/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/array-fpi/s22iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:32:17,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:32:17,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:32:17,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:32:17,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:32:17,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:32:17,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:32:17,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:32:17,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:32:17,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:32:17,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:32:17,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:32:17,639 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:32:17,640 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:32:17,641 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:32:17,642 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:32:17,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:32:17,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:32:17,645 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:32:17,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:32:17,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:32:17,649 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:32:17,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:32:17,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:32:17,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:32:17,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:32:17,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:32:17,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:32:17,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 11:32:17,677 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:32:17,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:32:17,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:32:17,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:32:17,679 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:32:17,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:32:17,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:32:17,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:32:17,680 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:32:17,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:32:17,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:32:17,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:32:17,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:32:17,680 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:32:17,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:32:17,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:32:17,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:32:17,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:32:17,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:32:17,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:32:17,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:32:17,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:32:17,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:32:17,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:32:17,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:32:17,683 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:32:17,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:32:17,683 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:32:17,683 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:32:17,684 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:32:17,971 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:32:17,986 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:32:17,989 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:32:17,990 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:32:17,991 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:32:17,991 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s22iff.c [2020-07-07 11:32:18,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c863d1044/93bea4f10cf247edbbdf17a5c5e5f4b6/FLAG1be35976e [2020-07-07 11:32:18,568 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:32:18,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s22iff.c [2020-07-07 11:32:18,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c863d1044/93bea4f10cf247edbbdf17a5c5e5f4b6/FLAG1be35976e [2020-07-07 11:32:18,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c863d1044/93bea4f10cf247edbbdf17a5c5e5f4b6 [2020-07-07 11:32:18,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:32:18,890 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:32:18,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:32:18,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:32:18,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:32:18,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:32:18" (1/1) ... [2020-07-07 11:32:18,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f43076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:18, skipping insertion in model container [2020-07-07 11:32:18,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:32:18" (1/1) ... [2020-07-07 11:32:18,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:32:18,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:32:19,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:32:19,126 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:32:19,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:32:19,167 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:32:19,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:19 WrapperNode [2020-07-07 11:32:19,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:32:19,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:32:19,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:32:19,169 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:32:19,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:19" (1/1) ... [2020-07-07 11:32:19,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:19" (1/1) ... [2020-07-07 11:32:19,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:19" (1/1) ... [2020-07-07 11:32:19,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:19" (1/1) ... [2020-07-07 11:32:19,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:19" (1/1) ... [2020-07-07 11:32:19,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:19" (1/1) ... [2020-07-07 11:32:19,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:19" (1/1) ... [2020-07-07 11:32:19,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:32:19,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:32:19,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:32:19,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:32:19,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:19" (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 [2020-07-07 11:32:19,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:32:19,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:32:19,373 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:32:19,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:32:19,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:32:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:32:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:32:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:32:19,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:32:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:32:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 11:32:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:32:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 11:32:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 11:32:19,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 11:32:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 11:32:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:32:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:32:19,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:32:19,733 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:32:19,733 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-07 11:32:19,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:32:19 BoogieIcfgContainer [2020-07-07 11:32:19,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:32:19,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:32:19,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:32:19,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:32:19,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:32:18" (1/3) ... [2020-07-07 