/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/oomInt.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:36:20,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:36:20,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:36:20,314 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:36:20,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:36:20,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:36:20,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:36:20,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:36:20,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:36:20,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:36:20,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:36:20,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:36:20,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:36:20,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:36:20,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:36:20,403 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:36:20,412 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:36:20,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:36:20,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:36:20,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:36:20,435 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 13:36:20,492 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:36:20,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:36:20,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:36:20,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:36:20,498 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:36:20,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:36:20,499 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:36:20,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:36:20,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:36:20,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:36:20,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:36:20,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:36:20,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:36:20,502 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:36:20,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:36:20,502 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:36:20,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:36:20,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:36:20,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:36:20,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:36:20,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:36:20,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:36:20,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:36:20,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:36:20,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:36:20,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:36:20,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:36:20,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:36:20,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:36:20,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:36:21,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:36:21,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:36:21,005 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:36:21,006 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:36:21,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/oomInt.c_1.i [2021-02-23 13:36:21,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c17263b69/f6cfc8da7fed41a4aa0081da042fa3da/FLAGe6c7fbcb2 [2021-02-23 13:36:21,686 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:36:21,687 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/oomInt.c_1.i [2021-02-23 13:36:21,695 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c17263b69/f6cfc8da7fed41a4aa0081da042fa3da/FLAGe6c7fbcb2 [2021-02-23 13:36:22,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c17263b69/f6cfc8da7fed41a4aa0081da042fa3da [2021-02-23 13:36:22,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:36:22,088 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:36:22,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:36:22,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:36:22,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:36:22,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:36:22" (1/1) ... [2021-02-23 13:36:22,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b062f16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:22, skipping insertion in model container [2021-02-23 13:36:22,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:36:22" (1/1) ... [2021-02-23 13:36:22,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:36:22,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:36:22,340 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/oomInt.c_1.i[293,306] [2021-02-23 13:36:22,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:36:22,390 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:36:22,405 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/oomInt.c_1.i[293,306] [2021-02-23 13:36:22,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:36:22,429 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:36:22,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:22 WrapperNode [2021-02-23 13:36:22,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:36:22,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:36:22,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:36:22,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:36:22,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:22" (1/1) ... [2021-02-23 13:36:22,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:22" (1/1) ... [2021-02-23 13:36:22,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:22" (1/1) ... [2021-02-23 13:36:22,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:22" (1/1) ... [2021-02-23 13:36:22,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:22" (1/1) ... [2021-02-23 13:36:22,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:22" (1/1) ... [2021-02-23 13:36:22,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:22" (1/1) ... [2021-02-23 13:36:22,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:36:22,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:36:22,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:36:22,464 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:36:22,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:22" (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 13:36:22,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:36:22,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:36:22,569 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:36:22,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-02-23 13:36:22,570 INFO L138 BoogieDeclarations]: Found implementation of procedure abs_int [2021-02-23 13:36:22,570 INFO L138 BoogieDeclarations]: Found implementation of procedure firstFunction [2021-02-23 13:36:22,570 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:36:22,570 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:36:22,570 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:36:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:36:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:36:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-02-23 13:36:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure abs_int [2021-02-23 13:36:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure firstFunction [2021-02-23 13:36:22,571 