/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 13:35:33,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 13:35:33,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 13:35:33,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 13:35:33,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 13:35:33,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 13:35:33,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 13:35:33,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 13:35:33,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 13:35:33,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 13:35:33,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 13:35:33,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 13:35:33,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 13:35:33,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 13:35:33,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 13:35:33,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 13:35:33,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 13:35:33,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 13:35:33,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 13:35:33,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 13:35:33,456 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 [2021-05-02 13:35:33,498 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 13:35:33,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 13:35:33,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 13:35:33,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 13:35:33,502 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 13:35:33,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 13:35:33,502 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 13:35:33,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 13:35:33,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 13:35:33,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 13:35:33,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 13:35:33,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 13:35:33,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 13:35:33,504 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 13:35:33,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 13:35:33,504 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 13:35:33,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 13:35:33,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 13:35:33,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 13:35:33,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 13:35:33,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 13:35:33,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 13:35:33,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 13:35:33,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 13:35:33,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 13:35:33,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 13:35:33,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 13:35:33,506 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 13:35:33,506 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 13:35:33,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 13:35:33,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 13:35:33,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 13:35:33,816 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 13:35:33,817 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 13:35:33,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max.c [2021-05-02 13:35:33,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7942e0d8/0129cd466b944a6c8b3a3f847fd4e5ca/FLAG5910f8603 [2021-05-02 13:35:34,301 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 13:35:34,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max.c [2021-05-02 13:35:34,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7942e0d8/0129cd466b944a6c8b3a3f847fd4e5ca/FLAG5910f8603 [2021-05-02 13:35:34,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7942e0d8/0129cd466b944a6c8b3a3f847fd4e5ca [2021-05-02 13:35:34,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 13:35:34,332 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 13:35:34,334 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 13:35:34,334 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 13:35:34,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 13:35:34,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:35:34" (1/1) ... [2021-05-02 13:35:34,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1931d622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:34, skipping insertion in model container [2021-05-02 13:35:34,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 01:35:34" (1/1) ... [2021-05-02 13:35:34,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 13:35:34,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 13:35:34,465 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max.c[485,498] [2021-05-02 13:35:34,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:35:34,498 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 13:35:34,511 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max.c[485,498] [2021-05-02 13:35:34,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 13:35:34,539 INFO L208 MainTranslator]: Completed translation [2021-05-02 13:35:34,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:34 WrapperNode [2021-05-02 13:35:34,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 13:35:34,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 13:35:34,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 13:35:34,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 13:35:34,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:34" (1/1) ... [2021-05-02 13:35:34,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:34" (1/1) ... [2021-05-02 13:35:34,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:34" (1/1) ... [2021-05-02 13:35:34,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:34" (1/1) ... [2021-05-02 13:35:34,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:34" (1/1) ... [2021-05-02 13:35:34,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:34" (1/1) ... [2021-05-02 13:35:34,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:34" (1/1) ... [2021-05-02 13:35:34,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 13:35:34,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 13:35:34,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 13:35:34,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 13:35:34,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:34" (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 [2021-05-02 13:35:34,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 13:35:34,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 13:35:34,685 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 13:35:34,685 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 13:35:34,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 13:35:34,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 13:35:34,685 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-05-02 13:35:34,686 