/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/1_3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:17:57,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:17:57,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:17:57,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:17:57,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:17:57,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:17:57,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:17:57,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:17:57,919 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:17:57,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:17:57,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:17:57,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:17:57,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:17:57,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:17:57,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:17:57,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:17:57,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:17:57,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:17:57,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:17:57,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:17:57,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:17:57,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:17:57,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:17:57,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:17:57,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 22:17:57,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:17:57,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:17:57,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:17:57,975 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 22:17:57,991 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:17:57,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:17:57,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:17:57,994 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:17:57,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:17:57,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:17:57,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:17:57,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:17:57,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:17:57,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:17:57,996 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:17:57,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:17:57,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:17:57,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:17:57,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:17:57,998 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:17:57,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:17:57,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:17:57,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:17:57,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:17:57,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:17:57,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:17:57,999 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-08-22 22:17:58,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:17:58,293 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:17:58,299 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:17:58,301 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:17:58,302 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:17:58,302 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/1_3.i [2020-08-22 22:17:58,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4ab8ee9/7c7174cdd00f4531a5f4a27c9b36842a/FLAG063552a88 [2020-08-22 22:17:58,833 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:17:58,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/1_3.i [2020-08-22 22:17:58,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4ab8ee9/7c7174cdd00f4531a5f4a27c9b36842a/FLAG063552a88 [2020-08-22 22:17:59,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4ab8ee9/7c7174cdd00f4531a5f4a27c9b36842a [2020-08-22 22:17:59,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:17:59,280 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:17:59,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:17:59,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:17:59,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:17:59,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:17:59" (1/1) ... [2020-08-22 22:17:59,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f8e2c60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:59, skipping insertion in model container [2020-08-22 22:17:59,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:17:59" (1/1) ... [2020-08-22 22:17:59,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:17:59,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:17:59,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:17:59,503 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:17:59,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:17:59,540 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:17:59,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:59 WrapperNode [2020-08-22 22:17:59,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:17:59,542 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:17:59,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:17:59,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:17:59,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:59" (1/1) ... [2020-08-22 22:17:59,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:59" (1/1) ... [2020-08-22 22:17:59,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:59" (1/1) ... [2020-08-22 22:17:59,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:59" (1/1) ... [2020-08-22 22:17:59,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:59" (1/1) ... [2020-08-22 22:17:59,665 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:59" (1/1) ... [2020-08-22 22:17:59,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:59" (1/1) ... [2020-08-22 22:17:59,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:17:59,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:17:59,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:17:59,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:17:59,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:59" (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 [2020-08-22 22:17:59,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:17:59,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:17:59,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-22 22:17:59,733 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2020-08-22 22:17:59,733 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2020-08-22 22:17:59,733 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2020-08-22 22:17:59,733 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:17:59,733 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:17:59,734 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-22 22:17:59,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:17:59,734 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 22:17:59,734 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2020-08-22 22:17:59,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 22:17:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 22:17:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2020-08-22 22:17:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2020-08-22 22:17:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 22:17:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:17:59,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:17:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:17:59,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 22:17:59,991 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:17:59,991 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 22:17:59,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:17:59 BoogieIcfgContainer [2020-08-22 22:17:59,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:18:00,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:18:00,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:18:00,003 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:18:00,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:17:59" (1/3) ... [2020-08-22 22:18:00,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f92d4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:18:00, skipping insertion in model container [2020-08-22 22:18:00,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:17:59" (2/3) ... [2020-08-22 