/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 0.1.25-3af5e1f [2020-09-04 13:29:19,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:29:19,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:29:19,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:29:19,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:29:19,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:29:19,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:29:19,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:29:19,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:29:19,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:29:19,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:29:19,815 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:29:19,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:29:19,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:29:19,821 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:29:19,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:29:19,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:29:19,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:29:19,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:29:19,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:29:19,838 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:29:19,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:29:19,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:29:19,842 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:29:19,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:29:19,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:29:19,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:29:19,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:29:19,862 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:29:19,901 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:29:19,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:29:19,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:29:19,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:29:19,903 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:29:19,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:29:19,903 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:29:19,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:29:19,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:29:19,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:29:19,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:29:19,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:29:19,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:29:19,905 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:29:19,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:29:19,905 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:29:19,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:29:19,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:29:19,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:29:19,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:29:19,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:29:19,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:29:19,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:29:19,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:29:19,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:29:19,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:29:19,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:29:19,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:29:19,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:29:19,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:29:20,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:29:20,374 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:29:20,378 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:29:20,380 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:29:20,381 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:29:20,382 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test10.c [2020-09-04 13:29:20,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e18e9a745/afc9cc99816c4a95ab8655f630f3d049/FLAGd3200ac17 [2020-09-04 13:29:20,997 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:29:20,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test10.c [2020-09-04 13:29:21,006 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e18e9a745/afc9cc99816c4a95ab8655f630f3d049/FLAGd3200ac17 [2020-09-04 13:29:21,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e18e9a745/afc9cc99816c4a95ab8655f630f3d049 [2020-09-04 13:29:21,365 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:29:21,367 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:29:21,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:29:21,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:29:21,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:29:21,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:29:21" (1/1) ... [2020-09-04 13:29:21,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:21, skipping insertion in model container [2020-09-04 13:29:21,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:29:21" (1/1) ... [2020-09-04 13:29:21,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:29:21,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:29:21,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:29:21,655 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:29:21,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:29:21,692 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:29:21,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:21 WrapperNode [2020-09-04 13:29:21,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:29:21,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:29:21,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:29:21,694 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:29:21,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:21" (1/1) ... [2020-09-04 13:29:21,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:21" (1/1) ... [2020-09-04 13:29:21,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:21" (1/1) ... [2020-09-04 13:29:21,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:21" (1/1) ... [2020-09-04 13:29:21,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:21" (1/1) ... [2020-09-04 13:29:21,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:21" (1/1) ... [2020-09-04 13:29:21,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:21" (1/1) ... [2020-09-04 13:29:21,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:29:21,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:29:21,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:29:21,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:29:21,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:29:21,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:29:21,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:29:21,910 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-09-04 13:29:21,910 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:29:21,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:29:21,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:29:21,911 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-09-04 13:29:21,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 13:29:21,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 13:29:21,911 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:29:21,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 13:29:21,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 13:29:21,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:29:21,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 13:29:21,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 13:29:21,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-04 13:29:21,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:29:21,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 13:29:22,302 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:29:22,302 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 13:29:22,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:29:22 BoogieIcfgContainer [2020-09-04 13:29:22,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:29:22,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:29:22,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:29:22,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:29:22,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:29:21" (1/3) ... [2020-09-04 13:29:22,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e4b700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:29:22, skipping insertion in model container [2020-09-04 13:29:22,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:29:21" (2/3) ... [2020-09-04 13:29:22,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e4b700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:29:22, skipping insertion in model container [2020-09-04 13:29:22,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:29:22" (3/3) ... [2020-09-04 13:29:22,318 INFO L109 eAbstractionObserver]: Analyzing ICFG test10.c [2020-09-04 13:29:22,328 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:29:22,337 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:29:22,357 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:29:22,382 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:29:22,382 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:29:22,382 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:29:22,382 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:29:22,383 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:29:22,383 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:29:22,383 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:29:22,383 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:29:22,403 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-09-04 13:29:22,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-04 13:29:22,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:29:22,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:29:22,411 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:29:22,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:29:22,418 INFO L82 PathProgramCache]: Analyzing trace with hash -320886355, now seen corresponding path program 1 times [2020-09-04 