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:36:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:36:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:36:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:36:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:36:22,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:36:22,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:36:22,887 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:36:22,888 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 13:36:22,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:36:22 BoogieIcfgContainer [2021-02-23 13:36:22,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:36:22,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:36:22,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:36:22,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:36:22,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:36:22" (1/3) ... [2021-02-23 13:36:22,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@745aa7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:36:22, skipping insertion in model container [2021-02-23 13:36:22,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:36:22" (2/3) ... [2021-02-23 13:36:22,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@745aa7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:36:22, skipping insertion in model container [2021-02-23 13:36:22,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:36:22" (3/3) ... [2021-02-23 13:36:22,901 INFO L111 eAbstractionObserver]: Analyzing ICFG oomInt.c_1.i [2021-02-23 13:36:22,924 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:36:22,930 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:36:22,956 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:36:22,989 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:36:22,990 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:36:22,990 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:36:22,990 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:36:22,991 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:36:22,991 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:36:22,991 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:36:22,991 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:36:23,012 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2021-02-23 13:36:23,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-02-23 13:36:23,019 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:36:23,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:36:23,021 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:36:23,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:36:23,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1251208766, now seen corresponding path program 1 times [2021-02-23 13:36:23,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:36:23,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669797243] [2021-02-23 13:36:23,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:36:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:36:23,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:36:23,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:36:23,347 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:36:23,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:36:23,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:36:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:36:23,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:36:23,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:36:23,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:36:23,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:36:23,477 WARN L141 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-02-23 13:36:23,480 WARN L147 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size 9 [2021-02-23 13:36:23,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:36:23,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:36:23,528 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 13:36:23,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669797243] [2021-02-23 13:36:23,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:36:23,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:36:23,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594476935] [2021-02-23 13:36:23,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:36:23,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:36:23,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:36:23,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:36:23,561 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2021-02-23 13:36:23,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:36:23,753 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2021-02-23 13:36:23,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 13:36:23,755 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-02-23 13:36:23,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:36:23,764 INFO L225 Difference]: With dead ends: 37 [2021-02-23 13:36:23,765 INFO L226 Difference]: Without dead ends: 16 [2021-02-23 13:36:23,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-02-23 13:36:23,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-02-23 13:36:23,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-02-23 13:36:23,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-02-23 13:36:23,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2021-02-23 13:36:23,811 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2021-02-23 13:36:23,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:36:23,811 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2021-02-23 13:36:23,811 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:36:23,812 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2021-02-23 13:36:23,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-02-23 13:36:23,813 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:36:23,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:36:23,813 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:36:23,814 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:36:23,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:36:23,815 INFO L82 PathProgramCache]: Analyzing trace with hash 363705085, now seen corresponding path program 1 times [2021-02-23 13:36:23,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:36:23,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114808963] [2021-02-23 13:36:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:36:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:36:23,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:36:23,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:36:23,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:36:23,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:36:23,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:36:23,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:36:23,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:36:23,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:36:23,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:36:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:36:23,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:36:23,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:36:23,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:36:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:36:23,924 WARN L141 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-02-23 13:36:23,925 WARN L147 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size 9 [2021-02-23 13:36:23,937 WARN L141 QuantifierPusher]: treesize reduction -2, result has 125.0 percent of original size [2021-02-23 13:36:23,939 