22:18:00,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f92d4f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:18:00, skipping insertion in model container [2020-08-22 22:18:00,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:17:59" (3/3) ... [2020-08-22 22:18:00,008 INFO L109 eAbstractionObserver]: Analyzing ICFG 1_3.i [2020-08-22 22:18:00,022 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:18:00,033 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:18:00,052 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:18:00,080 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:18:00,080 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:18:00,080 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:18:00,081 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:18:00,081 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:18:00,081 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:18:00,081 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:18:00,081 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:18:00,100 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-22 22:18:00,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 22:18:00,120 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:18:00,121 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:18:00,122 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:18:00,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:18:00,129 INFO L82 PathProgramCache]: Analyzing trace with hash 538172514, now seen corresponding path program 1 times [2020-08-22 22:18:00,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:18:00,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076913998] [2020-08-22 22:18:00,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:18:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:00,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:18:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:00,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 22:18:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:00,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:18:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:18:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:18:00,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076913998] [2020-08-22 22:18:00,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:18:00,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 22:18:00,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923551324] [2020-08-22 22:18:00,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 22:18:00,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:18:00,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 22:18:00,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-08-22 22:18:00,741 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 11 states. [2020-08-22 22:18:01,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:18:01,222 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-08-22 22:18:01,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 22:18:01,224 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-08-22 22:18:01,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:18:01,234 INFO L225 Difference]: With dead ends: 64 [2020-08-22 22:18:01,234 INFO L226 Difference]: Without dead ends: 39 [2020-08-22 22:18:01,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-08-22 22:18:01,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-22 22:18:01,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-22 22:18:01,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-22 22:18:01,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 38 transitions. [2020-08-22 22:18:01,293 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 38 transitions. Word has length 30 [2020-08-22 22:18:01,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:18:01,294 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 38 transitions. [2020-08-22 22:18:01,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 22:18:01,294 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 38 transitions. [2020-08-22 22:18:01,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 22:18:01,296 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:18:01,296 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:18:01,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:18:01,297 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:18:01,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:18:01,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1533664090, now seen corresponding path program 1 times [2020-08-22 22:18:01,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:18:01,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100271110] [2020-08-22 22:18:01,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:18:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:18:01,319 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:18:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 22:18:01,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 22:18:01,379 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 22:18:01,379 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 22:18:01,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:18:01,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:18:01 BoogieIcfgContainer [2020-08-22 22:18:01,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:18:01,423 INFO L168 Benchmark]: Toolchain (without parser) took 2142.16 ms. Allocated memory was 140.0 MB in the beginning and 234.9 MB in the end (delta: 94.9 MB). Free memory was 103.6 MB in the beginning and 190.5 MB in the end (delta: -86.9 MB). Peak memory consumption was 8.0 MB. Max. memory is 7.1 GB. [2020-08-22 22:18:01,425 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 22:18:01,426 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.18 ms. Allocated memory is still 140.0 MB. Free memory was 103.2 MB in the beginning and 93.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-22 22:18:01,427 INFO L168 Benchmark]: Boogie Preprocessor took 126.82 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 93.1 MB in the beginning and 181.6 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-08-22 22:18:01,428 INFO L168 Benchmark]: RCFGBuilder took 329.13 ms. Allocated memory is still 203.9 MB. Free memory was 181.6 MB in the beginning and 165.8 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2020-08-22 22:18:01,429 INFO L168 Benchmark]: TraceAbstraction took 1420.63 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 165.8 MB in the beginning and 190.5 MB in the end (delta: -24.7 MB). Peak memory consumption was 6.2 MB. Max. memory is 7.1 GB. [2020-08-22 22:18:01,433 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 259.18 ms. Allocated memory is still 140.0 MB. Free memory was 103.2 MB in the beginning and 93.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.82 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 93.1 MB in the beginning and 181.6 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 329.13 ms. Allocated memory is still 203.9 MB. Free memory was 181.6 MB in the beginning and 165.8 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1420.63 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 165.8 MB in the beginning and 190.5 MB in the end (delta: -24.7 MB). Peak memory consumption was 6.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L50] rr * ptr1 = 0; VAL [ptr1={0:0}] [L51] CALL, EXPR getPtr() [L37] CALL, EXPR getrr() [L30] rr * r = (rr *)malloc(sizeof *r); VAL [malloc(sizeof *r)={-1:0}, r={-1:0}] [L31] r -> state = 0 VAL [malloc(sizeof *r)={-1:0}, r={-1:0}] [L32] return r; VAL [\result={-1:0}, malloc(sizeof *r)={-1:0}, r={-1:0}] [L37] RET, EXPR getrr() VAL [getrr()={-1:0}] [L37] rr * r = getrr(); VAL [getrr()={-1:0}, r={-1:0}] [L38] r -> state = 1 VAL [r={-1:0}] [L39] return r; VAL [\result={-1:0}, r={-1:0}] [L51] RET, EXPR getPtr() VAL [getPtr()={-1:0}, ptr1={0:0}] [L51] ptr1 = getPtr() VAL [getPtr()={-1:0}, ptr1={-1:0}] [L52] CALL freePtr(ptr1) VAL [ptr={-1:0}] [L44] EXPR ptr -> state VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=1] [L44] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=1] [L45] ptr -> state = 2 VAL [ptr={-1:0}, ptr={-1:0}] [L52] RET freePtr(ptr1) VAL [ptr1={-1:0}] [L54] CALL freePtr(ptr1) VAL [ptr={-1:0}] [L44] EXPR ptr -> state VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=2] [L44] (ptr -> state == 1) ? (0) : __blast_assert () VAL [ptr={-1:0}, ptr={-1:0}, ptr -> state=2] [L44] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 35 SDslu, 157 SDs, 0 SdLazy, 178 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 3074 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 incorrect! Received shutdown request...