13:29:22,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:29:22,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551240296] [2020-09-04 13:29:22,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:29:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:23,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:29:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:23,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:29:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:29:23,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551240296] [2020-09-04 13:29:23,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:29:23,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 13:29:23,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980802209] [2020-09-04 13:29:23,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 13:29:23,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:29:23,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 13:29:23,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-04 13:29:23,474 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 9 states. [2020-09-04 13:29:24,010 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-09-04 13:29:24,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:29:24,279 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-09-04 13:29:24,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 13:29:24,281 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-09-04 13:29:24,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:29:24,294 INFO L225 Difference]: With dead ends: 26 [2020-09-04 13:29:24,294 INFO L226 Difference]: Without dead ends: 15 [2020-09-04 13:29:24,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-09-04 13:29:24,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-09-04 13:29:24,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-09-04 13:29:24,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-09-04 13:29:24,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-09-04 13:29:24,351 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2020-09-04 13:29:24,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:29:24,352 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-09-04 13:29:24,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 13:29:24,352 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-09-04 13:29:24,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-04 13:29:24,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:29:24,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:29:24,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:29:24,354 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:29:24,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:29:24,354 INFO L82 PathProgramCache]: Analyzing trace with hash -320884433, now seen corresponding path program 1 times [2020-09-04 13:29:24,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:29:24,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386816742] [2020-09-04 13:29:24,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:29:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:24,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:29:24,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:24,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:29:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:29:24,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:29:24,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386816742] [2020-09-04 13:29:24,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:29:24,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 13:29:24,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261502218] [2020-09-04 13:29:24,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 13:29:24,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:29:24,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 13:29:24,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-04 13:29:24,655 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 10 states. [2020-09-04 13:29:25,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:29:25,126 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2020-09-04 13:29:25,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 13:29:25,126 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-09-04 13:29:25,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:29:25,127 INFO L225 Difference]: With dead ends: 15 [2020-09-04 13:29:25,127 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:29:25,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-09-04 13:29:25,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:29:25,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:29:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:29:25,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:29:25,130 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-09-04 13:29:25,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:29:25,130 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:29:25,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 13:29:25,130 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:29:25,131 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:29:25,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:29:25,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:29:25,579 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 42 [2020-09-04 13:29:25,651 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:29:25,652 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |~#p1~0.base| |old(~#p1~0.base)|) (= |old(~#a~0.offset)| |~#a~0.offset|) (= |old(#length)| |#length|) (= ~pp2~0.base |old(~pp2~0.base)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |old(~pp1~0.base)| ~pp1~0.base) (= |old(~#a~0.base)| |~#a~0.base|) (= |old(~#b~0.offset)| |~#b~0.offset|) (= |old(#valid)| |#valid|) (= |old(#NULL.base)| |#NULL.base|) (= |old(~#p2~0.base)| |~#p2~0.base|) (= |old(~#p2~0.offset)| |~#p2~0.offset|) (= |old(~pp2~0.offset)| ~pp2~0.offset) (= |old(~pp1~0.offset)| ~pp1~0.offset) (= |#NULL.offset| |old(#NULL.offset)|) (= |~#p1~0.offset| |old(~#p1~0.offset)|)) [2020-09-04 13:29:25,652 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:29:25,652 INFO L268 CegarLoopResult]: For program point fEXIT(lines 9 14) no Hoare annotation was computed. [2020-09-04 13:29:25,653 INFO L264 CegarLoopResult]: At program point fENTRY(lines 9 14) 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|)) [2020-09-04 13:29:25,653 INFO L268 CegarLoopResult]: For program point fFINAL(lines 9 14) no Hoare annotation was computed. [2020-09-04 13:29:25,653 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:29:25,653 INFO L264 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|))) [2020-09-04 13:29:25,653 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:29:25,653 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:29:25,654 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 47) no Hoare annotation was computed. [2020-09-04 13:29:25,654 INFO L264 CegarLoopResult]: At program point L31(line 31) 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|)) [2020-09-04 13:29:25,654 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-04 13:29:25,655 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 16 49) 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|)) [2020-09-04 13:29:25,655 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 49) no Hoare annotation was computed. [2020-09-04 13:29:25,655 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 49) no Hoare annotation was computed. [2020-09-04 13:29:25,655 INFO L264 CegarLoopResult]: At program point L42(lines 16 49) 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|)) [2020-09-04 13:29:25,656 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-04 13:29:25,656 INFO L268 CegarLoopResult]: For program point L41-2(lines 41 43) no Hoare annotation was computed. [2020-09-04 13:29:25,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:29:25 BoogieIcfgContainer [2020-09-04 13:29:25,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:29:25,685 INFO L168 Benchmark]: Toolchain (without parser) took 4317.75 ms. Allocated memory was 140.0 MB in the beginning and 247.5 MB in the end (delta: 107.5 MB). Free memory was 103.2 MB in the beginning and 177.6 MB in the end (delta: -74.4 MB). Peak memory consumption was 114.6 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:25,686 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:29:25,687 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.63 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 92.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:25,688 INFO L168 Benchmark]: Boogie Preprocessor took 128.88 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 181.4 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:25,689 INFO L168 Benchmark]: RCFGBuilder took 484.75 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 161.0 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:25,690 INFO L168 Benchmark]: TraceAbstraction took 3373.44 ms. Allocated memory was 203.4 MB in the beginning and 247.5 MB in the end (delta: 44.0 MB). Free memory was 160.3 MB in the beginning and 177.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. [2020-09-04 13:29:25,694 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 325.63 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 92.7 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.88 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 181.4 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 484.75 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 161.0 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3373.44 ms. Allocated memory was 203.4 MB in the beginning and 247.5 MB in the end (delta: 44.0 MB). Free memory was 160.3 MB in the beginning and 177.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: 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: 16]: 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 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 22 SDslu, 56 SDs, 0 SdLazy, 93 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 248 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 200 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 5668 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...