0.base |main_~#pathbuf~0.base|) (= |main_~#pathbuf~0.offset| 0)) [2021-04-16 06:47:11,787 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 38 49) the Hoare annotation is: true [2021-04-16 06:47:11,788 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 38 49) the Hoare annotation is: true [2021-04-16 06:47:11,788 INFO L194 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-04-16 06:47:11,788 INFO L194 CegarLoopUtils]: At program point L15(lines 15 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-04-16 06:47:11,788 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 14 19) the Hoare annotation is: true [2021-04-16 06:47:11,788 INFO L194 CegarLoopUtils]: At program point L15-2(lines 14 19) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-04-16 06:47:11,788 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 14 19) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-04-16 06:47:11,788 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-04-16 06:47:11,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 06:47:11 BoogieIcfgContainer [2021-04-16 06:47:11,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 06:47:11,804 INFO L168 Benchmark]: Toolchain (without parser) took 3024.64 ms. Allocated memory was 176.2 MB in the beginning and 229.6 MB in the end (delta: 53.5 MB). Free memory was 142.2 MB in the beginning and 152.9 MB in the end (delta: -10.7 MB). Peak memory consumption was 95.9 MB. Max. memory is 8.0 GB. [2021-04-16 06:47:11,804 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 176.2 MB. Free memory was 159.1 MB in the beginning and 159.0 MB in the end (delta: 113.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 06:47:11,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.54 ms. Allocated memory is still 176.2 MB. Free memory was 142.0 MB in the beginning and 159.9 MB in the end (delta: -17.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. [2021-04-16 06:47:11,805 INFO L168 Benchmark]: Boogie Preprocessor took 48.01 ms. Allocated memory is still 176.2 MB. Free memory was 159.9 MB in the beginning and 158.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-04-16 06:47:11,806 INFO L168 Benchmark]: RCFGBuilder took 398.57 ms. Allocated memory is still 176.2 MB. Free memory was 158.3 MB in the beginning and 143.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-04-16 06:47:11,806 INFO L168 Benchmark]: TraceAbstraction took 2340.22 ms. Allocated memory was 176.2 MB in the beginning and 229.6 MB in the end (delta: 53.5 MB). Free memory was 143.1 MB in the beginning and 152.9 MB in the end (delta: -9.8 MB). Peak memory consumption was 96.7 MB. Max. memory is 8.0 GB. [2021-04-16 06:47:11,809 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 176.2 MB. Free memory was 159.1 MB in the beginning and 159.0 MB in the end (delta: 113.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 231.54 ms. Allocated memory is still 176.2 MB. Free memory was 142.0 MB in the beginning and 159.9 MB in the end (delta: -17.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.01 ms. Allocated memory is still 176.2 MB. Free memory was 159.9 MB in the beginning and 158.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 398.57 ms. Allocated memory is still 176.2 MB. Free memory was 158.3 MB in the beginning and 143.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2340.22 ms. Allocated memory was 176.2 MB in the beginning and 229.6 MB in the end (delta: 53.5 MB). Free memory was 143.1 MB in the beginning and 152.9 MB in the end (delta: -9.8 MB). Peak memory consumption was 96.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1853.6ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 12.4ms, AutomataDifference: 961.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 426.9ms, InitialAbstractionConstructionTime: 8.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 30 SDtfs, 89 SDslu, 100 SDs, 0 SdLazy, 247 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 235.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 730.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 60.3ms AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 26 LocationsWithAnnotation, 44 PreInvPairs, 70 NumberOfFragments, 219 HoareAnnotationTreeSize, 44 FomulaSimplifications, 1098 FormulaSimplificationTreeSizeReduction, 97.3ms HoareSimplificationTime, 26 FomulaSimplificationsInter, 556 FormulaSimplificationTreeSizeReductionInter, 307.3ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((!(pathlim <= tmp) || !(tmp == pathbuf)) || !(pathbuf == 0)) || (pathlim <= tmp && tmp == p)) || !(4 <= tmp) - ProcedureContractResult [Line: 25]: Procedure Contract for glob2 Derived contract for procedure glob2: 1 - ProcedureContractResult [Line: 38]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! Received shutdown request...