/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:28:52,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:28:52,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:28:52,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-06 22:28:52,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:28:52,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:28:52,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:28:52,122 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 [2020-11-06 22:28:52,195 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:28:52,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:28:52,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:28:52,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:28:52,199 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:28:52,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:28:52,200 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:28:52,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:28:52,200 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:28:52,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:28:52,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:28:52,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:28:52,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:28:52,201 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:28:52,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:28:52,201 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:28:52,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:28:52,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:28:52,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:28:52,202 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:28:52,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:28:52,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:28:52,203 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:28:52,203 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:28:52,204 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:28:52,204 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:28:52,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:28:52,204 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:28:52,204 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:28:52,204 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:28:52,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:28:52,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:28:52,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:28:52,658 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:28:52,658 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:28:52,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test10.c [2020-11-06 22:28:52,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2aa0f325/2ca7b973570c46f395ba02883ca8fbf0/FLAG5eb237a0a [2020-11-06 22:28:53,321 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:28:53,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test10.c [2020-11-06 22:28:53,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2aa0f325/2ca7b973570c46f395ba02883ca8fbf0/FLAG5eb237a0a [2020-11-06 22:28:53,674 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e2aa0f325/2ca7b973570c46f395ba02883ca8fbf0 [2020-11-06 22:28:53,677 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:28:53,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:28:53,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:28:53,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:28:53,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:28:53,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:53" (1/1) ... [2020-11-06 22:28:53,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37b0d402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:53, skipping insertion in model container [2020-11-06 22:28:53,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:53" (1/1) ... [2020-11-06 22:28:53,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:28:53,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:28:53,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:28:53,885 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:28:53,904 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:28:53,922 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:28:53,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:53 WrapperNode [2020-11-06 22:28:53,923 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:28:53,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:28:53,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:28:53,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:28:53,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:53" (1/1) ... [2020-11-06 22:28:53,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:53" (1/1) ... [2020-11-06 22:28:53,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:53" (1/1) ... [2020-11-06 22:28:53,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:53" (1/1) ... [2020-11-06 22:28:53,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:53" (1/1) ... [2020-11-06 22:28:53,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:53" (1/1) ... [2020-11-06 22:28:53,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:53" (1/1) ... [2020-11-06 22:28:53,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:28:53,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:28:53,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:28:53,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:28:53,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:53" (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 [2020-11-06 22:28:54,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:28:54,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:28:54,042 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:28:54,042 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-11-06 22:28:54,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:28:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:28:54,043 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:28:54,044 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:28:54,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:28:54,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:28:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-11-06 22:28:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 22:28:54,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 22:28:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:28:54,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:28:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:28:54,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:28:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:28:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-06 22:28:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:28:54,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:28:54,630 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:28:54,631 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-06 22:28:54,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:54 BoogieIcfgContainer [2020-11-06 22:28:54,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:28:54,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:28:54,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:28:54,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:28:54,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:28:53" (1/3) ... [2020-11-06 22:28:54,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5b8bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:54, skipping insertion in model container [2020-11-06 