/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 00:05:40,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 00:05:40,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 00:05:40,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 00:05:40,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 00:05:40,446 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 00:05:40,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 00:05:40,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 00:05:40,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 00:05:40,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 00:05:40,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 00:05:40,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 00:05:40,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 00:05:40,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 00:05:40,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 00:05:40,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 00:05:40,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 00:05:40,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 00:05:40,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 00:05:40,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 00:05:40,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 00:05:40,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 00:05:40,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 00:05:40,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 00:05:40,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-04-16 00:05:40,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-04-16 00:05:40,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-04-16 00:05:40,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-04-16 00:05:40,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-04-16 00:05:40,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-04-16 00:05:40,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 00:05:40,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 00:05:40,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 00:05:40,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 00:05:40,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 00:05:40,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 00:05:40,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 00:05:40,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 00:05:40,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 00:05:40,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 00:05:40,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 00:05:40,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-04-16 00:05:40,538 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 00:05:40,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 00:05:40,542 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-04-16 00:05:40,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-04-16 00:05:40,543 INFO L138 SettingsManager]: * Use SBE=true [2021-04-16 00:05:40,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 00:05:40,543 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 00:05:40,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 00:05:40,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 00:05:40,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 00:05:40,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 00:05:40,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 00:05:40,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 00:05:40,544 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 00:05:40,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 00:05:40,545 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 00:05:40,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 00:05:40,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 00:05:40,545 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 00:05:40,545 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 00:05:40,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 00:05:40,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 00:05:40,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-04-16 00:05:40,546 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-04-16 00:05:40,546 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-16 00:05:40,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-04-16 00:05:40,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 00:05:40,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-04-16 00:05:40,547 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 00:05:40,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 00:05:40,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 00:05:40,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 00:05:40,877 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 00:05:40,877 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 00:05:40,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c [2021-04-16 00:05:40,963 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/263c92dec/79f088d035c04ab99dfdb8035e498d1a/FLAG15b0ec73e [2021-04-16 00:05:41,450 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 00:05:41,451 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv1.c [2021-04-16 00:05:41,456 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/263c92dec/79f088d035c04ab99dfdb8035e498d1a/FLAG15b0ec73e [2021-04-16 00:05:41,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/263c92dec/79f088d035c04ab99dfdb8035e498d1a [2021-04-16 00:05:41,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 00:05:41,830 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 00:05:41,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 00:05:41,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 00:05:41,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 00:05:41,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 12:05:41" (1/1) ... [2021-04-16 00:05:41,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6457a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:05:41, skipping insertion in model container [2021-04-16 00:05:41,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 12:05:41" (1/1) ... [2021-04-16 00:05:41,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 00:05:41,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 00:05:41,968 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-crafted-1/loopv1.c[456,469] [2021-04-16 00:05:41,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 00:05:41,982 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 00:05:41,992 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-crafted-1/loopv1.c[456,469] [2021-04-16 00:05:41,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 00:05:42,007 INFO L208 MainTranslator]: Completed translation [2021-04-16 00:05:42,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:05:42 WrapperNode [2021-04-16 00:05:42,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 00:05:42,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 00:05:42,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 00:05:42,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 00:05:42,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:05:42" (1/1) ... [2021-04-16 00:05:42,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:05:42" (1/1) ... [2021-04-16 00:05:42,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:05:42" (1/1) ... [2021-04-16 00:05:42,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:05:42" (1/1) ... [2021-04-16 00:05:42,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:05:42" (1/1) ... [2021-04-16 00:05:42,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:05:42" (1/1) ... [2021-04-16 00:05:42,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:05:42" (1/1) ... [2021-04-16 00:05:42,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 00:05:42,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 00:05:42,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 00:05:42,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 00:05:42,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:05:42" (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 00:05:42,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 00:05:42,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 00:05:42,137 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 00:05:42,138 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-04-16 00:05:42,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 00:05:42,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 00:05:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 00:05:42,138 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 00:05:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 00:05:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 00:05:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 00:05:42,139 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-04-16 00:05:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 00:05:42,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 00:05:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 00:05:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 00:05:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 00:05:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 00:05:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 00:05:42,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 00:05:42,421 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 00:05:42,422 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 00:05:42,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 12:05:42 BoogieIcfgContainer [2021-04-16 00:05:42,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 00:05:42,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 00:05:42,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 