/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/ldv-regression/test14.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:37:36,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:37:36,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:37:36,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:37:36,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:37:36,351 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:37:36,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:37:36,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:37:36,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:37:36,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:37:36,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:37:36,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:37:36,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:37:36,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:37:36,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:37:36,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:37:36,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:37:36,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:37:36,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:37:36,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:37:36,398 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 [2021-02-23 13:37:36,426 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:37:36,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:37:36,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:37:36,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:37:36,429 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:37:36,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:37:36,430 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:37:36,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:37:36,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:37:36,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:37:36,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:37:36,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:37:36,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:37:36,431 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:37:36,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:37:36,431 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:37:36,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:37:36,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:37:36,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:37:36,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:37:36,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:37:36,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:37:36,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:37:36,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:37:36,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:37:36,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:37:36,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:37:36,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:37:36,434 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:37:36,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:37:36,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:37:36,847 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:37:36,849 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:37:36,850 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:37:36,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test14.c [2021-02-23 13:37:36,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53aa1ce0e/f1a9f40c9be842f68d9dcc312e51275b/FLAG9a540dacb [2021-02-23 13:37:37,670 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:37:37,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test14.c [2021-02-23 13:37:37,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53aa1ce0e/f1a9f40c9be842f68d9dcc312e51275b/FLAG9a540dacb [2021-02-23 13:37:38,033 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53aa1ce0e/f1a9f40c9be842f68d9dcc312e51275b [2021-02-23 13:37:38,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:37:38,059 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:37:38,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:37:38,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:37:38,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:37:38,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:37:38" (1/1) ... [2021-02-23 13:37:38,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34586478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:38, skipping insertion in model container [2021-02-23 13:37:38,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:37:38" (1/1) ... [2021-02-23 13:37:38,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:37:38,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:37:38,260 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test14.c[804,817] [2021-02-23 13:37:38,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:37:38,294 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:37:38,323 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test14.c[804,817] [2021-02-23 13:37:38,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:37:38,348 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:37:38,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:38 WrapperNode [2021-02-23 13:37:38,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:37:38,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:37:38,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:37:38,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:37:38,366 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:38" (1/1) ... [2021-02-23 13:37:38,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:38" (1/1) ... [2021-02-23 13:37:38,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:38" (1/1) ... [2021-02-23 13:37:38,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:38" (1/1) ... [2021-02-23 13:37:38,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:38" (1/1) ... [2021-02-23 13:37:38,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:38" (1/1) ... [2021-02-23 13:37:38,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:38" (1/1) ... [2021-02-23 13:37:38,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:37:38,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:37:38,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:37:38,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:37:38,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:38" (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 [2021-02-23 13:37:38,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:37:38,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:37:38,548 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:37:38,548 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2021-02-23 13:37:38,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:37:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:37:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:37:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:37:38,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:37:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:37:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-23 13:37:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2021-02-23 13:37:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:37:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:37:38,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:37:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:37:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:37:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:37:38,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:37:38,995 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:37:38,995 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 13:37:38,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:37:38 BoogieIcfgContainer [2021-02-23 13:37:38,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:37:38,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:37:38,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:37:39,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:37:39,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:37:38" (1/3) ... [2021-02-23 13:37:39,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de8eb25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:37:39, skipping insertion in model container [2021-02-23 13:37:39,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:38" (2/3) ... [2021-02-23 13:37:39,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de8eb25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:37:39, skipping insertion in model container [2021-02-23 13:37:39,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:37:38" (3/3) ... [2021-02-23 13:37:39,007 INFO L111 eAbstractionObserver]: Analyzing ICFG test14.c [2021-02-23 13:37:39,014 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:37:39,019 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:37:39,039 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:37:39,095 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:37:39,095 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:37:39,095 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:37:39,095 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:37:39,096 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:37:39,096 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:37:39,096 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:37:39,096 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:37:39,113 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2021-02-23 13:37:39,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-02-23 13:37:39,119 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:37:39,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:37:39,120 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:37:39,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:37:39,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1665511964, now seen corresponding path program 1 times [2021-02-23 13:37:39,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:37:39,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598724672] [2021-02-23 13:37:39,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:37:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:39,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:39,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:39,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:39,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:37:39,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:39,504 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 