/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/1_3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:39:09,815 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:39:09,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:39:09,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:39:09,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:39:09,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:39:09,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:39:09,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:39:09,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:39:09,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:39:09,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:39:09,909 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:39:09,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:39:09,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:39:09,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:39:09,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:39:09,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:39:09,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:39:09,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:39:09,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:39:09,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:39:09,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:39:09,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:39:09,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:39:09,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:39:09,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:39:09,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:39:09,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:39:09,967 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:39:09,994 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:39:09,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:39:09,998 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:39:09,998 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:39:09,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:39:09,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:39:09,999 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:39:10,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:39:10,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:39:10,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:39:10,002 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:39:10,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:39:10,002 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:39:10,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:39:10,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:39:10,003 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:39:10,004 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:39:10,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:39:10,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:39:10,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:39:10,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:39:10,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:39:10,005 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:39:10,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:39:10,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:39:10,540 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:39:10,542 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:39:10,543 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:39:10,544 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/1_3.i [2020-09-04 16:39:10,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f02650cfc/0c8ee680ab1c47658f22a769eca89c39/FLAG8119ce301 [2020-09-04 16:39:11,304 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:39:11,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/1_3.i [2020-09-04 16:39:11,315 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f02650cfc/0c8ee680ab1c47658f22a769eca89c39/FLAG8119ce301 [2020-09-04 16:39:11,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f02650cfc/0c8ee680ab1c47658f22a769eca89c39 [2020-09-04 16:39:11,619 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:39:11,623 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:39:11,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:39:11,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:39:11,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:39:11,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:39:11" (1/1) ... [2020-09-04 16:39:11,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d04f3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:11, skipping insertion in model container [2020-09-04 16:39:11,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:39:11" (1/1) ... [2020-09-04 16:39:11,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:39:11,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:39:11,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:39:11,937 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:39:11,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:39:11,984 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:39:11,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:11 WrapperNode [2020-09-04 16:39:11,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:39:11,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:39:11,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:39:11,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:39:12,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:11" (1/1) ... [2020-09-04 16:39:12,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:11" (1/1) ... [2020-09-04 16:39:12,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:11" (1/1) ... [2020-09-04 16:39:12,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:11" (1/1) ... [2020-09-04 16:39:12,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:11" (1/1) ... [2020-09-04 16:39:12,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:11" (1/1) ... [2020-09-04 16:39:12,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:11" (1/1) ... [2020-09-04 16:39:12,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:39:12,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:39:12,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:39:12,130 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:39:12,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:11" (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 16:39:12,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:39:12,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:39:12,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-04 16:39:12,222 INFO L138 BoogieDeclarations]: Found implementation of procedure getrr [2020-09-04 16:39:12,222 INFO L138 BoogieDeclarations]: Found implementation of procedure getPtr [2020-09-04 16:39:12,222 INFO L138 BoogieDeclarations]: Found implementation of procedure freePtr [2020-09-04 16:39:12,222 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:39:12,222 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:39:12,223 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-04 16:39:12,223 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:39:12,223 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 16:39:12,223 INFO L130 BoogieDeclarations]: Found specification of procedure getrr [2020-09-04 16:39:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 16:39:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:39:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure getPtr [2020-09-04 16:39:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure freePtr [2020-09-04 16:39:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:39:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:39:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:39:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:39:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:39:12,531 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:39:12,531 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 16:39:12,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:39:12 BoogieIcfgContainer [2020-09-04 16:39:12,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:39:12,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:39:12,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:39:12,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:39:12,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:39:11" (1/3) ... [2020-09-04 16:39:12,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76193127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:39:12, skipping insertion