/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/loop-invgen/id_trans.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:44:13,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:44:13,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:44:13,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:44:13,974 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:44:13,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:44:13,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:44:13,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:44:13,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:44:13,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:44:14,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:44:14,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-10-23 18:44:14,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:44:14,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:44:14,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:44:14,056 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 [2020-10-23 18:44:14,104 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:44:14,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:44:14,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:44:14,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:44:14,108 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:44:14,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:44:14,109 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:44:14,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:44:14,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:44:14,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:44:14,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:44:14,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:44:14,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:44:14,111 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:44:14,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:44:14,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:44:14,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:44:14,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:44:14,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:44:14,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:44:14,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:44:14,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:44:14,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:44:14,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:44:14,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:44:14,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:44:14,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:44:14,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:44:14,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:44:14,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:44:14,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:44:14,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:44:14,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:44:14,577 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:44:14,578 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:44:14,579 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_trans.i [2020-10-23 18:44:14,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cb720f38/db0f8f4d2bc64bc296a478b34b681fa4/FLAG7436c5966 [2020-10-23 18:44:15,218 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:44:15,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i [2020-10-23 18:44:15,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cb720f38/db0f8f4d2bc64bc296a478b34b681fa4/FLAG7436c5966 [2020-10-23 18:44:15,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cb720f38/db0f8f4d2bc64bc296a478b34b681fa4 [2020-10-23 18:44:15,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:44:15,632 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:44:15,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:15,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:44:15,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:44:15,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:15" (1/1) ... [2020-10-23 18:44:15,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674e454d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:15, skipping insertion in model container [2020-10-23 18:44:15,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:44:15" (1/1) ... [2020-10-23 18:44:15,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:44:15,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:44:15,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:15,941 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:44:15,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:44:15,996 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:44:15,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:15 WrapperNode [2020-10-23 18:44:15,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:44:15,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:44:15,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:44:15,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:44:16,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:15" (1/1) ... [2020-10-23 18:44:16,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:15" (1/1) ... [2020-10-23 18:44:16,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:15" (1/1) ... [2020-10-23 18:44:16,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:15" (1/1) ... [2020-10-23 18:44:16,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:15" (1/1) ... [2020-10-23 18:44:16,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:15" (1/1) ... [2020-10-23 18:44:16,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:15" (1/1) ... [2020-10-23 18:44:16,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:44:16,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:44:16,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:44:16,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:44:16,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:15" (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 [2020-10-23 18:44:16,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:44:16,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:44:16,150 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:44:16,150 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-23 18:44:16,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 18:44:16,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:44:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:44:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:44:16,151 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 18:44:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 18:44:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:44:16,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:44:16,153 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-23 18:44:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 18:44:16,154 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:44:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:44:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:44:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:44:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:44:16,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:44:16,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:44:16,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:44:16,477 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:44:16,478 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 18:44:16,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:16 BoogieIcfgContainer [2020-10-23 18:44:16,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:44:16,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:44:16,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:44:16,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:44:16,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:44:15" (1/3) ... [2020-10-23 18:44:16,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca887a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:16, skipping insertion in model container [2020-10-23 18:44:16,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:44:15" (2/3) ... [2020-10-23 18:44:16,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ca887a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:44:16, skipping insertion in model container [2020-10-23 18:44:16,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:44:16" (3/3) ... [2020-10-23 18:44:16,489 INFO L111 eAbstractionObserver]: Analyzing ICFG id_trans.i [2020-10-23 18:44:16,502 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:44:16,512 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:44:16,535 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:44:16,564 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:44:16,565 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:44:16,565 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:44:16,565 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:44:16,565 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:44:16,565 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:44:16,566 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:44:16,566 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:44:16,582 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-23 18:44:16,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-23 18:44:16,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:16,588 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:16,589 