22:28:54,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:53" (2/3) ... [2020-11-06 22:28:54,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c5b8bd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:54, skipping insertion in model container [2020-11-06 22:28:54,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:54" (3/3) ... [2020-11-06 22:28:54,641 INFO L111 eAbstractionObserver]: Analyzing ICFG test10.c [2020-11-06 22:28:54,656 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:28:54,660 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:28:54,672 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:28:54,700 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:28:54,701 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:28:54,701 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:28:54,701 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:28:54,701 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:28:54,701 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:28:54,701 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:28:54,702 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:28:54,719 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-11-06 22:28:54,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-06 22:28:54,724 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:28:54,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:28:54,726 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:28:54,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:28:54,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1706744651, now seen corresponding path program 1 times [2020-11-06 22:28:54,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:28:54,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593939626] [2020-11-06 22:28:54,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:28:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:55,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:28:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:55,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:28:55,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:55,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:28:55,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593939626] [2020-11-06 22:28:55,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:28:55,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-06 22:28:55,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712458353] [2020-11-06 22:28:55,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-06 22:28:55,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:28:55,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-06 22:28:55,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-06 22:28:55,712 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 9 states. [2020-11-06 22:28:56,048 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-11-06 22:28:56,511 WARN L194 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2020-11-06 22:28:56,924 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-06 22:28:56,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:28:56,947 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-11-06 22:28:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 22:28:56,949 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-11-06 22:28:56,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:28:56,957 INFO L225 Difference]: With dead ends: 31 [2020-11-06 22:28:56,958 INFO L226 Difference]: Without dead ends: 16 [2020-11-06 22:28:56,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-11-06 22:28:56,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-06 22:28:56,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-06 22:28:56,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-06 22:28:56,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-06 22:28:57,000 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2020-11-06 22:28:57,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:28:57,001 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-06 22:28:57,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-06 22:28:57,001 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-06 22:28:57,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-06 22:28:57,002 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:28:57,002 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:28:57,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:28:57,002 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:28:57,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:28:57,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1706804233, now seen corresponding path program 1 times [2020-11-06 22:28:57,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:28:57,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891386029] [2020-11-06 22:28:57,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:28:57,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:57,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:28:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:57,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 22:28:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:57,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:28:57,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891386029] [2020-11-06 22:28:57,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:28:57,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-06 22:28:57,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607573456] [2020-11-06 22:28:57,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:28:57,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:28:57,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:28:57,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:28:57,356 INFO L87 Difference]: Start difference. First operand 16 states and 15 transitions. Second operand 10 states. [2020-11-06 22:28:57,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:28:57,949 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2020-11-06 22:28:57,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-06 22:28:57,949 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-11-06 22:28:57,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:28:57,950 INFO L225 Difference]: With dead ends: 16 [2020-11-06 22:28:57,950 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:28:57,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-11-06 22:28:57,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:28:57,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:28:57,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:28:57,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:28:57,953 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-06 22:28:57,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:28:57,953 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:28:57,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:28:57,953 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:28:57,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:28:57,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:28:57,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:28:58,153 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 36 [2020-11-06 22:28:58,346 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-11-06 22:28:58,560 WARN L194 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 42 [2020-11-06 22:28:58,565 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-11-06 22:28:58,565 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-06 22:28:58,565 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-11-06 22:28:58,566 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-06 22:28:58,566 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:28:58,568 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#p1~0.base| |old(~#p1~0.