13:37:39,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:39,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:39,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:37:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:39,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:39,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:39,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:37:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:39,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:39,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:39,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:37:39,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598724672] [2021-02-23 13:37:39,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:37:39,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:37:39,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330155910] [2021-02-23 13:37:39,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:37:39,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:37:39,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:37:39,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:37:39,773 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2021-02-23 13:37:39,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:37:39,921 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-02-23 13:37:39,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 13:37:39,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-02-23 13:37:39,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:37:39,931 INFO L225 Difference]: With dead ends: 29 [2021-02-23 13:37:39,932 INFO L226 Difference]: Without dead ends: 18 [2021-02-23 13:37:39,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:37:39,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-02-23 13:37:39,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-02-23 13:37:39,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-02-23 13:37:39,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-02-23 13:37:39,977 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2021-02-23 13:37:39,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:37:39,977 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-02-23 13:37:39,977 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:37:39,978 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-02-23 13:37:39,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-23 13:37:39,978 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:37:39,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:37:39,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:37:39,979 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:37:39,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:37:39,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1464201374, now seen corresponding path program 1 times [2021-02-23 13:37:39,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:37:39,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455601319] [2021-02-23 13:37:39,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:37:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:40,048 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:40,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:40,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:40,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-23 13:37:40,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:40,115 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 13:37:40,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:40,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 13:37:40,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:40,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:40,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:37:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:40,195 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:40,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:40,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:37:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:40,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:40,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:40,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:37:40,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455601319] [2021-02-23 13:37:40,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:37:40,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:37:40,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739639301] [2021-02-23 13:37:40,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:37:40,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:37:40,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:37:40,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:37:40,212 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2021-02-23 13:37:40,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:37:40,309 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-02-23 13:37:40,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:37:40,310 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-02-23 13:37:40,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:37:40,311 INFO L225 Difference]: With dead ends: 18 [2021-02-23 13:37:40,311 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 13:37:40,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-23 13:37:40,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 13:37:40,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 13:37:40,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 13:37:40,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 13:37:40,313 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-02-23 13:37:40,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:37:40,314 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 13:37:40,314 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:37:40,314 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 13:37:40,314 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 13:37:40,315 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:37:40,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 13:37:40,413 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 13:37:40,413 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 13:37:40,414 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 13:37:40,414 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:37:40,414 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2021-02-23 13:37:40,415 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:37:40,415 INFO L189 CegarLoopUtils]: For program point get_dummyFINAL(lines 9 12) no Hoare annotation was computed. [2021-02-23 13:37:40,415 INFO L189 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-02-23 13:37:40,415 INFO L192 CegarLoopUtils]: At program point get_dummyENTRY(lines 9 12) the Hoare annotation is: true [2021-02-23 13:37:40,415 INFO L189 CegarLoopUtils]: For program point get_dummyEXIT(lines 9 12) no Hoare annotation was computed. [2021-02-23 13:37:40,415 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:37:40,416 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 13:37:40,416 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 13:37:40,416 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:37:40,416 INFO L189 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2021-02-23 13:37:40,416 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 14 29) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-23 13:37:40,417 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 14 29) no Hoare annotation was computed. [2021-02-23 13:37:40,417 INFO L185 CegarLoopUtils]: At program point L22(lines 14 29) the Hoare annotation is: false [2021-02-23 13:37:40,417 INFO L189 CegarLoopUtils]: For program point L21(line 21) no Hoare annotation was computed. [2021-02-23 13:37:40,417 INFO L189 CegarLoopUtils]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-02-23 13:37:40,417 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (not (= main_~pc~0.base 0)) [2021-02-23 13:37:40,418 INFO L189 CegarLoopUtils]: For program point L21-2(line 21) no Hoare annotation was computed. [2021-02-23 13:37:40,418 INFO L189 CegarLoopUtils]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-02-23 13:37:40,418 INFO L189 CegarLoopUtils]: For program point L20-2(lines 20 23) no Hoare annotation was computed. [2021-02-23 13:37:40,418 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 14 29) no Hoare annotation was computed. [2021-02-23 13:37:40,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:37:40 BoogieIcfgContainer [2021-02-23 13:37:40,431 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:37:40,433 INFO L168 Benchmark]: Toolchain (without parser) took 2388.18 ms. Allocated memory is still 154.1 MB. Free memory was 130.2 MB in the beginning and 58.2 MB in the end (delta: 72.0 MB). Peak memory consumption was 71.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:40,434 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 154.1 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:37:40,435 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.38 ms. Allocated memory is still 154.1 MB. Free memory was 129.0 MB in the beginning and 119.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:40,436 INFO L168 Benchmark]: Boogie Preprocessor took 69.24 ms. Allocated memory is still 154.1 MB. Free memory was 119.7 MB in the beginning and 118.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:40,437 INFO L168 Benchmark]: RCFGBuilder took 574.26 ms. Allocated memory is still 154.1 MB. Free memory was 118.1 MB in the beginning and 102.8 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:40,438 INFO L168 Benchmark]: TraceAbstraction took 1432.07 ms. Allocated memory is still 154.1 MB. Free memory was 102.4 MB in the beginning and 58.2 MB in the end (delta: 44.2 MB). Peak memory consumption was 43.3 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:40,443 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 154.1 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 285.38 ms. Allocated memory is still 154.1 MB. Free memory was 129.0 MB in the beginning and 119.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 69.24 ms. Allocated memory is still 154.1 MB. Free memory was 119.7 MB in the beginning and 118.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 574.26 ms. Allocated memory is still 154.1 MB. Free memory was 118.1 MB in the beginning and 102.8 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1432.07 ms. Allocated memory is still 154.1 MB. Free memory was 102.4 MB in the beginning and 58.2 MB in the end (delta: 44.2 MB). Peak memory consumption was 43.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 24 SDslu, 42 SDs, 0 SdLazy, 67 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 58 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 78 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 2418 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...