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-05-02 13:35:34,686 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-05-02 13:35:34,686 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 13:35:34,686 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 13:35:34,686 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 13:35:34,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 13:35:34,687 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 13:35:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 13:35:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 13:35:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 13:35:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-05-02 13:35:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-05-02 13:35:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 13:35:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 13:35:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 13:35:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 13:35:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 13:35:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 13:35:35,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 13:35:35,051 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 13:35:35,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:35:35 BoogieIcfgContainer [2021-05-02 13:35:35,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 13:35:35,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 13:35:35,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 13:35:35,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 13:35:35,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 01:35:34" (1/3) ... [2021-05-02 13:35:35,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a29d8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:35:35, skipping insertion in model container [2021-05-02 13:35:35,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 01:35:34" (2/3) ... [2021-05-02 13:35:35,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a29d8ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 01:35:35, skipping insertion in model container [2021-05-02 13:35:35,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 01:35:35" (3/3) ... [2021-05-02 13:35:35,063 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2021-05-02 13:35:35,071 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 13:35:35,074 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 13:35:35,090 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 13:35:35,121 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 13:35:35,121 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 13:35:35,121 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 13:35:35,121 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 13:35:35,121 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 13:35:35,121 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 13:35:35,122 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 13:35:35,122 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 13:35:35,144 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 13:35:35,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 13:35:35,151 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:35,151 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:35,153 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:35,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:35,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1951153279, now seen corresponding path program 1 times [2021-05-02 13:35:35,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:35,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392697996] [2021-05-02 13:35:35,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:35,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:35,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 13:35:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:35,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 13:35:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:35,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 13:35:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 13:35:35,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:35,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392697996] [2021-05-02 13:35:35,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392697996] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:35:35,431 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:35:35,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 13:35:35,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137234082] [2021-05-02 13:35:35,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 13:35:35,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:35,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 13:35:35,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 13:35:35,449 INFO L87 Difference]: Start difference. First operand has 39 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 13:35:35,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:35,589 INFO L93 Difference]: Finished difference Result 71 states and 90 transitions. [2021-05-02 13:35:35,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 13:35:35,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-05-02 13:35:35,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:35,597 INFO L225 Difference]: With dead ends: 71 [2021-05-02 13:35:35,597 INFO L226 Difference]: Without dead ends: 34 [2021-05-02 13:35:35,600 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 69.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 13:35:35,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-02 13:35:35,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-05-02 13:35:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 13:35:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2021-05-02 13:35:35,635 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 29 [2021-05-02 13:35:35,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:35,635 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2021-05-02 13:35:35,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 13:35:35,636 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2021-05-02 13:35:35,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 13:35:35,637 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:35,637 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:35,638 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 13:35:35,638 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:35,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:35,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1957169217, now seen corresponding path program 1 times [2021-05-02 13:35:35,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:35,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106422060] [2021-05-02 13:35:35,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:35,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:35,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 13:35:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:35,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 