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(~#a~0.offset)| |~#a~0.offset|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= ~pp2~0.base |old(~pp2~0.base)|) (= |old(~pp1~0.base)| ~pp1~0.base) (= |old(~#a~0.base)| |~#a~0.base|) (= |old(#t~string4.offset)| |#t~string4.offset|) (= |old(~#b~0.offset)| |~#b~0.offset|) (= |old(#valid)| |#valid|) (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.base| |old(#t~string5.base)|) (= |old(~#p2~0.base)| |~#p2~0.base|) (= |old(~pp2~0.offset)| ~pp2~0.offset) (= |old(~#p2~0.offset)| |~#p2~0.offset|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |old(~pp1~0.offset)| ~pp1~0.offset) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#p1~0.offset| |old(~#p1~0.offset)|)) [2020-11-06 22:28:58,569 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:28:58,570 INFO L266 CegarLoopResult]: For program point fEXIT(lines 11 16) no Hoare annotation was computed. [2020-11-06 22:28:58,570 INFO L262 CegarLoopResult]: At program point fENTRY(lines 11 16) the Hoare annotation is: (or (not (= |~#p1~0.offset| ~pp1~0.offset)) (= |~#b~0.base| ~pp1~0.base) (not (= (select (select |old(#memory_$Pointer$.offset)| |old(~pp2~0.base)|) |old(~pp2~0.offset)|) |~#b~0.offset|)) (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(~pp2~0.offset)| ~pp2~0.offset) (= |#memory_int| |old(#memory_int)|) (= ~pp2~0.base |old(~pp2~0.base)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (not (= |~#b~0.base| (select (select |old(#memory_$Pointer$.base)| |old(~pp2~0.base)|) |old(~pp2~0.offset)|))) (not (= |~#p1~0.base| ~pp1~0.base)) (= |~#p1~0.base| |~#a~0.base|) (= |~#b~0.base| |~#p2~0.base|) (= |~#p2~0.base| |~#a~0.base|) (= |~#b~0.base| |~#a~0.base|)) [2020-11-06 22:28:58,573 INFO L266 CegarLoopResult]: For program point fFINAL(lines 11 16) no Hoare annotation was computed. [2020-11-06 22:28:58,573 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:28:58,573 INFO L262 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (not (= |~#b~0.base| |~#p1~0.base|)) (= ~pp2~0.base ~pp1~0.base) (not (= |~#p2~0.base| |~#a~0.base|)) (= ~pp2~0.offset ~pp1~0.offset) (not (= |~#b~0.base| |~#p2~0.base|)) (not (= |~#b~0.base| |~#a~0.base|)) (not (= |~#p1~0.base| |~#a~0.base|))) [2020-11-06 22:28:58,574 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:28:58,574 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:28:58,574 INFO L262 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (or (not (= |old(~pp2~0.offset)| |old(~pp1~0.offset)|)) (= |~#p1~0.base| |~#a~0.base|) (not (= |old(~pp1~0.base)| |old(~pp2~0.base)|)) (= |~#b~0.base| |~#p2~0.base|) (and (= (select (select |#memory_$Pointer$.offset| ~pp2~0.base) ~pp2~0.offset) |~#b~0.offset|) (= |~#p1~0.offset| ~pp1~0.offset) (= |~#p1~0.base| ~pp1~0.base) (= |~#b~0.base| (select (select |#memory_$Pointer$.base| ~pp2~0.base) ~pp2~0.offset))) (= |~#p2~0.base| |~#a~0.base|) (= |~#b~0.base| |~#a~0.base|) (= |~#b~0.base| |~#p1~0.base|)) [2020-11-06 22:28:58,574 INFO L266 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-11-06 22:28:58,574 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 18 51) the Hoare annotation is: (or (not (= |old(~pp2~0.offset)| |old(~pp1~0.offset)|)) (= |~#p1~0.base| |~#a~0.base|) (not (= |old(~pp1~0.base)| |old(~pp2~0.base)|)) (= |~#b~0.base| |~#p2~0.base|) (= |~#p2~0.base| |~#a~0.base|) (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |old(~pp1~0.offset)| ~pp1~0.offset) (= ~pp2~0.base |old(~pp2~0.base)|) (= ~pp2~0.offset ~pp1~0.offset) (= |old(~pp1~0.base)| ~pp1~0.base) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (= |~#b~0.base| |~#a~0.base|) (= |~#b~0.base| |~#p1~0.base|)) [2020-11-06 22:28:58,574 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 18 51) no Hoare annotation was computed. [2020-11-06 22:28:58,574 INFO L266 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-11-06 22:28:58,575 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 18 51) no Hoare annotation was computed. [2020-11-06 22:28:58,575 INFO L262 CegarLoopResult]: At program point L44(lines 18 51) the Hoare annotation is: (or (= |~#p2~0.base| |~#b~0.base|) (not (= |old(~pp2~0.offset)| |old(~pp1~0.offset)|)) (= |~#a~0.base| |~#p1~0.base|) (not (= |old(~pp1~0.base)| |old(~pp2~0.base)|)) (= |~#p2~0.base| |~#a~0.base|) (= |~#a~0.base| |~#b~0.base|) (= |~#p1~0.base| |~#b~0.base|)) [2020-11-06 22:28:58,575 INFO L266 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-11-06 22:28:58,575 INFO L266 CegarLoopResult]: For program point L43-2(lines 43 45) no Hoare annotation was computed. [2020-11-06 22:28:58,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:28:58 BoogieIcfgContainer [2020-11-06 22:28:58,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:28:58,595 INFO L168 Benchmark]: Toolchain (without parser) took 4915.55 ms. Allocated memory was 162.5 MB in the beginning and 216.0 MB in the end (delta: 53.5 MB). Free memory was 137.3 MB in the beginning and 105.5 MB in the end (delta: 31.8 MB). Peak memory consumption was 117.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:28:58,596 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 162.5 MB. Free memory is still 137.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:28:58,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.76 ms. Allocated memory is still 162.5 MB. Free memory was 136.6 MB in the beginning and 127.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:28:58,598 INFO L168 Benchmark]: Boogie Preprocessor took 37.22 ms. Allocated memory is still 162.5 MB. Free memory was 127.0 MB in the beginning and 125.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:28:58,599 INFO L168 Benchmark]: RCFGBuilder took 670.45 ms. Allocated memory is still 162.5 MB. Free memory was 125.4 MB in the beginning and 105.7 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-11-06 22:28:58,600 INFO L168 Benchmark]: TraceAbstraction took 3959.23 ms. Allocated memory was 162.5 MB in the beginning and 216.0 MB in the end (delta: 53.5 MB). Free memory was 105.2 MB in the beginning and 105.5 MB in the end (delta: -279.1 kB). Peak memory consumption was 85.6 MB. Max. memory is 8.0 GB. [2020-11-06 22:28:58,604 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 162.5 MB. Free memory is still 137.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 237.76 ms. Allocated memory is still 162.5 MB. Free memory was 136.6 MB in the beginning and 127.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.22 ms. Allocated memory is still 162.5 MB. Free memory was 127.0 MB in the beginning and 125.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 670.45 ms. Allocated memory is still 162.5 MB. Free memory was 125.4 MB in the beginning and 105.7 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3959.23 ms. Allocated memory was 162.5 MB in the beginning and 216.0 MB in the end (delta: 53.5 MB). Free memory was 105.2 MB in the beginning and 105.5 MB in the end (delta: -279.1 kB). Peak memory consumption was 85.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: (((((p2 == b || !(\old(pp2) == \old(pp1))) || a == p1) || !(\old(pp1) == \old(pp2))) || p2 == a) || a == b) || p1 == b - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 24 SDslu, 53 SDs, 0 SdLazy, 97 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 267 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 242 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 6636 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...