in model container [2020-09-04 16:39:12,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:11" (2/3) ... [2020-09-04 16:39:12,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76193127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:39:12, skipping insertion in model container [2020-09-04 16:39:12,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:39:12" (3/3) ... [2020-09-04 16:39:12,574 INFO L109 eAbstractionObserver]: Analyzing ICFG 1_3.i [2020-09-04 16:39:12,592 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:39:12,610 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:39:12,632 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:39:12,662 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:39:12,662 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:39:12,662 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:39:12,662 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:39:12,662 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:39:12,663 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:39:12,663 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:39:12,663 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:39:12,683 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-04 16:39:12,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 16:39:12,699 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:39:12,700 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] [2020-09-04 16:39:12,701 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:39:12,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:39:12,709 INFO L82 PathProgramCache]: Analyzing trace with hash 538172514, now seen corresponding path program 1 times [2020-09-04 16:39:12,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:39:12,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131648338] [2020-09-04 16:39:12,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:39:12,807 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:39:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:13,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:39:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:13,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:39:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:13,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:39:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:13,308 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 16:39:13,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131648338] [2020-09-04 16:39:13,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:39:13,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 16:39:13,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805247713] [2020-09-04 16:39:13,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 16:39:13,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:39:13,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 16:39:13,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:39:13,351 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 11 states. [2020-09-04 16:39:13,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:39:13,813 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-09-04 16:39:13,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 16:39:13,816 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-09-04 16:39:13,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:39:13,842 INFO L225 Difference]: With dead ends: 64 [2020-09-04 16:39:13,843 INFO L226 Difference]: Without dead ends: 39 [2020-09-04 16:39:13,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2020-09-04 16:39:13,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-04 16:39:13,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-04 16:39:13,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-04 16:39:13,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 38 transitions. [2020-09-04 16:39:13,909 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 38 transitions. Word has length 30 [2020-09-04 16:39:13,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:39:13,910 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 38 transitions. [2020-09-04 16:39:13,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 16:39:13,910 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 38 transitions. [2020-09-04 16:39:13,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 16:39:13,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:39:13,912 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] [2020-09-04 16:39:13,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:39:13,913 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:39:13,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:39:13,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1533664090, now seen corresponding path program 1 times [2020-09-04 16:39:13,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:39:13,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255165643] [2020-09-04 16:39:13,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:39:13,917 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:39:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:39:13,939 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:39:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:39:13,960 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:39:13,994 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:39:13,994 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:39:13,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:39:14,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:39:14 BoogieIcfgContainer [2020-09-04 16:39:14,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:39:14,020 INFO L168 Benchmark]: Toolchain (without parser) took 2396.81 ms. Allocated memory was 144.2 MB in the beginning and 231.2 MB in the end (delta: 87.0 MB). Free memory was 100.5 MB in the beginning and 192.2 MB in the end (delta: -91.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:39:14,021 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 144.2 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 16:39:14,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.28 ms. Allocated memory is still 144.2 MB. Free memory was 100.3 MB in the beginning and 90.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-04 16:39:14,023 INFO L168 Benchmark]: Boogie Preprocessor took 142.52 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 90.4 MB in the beginning and 179.2 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:39:14,024 INFO L168 Benchmark]: RCFGBuilder took 409.48 ms. Allocated memory is still 201.3 MB. Free memory was 179.2 MB in the beginning and 163.7 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:39:14,025 INFO L168 Benchmark]: TraceAbstraction took 1468.24 ms. Allocated memory was 201.3 MB in the beginning and 231.2 MB in the end (delta: 29.9 MB). Free memory was 163.1 MB in the beginning and 192.2 MB in the end (delta: -29.1 MB). Peak memory consumption was 748.3 kB. Max. memory is 7.1 GB. [2020-09-04 16:39:14,029 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 144.2 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 361.28 ms. Allocated memory is still 144.2 MB. Free memory was 100.3 MB in the beginning and 90.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 142.52 ms. Allocated memory was 144.2 MB in the beginning and 201.3 MB in the end (delta: 57.1 MB). Free memory was 90.4 MB in the beginning and 179.2 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 409.48 ms. Allocated memory is still 201.3 MB. Free memory was 179.2 MB in the beginning and 163.7 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1468.24 ms. Allocated memory was 201.3 MB in the beginning and 231.2 MB in the end (delta: 29.9 MB). Free memory was 163.1 MB in the beginning and 192.2 MB in the end (delta: -29.1 MB). Peak memory consumption was 748.3 kB. 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; [L51] CALL, EXPR getPtr() [L37] CALL, EXPR getrr() [L30] rr * r = (rr *)malloc(sizeof *r); [L31] r -> state = 0 [L32] return r; [L37] RET, EXPR getrr() [L37] rr * r = getrr(); [L38] r -> state = 1 [L39] return r; [L51] RET, EXPR getPtr() [L51] ptr1 = getPtr() [L52] CALL freePtr(ptr1) [L44] EXPR ptr -> state [L44] (ptr -> state == 1) ? (0) : __blast_assert () [L45] ptr -> state = 2 [L52] RET freePtr(ptr1) [L54] CALL freePtr(ptr1) [L44] EXPR ptr -> state [L44] (ptr -> state == 1) ? (0) : __blast_assert () [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, 0.3s 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: No data available, 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...