13:35:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:35,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 13:35:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 13:35:35,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:35,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106422060] [2021-05-02 13:35:35,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106422060] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:35:35,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:35:35,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-05-02 13:35:35,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815593275] [2021-05-02 13:35:35,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 13:35:35,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:35,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 13:35:35,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-05-02 13:35:35,842 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 13:35:36,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:36,209 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-05-02 13:35:36,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 13:35:36,210 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-05-02 13:35:36,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:36,212 INFO L225 Difference]: With dead ends: 40 [2021-05-02 13:35:36,212 INFO L226 Difference]: Without dead ends: 38 [2021-05-02 13:35:36,213 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 242.6ms TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-05-02 13:35:36,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-02 13:35:36,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-02 13:35:36,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 13:35:36,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-05-02 13:35:36,222 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 29 [2021-05-02 13:35:36,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:36,223 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-05-02 13:35:36,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 13:35:36,223 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-05-02 13:35:36,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 13:35:36,225 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 13:35:36,225 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 13:35:36,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 13:35:36,225 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 13:35:36,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 13:35:36,226 INFO L82 PathProgramCache]: Analyzing trace with hash -718145150, now seen corresponding path program 1 times [2021-05-02 13:35:36,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 13:35:36,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801460161] [2021-05-02 13:35:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 13:35:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:36,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 13:35:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:36,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 13:35:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:36,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 13:35:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:36,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-05-02 13:35:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:36,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-05-02 13:35:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 13:35:36,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 13:35:36,464 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 13:35:36,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801460161] [2021-05-02 13:35:36,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801460161] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 13:35:36,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 13:35:36,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-05-02 13:35:36,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802950509] [2021-05-02 13:35:36,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 13:35:36,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 13:35:36,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 13:35:36,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-05-02 13:35:36,468 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 13:35:36,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 13:35:36,872 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-05-02 13:35:36,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 13:35:36,873 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2021-05-02 13:35:36,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 13:35:36,874 INFO L225 Difference]: With dead ends: 38 [2021-05-02 13:35:36,874 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 13:35:36,876 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 284.5ms TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-05-02 13:35:36,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 13:35:36,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 13:35:36,876 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) [2021-05-02 13:35:36,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 13:35:36,877 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-05-02 13:35:36,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 13:35:36,877 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 13:35:36,877 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-05-02 13:35:36,877 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 13:35:36,877 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 13:35:36,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 13:35:36,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 13:35:37,068 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2021-05-02 13:35:37,069 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 5) no Hoare annotation was computed. [2021-05-02 13:35:37,069 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2021-05-02 13:35:37,069 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 13:35:37,069 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#t~string7.offset| |old(#t~string7.offset)|) (= |old(#t~string7.base)| |#t~string7.base|) (= |old(#valid)| |#valid|)) [2021-05-02 13:35:37,069 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 13:35:37,069 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 13:35:37,069 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 13:35:37,070 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 13:35:37,070 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 13:35:37,070 INFO L201 CegarLoopUtils]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2021-05-02 13:35:37,070 INFO L198 CegarLoopUtils]: For program point L8(line 8) no Hoare annotation was computed. [2021-05-02 13:35:37,070 INFO L198 CegarLoopUtils]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2021-05-02 13:35:37,070 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2021-05-02 13:35:37,070 INFO L194 CegarLoopUtils]: At program