00:05:42,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 00:05:42,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 12:05:41" (1/3) ... [2021-04-16 00:05:42,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5076ba47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 12:05:42, skipping insertion in model container [2021-04-16 00:05:42,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 12:05:42" (2/3) ... [2021-04-16 00:05:42,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5076ba47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 12:05:42, skipping insertion in model container [2021-04-16 00:05:42,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 12:05:42" (3/3) ... [2021-04-16 00:05:42,429 INFO L111 eAbstractionObserver]: Analyzing ICFG loopv1.c [2021-04-16 00:05:42,434 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-04-16 00:05:42,439 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 00:05:42,453 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 00:05:42,471 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 00:05:42,471 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 00:05:42,471 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-04-16 00:05:42,472 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 00:05:42,472 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 00:05:42,472 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 00:05:42,472 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 00:05:42,472 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 00:05:42,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 00:05:42,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-04-16 00:05:42,488 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 00:05:42,488 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 00:05:42,489 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 00:05:42,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 00:05:42,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1965397839, now seen corresponding path program 1 times [2021-04-16 00:05:42,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 00:05:42,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839247687] [2021-04-16 00:05:42,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 00:05:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:05:42,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:42,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:42,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:42,739 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:42,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:42,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 00:05:42,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:42,773 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 00:05:42,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:42,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:42,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 00:05:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:05:42,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:42,880 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:42,882 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 00:05:42,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839247687] [2021-04-16 00:05:42,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 00:05:42,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-16 00:05:42,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819783134] [2021-04-16 00:05:42,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 00:05:42,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 00:05:42,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 00:05:42,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-16 00:05:42,899 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:05:43,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 00:05:43,157 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2021-04-16 00:05:43,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 00:05:43,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-04-16 00:05:43,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 00:05:43,164 INFO L225 Difference]: With dead ends: 43 [2021-04-16 00:05:43,165 INFO L226 Difference]: Without dead ends: 16 [2021-04-16 00:05:43,167 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 243.5ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-04-16 00:05:43,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-04-16 00:05:43,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-04-16 00:05:43,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:05:43,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-04-16 00:05:43,233 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-04-16 00:05:43,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 00:05:43,233 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-04-16 00:05:43,234 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:05:43,234 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-04-16 00:05:43,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-16 00:05:43,234 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 00:05:43,234 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 00:05:43,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 00:05:43,235 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 00:05:43,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 00:05:43,236 INFO L82 PathProgramCache]: Analyzing trace with hash 2050700910, now seen corresponding path program 1 times [2021-04-16 00:05:43,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 00:05:43,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705154652] [2021-04-16 00:05:43,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 00:05:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:05:43,296 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,297 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,298 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,298 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,316 INFO L142 QuantifierPusher]: treesize reduction 76, result has 35.0 percent of original size [2021-04-16 00:05:43,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-04-16 00:05:43,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,344 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 00:05:43,350 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,351 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 00:05:43,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 00:05:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:05:43,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,414 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 00:05:43,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705154652] [2021-04-16 00:05:43,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046330113] [2021-04-16 00:05:43,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-16 00:05:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 00:05:43,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2021-04-16 00:05:43,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-16 00:05:43,505 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,505 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,506 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,506 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,507 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,511 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,512 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,513 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,513 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,517 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,519 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,520 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,521 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,523 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,523 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,524 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,524 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,525 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,525 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,526 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,526 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,527 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,527 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,528 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,528 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,529 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,529 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,530 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,530 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,531 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,531 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,532 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,532 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,533 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,533 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,546 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,547 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,548 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,548 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,549 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,554 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,569 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,581 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,582 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,583 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,586 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,587 