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:16,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:16,595 INFO L82 PathProgramCache]: Analyzing trace with hash 997718721, now seen corresponding path program 1 times [2020-10-23 18:44:16,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:16,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326621717] [2020-10-23 18:44:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:16,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:16,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:16,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326621717] [2020-10-23 18:44:16,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:16,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:44:16,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856540691] [2020-10-23 18:44:16,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:44:16,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:16,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:44:16,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:44:16,947 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 6 states. [2020-10-23 18:44:17,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:17,446 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2020-10-23 18:44:17,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 18:44:17,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-23 18:44:17,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:17,457 INFO L225 Difference]: With dead ends: 54 [2020-10-23 18:44:17,457 INFO L226 Difference]: Without dead ends: 25 [2020-10-23 18:44:17,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:44:17,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-23 18:44:17,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-23 18:44:17,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-23 18:44:17,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-23 18:44:17,508 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 14 [2020-10-23 18:44:17,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:17,509 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-23 18:44:17,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:44:17,509 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-23 18:44:17,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-23 18:44:17,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:17,511 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:17,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:44:17,511 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:17,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:17,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1644703156, now seen corresponding path program 1 times [2020-10-23 18:44:17,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:17,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850641158] [2020-10-23 18:44:17,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:17,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:44:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:17,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 18:44:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:44:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:44:17,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850641158] [2020-10-23 18:44:17,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:44:17,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 18:44:17,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851649121] [2020-10-23 18:44:17,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:44:17,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:44:17,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:44:17,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:44:17,663 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 6 states. [2020-10-23 18:44:17,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:44:17,911 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2020-10-23 18:44:17,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 18:44:17,912 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-23 18:44:17,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:44:17,913 INFO L225 Difference]: With dead ends: 33 [2020-10-23 18:44:17,913 INFO L226 Difference]: Without dead ends: 29 [2020-10-23 18:44:17,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:44:17,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-23 18:44:17,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-23 18:44:17,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-23 18:44:17,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-10-23 18:44:17,925 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 19 [2020-10-23 18:44:17,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:44:17,926 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-10-23 18:44:17,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:44:17,926 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-10-23 18:44:17,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-23 18:44:17,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:44:17,928 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:44:17,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:44:17,928 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:44:17,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:44:17,929 INFO L82 PathProgramCache]: Analyzing trace with hash 211368340, now seen corresponding path program 1 times [2020-10-23 18:44:17,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:44:17,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399334512] [2020-10-23 18:44:17,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:44:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:44:17,971 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:44:18,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:44:18,006 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:44:18,039 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:44:18,039 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:44:18,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:44:18,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:44:18 BoogieIcfgContainer [2020-10-23 18:44:18,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:44:18,074 INFO L168 Benchmark]: Toolchain (without parser) took 2446.48 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 123.6 MB in the end (delta: 3.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:18,075 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 125.8 MB. Free memory was 103.7 MB in the beginning and 103.6 MB in the end (delta: 67.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:44:18,076 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.03 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 117.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:18,077 INFO L168 Benchmark]: Boogie Preprocessor took 63.57 ms. Allocated memory is still 151.0 MB. Free memory was 117.2 MB in the beginning and 115.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:18,078 INFO L168 Benchmark]: RCFGBuilder took 415.35 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 131.5 MB in the end (delta: -15.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:18,079 INFO L168 Benchmark]: TraceAbstraction took 1589.96 ms. Allocated memory is still 151.0 MB. Free memory was 131.1 MB in the beginning and 123.6 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. [2020-10-23 18:44:18,083 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 125.8 MB. Free memory was 103.7 MB in the beginning and 103.6 MB in the end (delta: 67.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 361.03 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 117.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.57 ms. Allocated memory is still 151.0 MB. Free memory was 117.2 MB in the beginning and 115.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 415.35 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 131.5 MB in the end (delta: -15.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1589.96 ms. Allocated memory is still 151.0 MB. Free memory was 131.1 MB in the beginning and 123.6 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L25] int idBitLength, material_length, nlen; [L26] int j, k; [L27] nlen = __VERIFIER_nondet_int() [L28] idBitLength = __VERIFIER_nondet_int() [L29] material_length = __VERIFIER_nondet_int() [L30] COND FALSE !(!( nlen == idBitLength / 32 )) [L31] j = 0 VAL [idBitLength=17, j=0, material_length=5, nlen=0] [L31] COND TRUE (j < idBitLength / 8) && (j < material_length) VAL [idBitLength=17, j=0, material_length=5, nlen=0] [L32] CALL __VERIFIER_assert( 0 <= j) VAL [\old(cond)=1] [L18] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L32] RET __VERIFIER_assert( 0 <= j) VAL [idBitLength=17, j=0, material_length=5, nlen=0] [L33] CALL __VERIFIER_assert( j < material_length ) VAL [\old(cond)=1] [L18] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L33] RET __VERIFIER_assert( j < material_length ) VAL [idBitLength=17, j=0, material_length=5, nlen=0] [L34] CALL __VERIFIER_assert( 0 <= j/4 ) VAL [\old(cond)=1] [L18] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L34] RET __VERIFIER_assert( 0 <= j/4 ) VAL [idBitLength=17, j=0, material_length=5, nlen=0] [L35] CALL __VERIFIER_assert( j/4 < nlen) VAL [\old(cond)=0] [L18] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "assert.h", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 38 SDslu, 60 SDs, 0 SdLazy, 116 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 1547 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...