WARN L147 QuantifierPusher]: treesize reduction -2, result has 125.0 percent of original size 10 [2021-02-23 13:36:23,953 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 13:36:23,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114808963] [2021-02-23 13:36:23,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:36:23,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 13:36:23,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773227202] [2021-02-23 13:36:23,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 13:36:23,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:36:23,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 13:36:23,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 13:36:23,958 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 7 states. [2021-02-23 13:36:24,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:36:24,117 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-02-23 13:36:24,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 13:36:24,117 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2021-02-23 13:36:24,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:36:24,118 INFO L225 Difference]: With dead ends: 16 [2021-02-23 13:36:24,118 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 13:36:24,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-02-23 13:36:24,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 13:36:24,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 13:36:24,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 13:36:24,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 13:36:24,121 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-02-23 13:36:24,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:36:24,121 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 13:36:24,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 13:36:24,122 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 13:36:24,122 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 13:36:24,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:36:24,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 13:36:24,235 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 13:36:24,235 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 13:36:24,235 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 13:36:24,236 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:36:24,236 INFO L185 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)|) (= ~p~0 |old(~p~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#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|)) [2021-02-23 13:36:24,236 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:36:24,236 INFO L189 CegarLoopUtils]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2021-02-23 13:36:24,237 INFO L189 CegarLoopUtils]: For program point __blast_assertEXIT(lines 7 10) no Hoare annotation was computed. [2021-02-23 13:36:24,237 INFO L189 CegarLoopUtils]: For program point __blast_assertFINAL(lines 7 10) no Hoare annotation was computed. [2021-02-23 13:36:24,237 INFO L192 CegarLoopUtils]: At program point __blast_assertENTRY(lines 7 10) the Hoare annotation is: true [2021-02-23 13:36:24,237 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:36:24,237 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 13:36:24,237 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 13:36:24,238 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:36:24,238 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 34 37) the Hoare annotation is: (= ~p~0 |old(~p~0)|) [2021-02-23 13:36:24,238 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 34 37) no Hoare annotation was computed. [2021-02-23 13:36:24,238 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 34 37) no Hoare annotation was computed. [2021-02-23 13:36:24,238 INFO L189 CegarLoopUtils]: For program point abs_intEXIT(lines 17 26) no Hoare annotation was computed. [2021-02-23 13:36:24,238 INFO L192 CegarLoopUtils]: At program point abs_intENTRY(lines 17 26) the Hoare annotation is: true [2021-02-23 13:36:24,238 INFO L189 CegarLoopUtils]: For program point L19(lines 19 25) no Hoare annotation was computed. [2021-02-23 13:36:24,239 INFO L189 CegarLoopUtils]: For program point abs_intFINAL(lines 17 26) no Hoare annotation was computed. [2021-02-23 13:36:24,239 INFO L189 CegarLoopUtils]: For program point L31(line 31) no Hoare annotation was computed. [2021-02-23 13:36:24,239 INFO L189 CegarLoopUtils]: For program point L30(line 30) no Hoare annotation was computed. [2021-02-23 13:36:24,239 INFO L185 CegarLoopUtils]: At program point L31-2(line 31) the Hoare annotation is: false [2021-02-23 13:36:24,239 INFO L189 CegarLoopUtils]: For program point L31-3(lines 28 32) no Hoare annotation was computed. [2021-02-23 13:36:24,239 INFO L185 CegarLoopUtils]: At program point firstFunctionENTRY(lines 28 32) the Hoare annotation is: (= ~p~0 |old(~p~0)|) [2021-02-23 13:36:24,239 INFO L189 CegarLoopUtils]: For program point firstFunctionEXIT(lines 28 32) no Hoare annotation was computed. [2021-02-23 13:36:24,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:36:24 BoogieIcfgContainer [2021-02-23 13:36:24,249 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:36:24,250 INFO L168 Benchmark]: Toolchain (without parser) took 2175.81 ms. Allocated memory is still 158.3 MB. Free memory was 134.1 MB in the beginning and 132.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 82.3 MB. Max. memory is 8.0 GB. [2021-02-23 13:36:24,255 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 158.3 MB. Free memory is still 130.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:36:24,256 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.57 ms. Allocated memory is still 158.3 MB. Free memory was 133.1 MB in the beginning and 123.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:36:24,256 INFO L168 Benchmark]: Boogie Preprocessor took 32.15 ms. Allocated memory is still 158.3 MB. Free memory was 123.8 MB in the beginning and 122.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:36:24,258 INFO L168 Benchmark]: RCFGBuilder took 426.55 ms. Allocated memory is still 158.3 MB. Free memory was 122.6 MB in the beginning and 110.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:36:24,260 INFO L168 Benchmark]: TraceAbstraction took 1356.73 ms. Allocated memory is still 158.3 MB. Free memory was 109.6 MB in the beginning and 132.8 MB in the end (delta: -23.1 MB). Peak memory consumption was 58.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:36:24,266 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 158.3 MB. Free memory is still 130.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 336.57 ms. Allocated memory is still 158.3 MB. Free memory was 133.1 MB in the beginning and 123.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.15 ms. Allocated memory is still 158.3 MB. Free memory was 123.8 MB in the beginning and 122.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 426.55 ms. Allocated memory is still 158.3 MB. Free memory was 122.6 MB in the beginning and 110.0 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1356.73 ms. Allocated memory is still 158.3 MB. Free memory was 109.6 MB in the beginning and 132.8 MB in the end (delta: -23.1 MB). Peak memory consumption was 58.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 15 SDslu, 52 SDs, 0 SdLazy, 51 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 8 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 45 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 95 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 1988 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...