point L35-2(lines 25 37) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc9.base|)))) [2021-05-02 13:35:37,070 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 16 51) no Hoare annotation was computed. [2021-05-02 13:35:37,070 INFO L198 CegarLoopUtils]: For program point L25-2(lines 25 37) no Hoare annotation was computed. [2021-05-02 13:35:37,070 INFO L194 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2021-05-02 13:35:37,071 INFO L198 CegarLoopUtils]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-05-02 13:35:37,071 INFO L194 CegarLoopUtils]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (<= 0 |main_#t~mem19|) (= .cse0 (select |#memory_int| |main_#t~malloc9.base|)) (= |main_#t~mem18| 0))) [2021-05-02 13:35:37,071 INFO L198 CegarLoopUtils]: For program point L46-1(line 46) no Hoare annotation was computed. [2021-05-02 13:35:37,071 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 16 51) no Hoare annotation was computed. [2021-05-02 13:35:37,071 INFO L194 CegarLoopUtils]: At program point L42(line 42) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc9.base|)))) [2021-05-02 13:35:37,071 INFO L198 CegarLoopUtils]: For program point L42-1(line 42) no Hoare annotation was computed. [2021-05-02 13:35:37,071 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 16 51) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2021-05-02 13:35:37,071 INFO L194 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2021-05-02 13:35:37,071 INFO L198 CegarLoopUtils]: For program point L20-1(line 20) no Hoare annotation was computed. [2021-05-02 13:35:37,072 INFO L194 CegarLoopUtils]: At program point L43(line 43) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= |main_#t~mem15| 0) (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc9.base|)) (= |main_#t~mem16| 0))) [2021-05-02 13:35:37,072 INFO L198 CegarLoopUtils]: For program point L45-2(lines 45 47) no Hoare annotation was computed. [2021-05-02 13:35:37,072 INFO L198 CegarLoopUtils]: For program point L43-1(line 43) no Hoare annotation was computed. [2021-05-02 13:35:37,072 INFO L194 CegarLoopUtils]: At program point L45-3(lines 45 47) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc9.base|)))) [2021-05-02 13:35:37,072 INFO L198 CegarLoopUtils]: For program point L45-4(lines 45 47) no Hoare annotation was computed. [2021-05-02 13:35:37,072 INFO L198 CegarLoopUtils]: For program point L35(lines 35 36) no Hoare annotation was computed. [2021-05-02 13:35:37,072 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 10 12) the Hoare annotation is: true [2021-05-02 13:35:37,072 INFO L198 CegarLoopUtils]: For program point L11(line 11) no Hoare annotation was computed. [2021-05-02 13:35:37,072 INFO L198 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-05-02 13:35:37,072 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 10 12) no Hoare annotation was computed. [2021-05-02 13:35:37,072 INFO L198 CegarLoopUtils]: For program point L11-3(lines 10 12) no Hoare annotation was computed. [2021-05-02 13:35:37,073 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-05-02 13:35:37,073 INFO L194 CegarLoopUtils]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2021-05-02 13:35:37,073 INFO L198 CegarLoopUtils]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2021-05-02 13:35:37,073 INFO L198 CegarLoopUtils]: For program point #Ultimate.meminitFINAL(line -1) no Hoare annotation was computed. [2021-05-02 13:35:37,080 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:559) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:256) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:215) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-05-02 13:35:37,083 INFO L168 Benchmark]: Toolchain (without parser) took 2750.96 ms. Allocated memory is still 197.1 MB. Free memory was 160.7 MB in the beginning and 127.2 MB in the end (delta: 33.6 MB). Peak memory consumption was 35.0 MB. Max. memory is 8.0 GB. [2021-05-02 13:35:37,083 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 197.1 MB. Free memory is still 178.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 13:35:37,083 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.44 ms. Allocated memory is still 197.1 MB. Free memory was 160.6 MB in the beginning and 150.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-02 13:35:37,084 INFO L168 Benchmark]: Boogie Preprocessor took 43.21 ms. Allocated memory is still 197.1 MB. Free memory was 150.7 MB in the beginning and 149.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 13:35:37,084 INFO L168 Benchmark]: RCFGBuilder took 468.39 ms. Allocated memory is still 197.1 MB. Free memory was 148.9 MB in the beginning and 163.7 MB in the end (delta: -14.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 13:35:37,085 INFO L168 Benchmark]: TraceAbstraction took 2025.97 ms. Allocated memory is still 197.1 MB. Free memory was 163.2 MB in the beginning and 127.2 MB in the end (delta: 36.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 8.0 GB. [2021-05-02 13:35:37,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 197.1 MB. Free memory is still 178.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 206.44 ms. Allocated memory is still 197.1 MB. Free memory was 160.6 MB in the beginning and 150.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.21 ms. Allocated memory is still 197.1 MB. Free memory was 150.7 MB in the beginning and 149.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 468.39 ms. Allocated memory is still 197.1 MB. Free memory was 148.9 MB in the beginning and 163.7 MB in the end (delta: -14.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2025.97 ms. Allocated memory is still 197.1 MB. Free memory was 163.2 MB in the beginning and 127.2 MB in the end (delta: 36.1 MB). Peak memory consumption was 37.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: 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 7 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1759.5ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 13.7ms, AutomataDifference: 943.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 189.8ms, InitialAbstractionConstructionTime: 17.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 88 SDtfs, 121 SDslu, 152 SDs, 0 SdLazy, 446 SolverSat, 71 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 369.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 596.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 32.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 14 LocationsWithAnnotation, 20 PreInvPairs, 26 NumberOfFragments, 138 HoareAnnotationTreeSize, 20 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 51.8ms HoareSimplificationTime, 14 FomulaSimplificationsInter, 156 FormulaSimplificationTreeSizeReductionInter, 119.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 18.8ms SsaConstructionTime, 84.0ms SatisfiabilityAnalysisTime, 531.1ms InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 351 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 14/14 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 - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:240) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...