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,589 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,594 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,594 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,595 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,595 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,596 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,596 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,608 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,609 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 00:05:43,611 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,614 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,615 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 00:05:43,629 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-04-16 00:05:43,631 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,632 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,632 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,633 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,633 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,634 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 00:05:43,635 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 00:05:43,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 00:05:43,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-16 00:05:43,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-04-16 00:05:43,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908401478] [2021-04-16 00:05:43,637 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-04-16 00:05:43,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 00:05:43,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-04-16 00:05:43,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-04-16 00:05:43,639 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:05:43,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 00:05:43,897 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2021-04-16 00:05:43,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 00:05:43,897 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-04-16 00:05:43,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 00:05:43,898 INFO L225 Difference]: With dead ends: 19 [2021-04-16 00:05:43,898 INFO L226 Difference]: Without dead ends: 0 [2021-04-16 00:05:43,901 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 265.1ms TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-04-16 00:05:43,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-16 00:05:43,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-16 00:05:43,902 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 00:05:43,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-16 00:05:43,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-04-16 00:05:43,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 00:05:43,902 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-16 00:05:43,902 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 1.5) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 00:05:43,903 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-16 00:05:43,903 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-16 00:05:44,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-04-16 00:05:44,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-04-16 00:05:44,287 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 7) no Hoare annotation was computed. [2021-04-16 00:05:44,287 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 7) no Hoare annotation was computed. [2021-04-16 00:05:44,288 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 7) no Hoare annotation was computed. [2021-04-16 00:05:44,288 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-04-16 00:05:44,288 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~SIZE~0 |old(~SIZE~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-04-16 00:05:44,288 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-04-16 00:05:44,288 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-04-16 00:05:44,288 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-04-16 00:05:44,288 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-04-16 00:05:44,288 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-04-16 00:05:44,289 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 9 11) no Hoare annotation was computed. [2021-04-16 00:05:44,289 INFO L198 CegarLoopUtils]: For program point L10(line 10) no Hoare annotation was computed. [2021-04-16 00:05:44,289 INFO L198 CegarLoopUtils]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2021-04-16 00:05:44,289 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2021-04-16 00:05:44,289 INFO L198 CegarLoopUtils]: For program point L32(line 32) no Hoare annotation was computed. [2021-04-16 00:05:44,289 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 20 34) the Hoare annotation is: true [2021-04-16 00:05:44,289 INFO L198 CegarLoopUtils]: For program point L27(lines 27 30) no Hoare annotation was computed. [2021-04-16 00:05:44,289 INFO L194 CegarLoopUtils]: At program point L27-2(lines 25 31) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3)) [2021-04-16 00:05:44,289 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 20 34) no Hoare annotation was computed. [2021-04-16 00:05:44,289 INFO L198 CegarLoopUtils]: For program point L23(line 23) no Hoare annotation was computed. [2021-04-16 00:05:44,290 INFO L194 CegarLoopUtils]: At program point L25-2(lines 25 31) the Hoare annotation is: (= main_~i~0 (* (div main_~i~0 3) 3)) [2021-04-16 00:05:44,290 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 20 34) no Hoare annotation was computed. [2021-04-16 00:05:44,290 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 12 17) the Hoare annotation is: true [2021-04-16 00:05:44,290 INFO L198 CegarLoopUtils]: For program point L14(line 14) no Hoare annotation was computed. [2021-04-16 00:05:44,290 INFO L198 CegarLoopUtils]: For program point L13(lines 13 15) no Hoare annotation was computed. [2021-04-16 00:05:44,290 INFO L198 CegarLoopUtils]: For program point L13-2(lines 12 17) no Hoare annotation was computed. [2021-04-16 00:05:44,290 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 12 17) no Hoare annotation was computed. [2021-04-16 00:05:44,290 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-04-16 00:05:44,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 12:05:44 BoogieIcfgContainer [2021-04-16 00:05:44,302 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 00:05:44,303 INFO L168 Benchmark]: Toolchain (without parser) took 2473.20 ms. Allocated memory is still 187.7 MB. Free memory was 153.0 MB in the beginning and 94.1 MB in the end (delta: 58.9 MB). Peak memory consumption was 59.2 MB. Max. memory is 8.0 GB. [2021-04-16 00:05:44,305 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 187.7 MB. Free memory was 169.6 MB in the beginning and 169.5 MB in the end (delta: 147.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 00:05:44,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.73 ms. Allocated memory is still 187.7 MB. Free memory was 152.7 MB in the beginning and 143.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-04-16 00:05:44,307 INFO L168 Benchmark]: Boogie Preprocessor took 67.65 ms. Allocated memory is still 187.7 MB. Free memory was 143.3 MB in the beginning and 170.7 MB in the end (delta: -27.4 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. [2021-04-16 00:05:44,308 INFO L168 Benchmark]: RCFGBuilder took 346.14 ms. Allocated memory is still 187.7 MB. Free memory was 170.7 MB in the beginning and 156.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-04-16 00:05:44,308 INFO L168 Benchmark]: TraceAbstraction took 1878.03 ms. Allocated memory is still 187.7 MB. Free memory was 156.0 MB in the beginning and 94.1 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.4 MB. Max. memory is 8.0 GB. [2021-04-16 00:05:44,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 187.7 MB. Free memory was 169.6 MB in the beginning and 169.5 MB in the end (delta: 147.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 169.73 ms. Allocated memory is still 187.7 MB. Free memory was 152.7 MB in the beginning and 143.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 67.65 ms. Allocated memory is still 187.7 MB. Free memory was 143.3 MB in the beginning and 170.7 MB in the end (delta: -27.4 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 346.14 ms. Allocated memory is still 187.7 MB. Free memory was 170.7 MB in the beginning and 156.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1878.03 ms. Allocated memory is still 187.7 MB. Free memory was 156.0 MB in the beginning and 94.1 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: 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, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1635.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 7.7ms, AutomataDifference: 540.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 182.0ms, InitialAbstractionConstructionTime: 8.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 21 SDtfs, 41 SDslu, 56 SDs, 0 SdLazy, 126 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 126.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 508.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 52 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 61.2ms HoareSimplificationTime, 7 FomulaSimplificationsInter, 335 FormulaSimplificationTreeSizeReductionInter, 111.2ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 22.4ms SsaConstructionTime, 112.2ms SatisfiabilityAnalysisTime, 527.4ms InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 147 SizeOfPredicates, 1 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: i == i / 3 * 3 RESULT: Ultimate proved your program to be correct! Received shutdown request...