11:32:19,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b164963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:32:19, skipping insertion in model container [2020-07-07 11:32:19,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:32:19" (2/3) ... [2020-07-07 11:32:19,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b164963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:32:19, skipping insertion in model container [2020-07-07 11:32:19,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:32:19" (3/3) ... [2020-07-07 11:32:19,747 INFO L109 eAbstractionObserver]: Analyzing ICFG s22iff.c [2020-07-07 11:32:19,758 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:32:19,766 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:32:19,780 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:32:19,803 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:32:19,803 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:32:19,803 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:32:19,803 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:32:19,804 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:32:19,804 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:32:19,804 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:32:19,804 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:32:19,824 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-07-07 11:32:19,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-07 11:32:19,829 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:19,830 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] [2020-07-07 11:32:19,831 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:19,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:19,836 INFO L82 PathProgramCache]: Analyzing trace with hash 2033030480, now seen corresponding path program 1 times [2020-07-07 11:32:19,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:19,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270927908] [2020-07-07 11:32:19,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:20,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270927908] [2020-07-07 11:32:20,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:32:20,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:32:20,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987535835] [2020-07-07 11:32:20,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:32:20,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:20,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:32:20,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:32:20,070 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-07-07 11:32:20,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:20,206 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-07-07 11:32:20,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:32:20,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-07 11:32:20,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:20,219 INFO L225 Difference]: With dead ends: 62 [2020-07-07 11:32:20,219 INFO L226 Difference]: Without dead ends: 29 [2020-07-07 11:32:20,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:32:20,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-07 11:32:20,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-07-07 11:32:20,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-07 11:32:20,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-07-07 11:32:20,272 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 23 [2020-07-07 11:32:20,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:20,273 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-07-07 11:32:20,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:32:20,273 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-07-07 11:32:20,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-07 11:32:20,274 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:20,275 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] [2020-07-07 11:32:20,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:32:20,276 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:20,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:20,276 INFO L82 PathProgramCache]: Analyzing trace with hash 706992569, now seen corresponding path program 1 times [2020-07-07 11:32:20,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:20,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957529895] [2020-07-07 11:32:20,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:20,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:32:20,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:32:20,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957529895] [2020-07-07 11:32:20,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:32:20,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:32:20,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141129611] [2020-07-07 11:32:20,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:32:20,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:32:20,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:32:20,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:32:20,412 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-07-07 11:32:20,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:32:20,626 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-07-07 11:32:20,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:32:20,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-07-07 11:32:20,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:32:20,629 INFO L225 Difference]: With dead ends: 51 [2020-07-07 11:32:20,629 INFO L226 Difference]: Without dead ends: 37 [2020-07-07 11:32:20,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:32:20,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-07 11:32:20,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-07-07 11:32:20,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-07 11:32:20,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-07-07 11:32:20,645 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-07-07 11:32:20,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:32:20,645 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-07-07 11:32:20,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:32:20,645 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-07-07 11:32:20,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-07 11:32:20,646 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:32:20,647 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, 1] [2020-07-07 11:32:20,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:32:20,647 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:32:20,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:32:20,648 INFO L82 PathProgramCache]: Analyzing trace with hash 284203188, now seen corresponding path program 1 times [2020-07-07 11:32:20,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:32:20,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718157019] [2020-07-07 11:32:20,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:32:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:32:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:32:20,777 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 11:32:20,777 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 11:32:20,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:32:20,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:32:20 BoogieIcfgContainer [2020-07-07 11:32:20,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:32:20,823 INFO L168 Benchmark]: Toolchain (without parser) took 1932.66 ms. Allocated memory was 136.3 MB in the beginning and 217.6 MB in the end (delta: 81.3 MB). Free memory was 101.0 MB in the beginning and 124.3 MB in the end (delta: -23.3 MB). Peak memory consumption was 57.9 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:20,824 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 11:32:20,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.71 ms. Allocated memory is still 136.3 MB. Free memory was 100.8 MB in the beginning and 90.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:20,827 INFO L168 Benchmark]: Boogie Preprocessor took 62.17 ms. Allocated memory was 136.3 MB in the beginning and 170.4 MB in the end (delta: 34.1 MB). Free memory was 90.0 MB in the beginning and 147.0 MB in the end (delta: -57.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:20,828 INFO L168 Benchmark]: RCFGBuilder took 506.61 ms. Allocated memory was 170.4 MB in the beginning and 217.6 MB in the end (delta: 47.2 MB). Free memory was 147.0 MB in the beginning and 185.2 MB in the end (delta: -38.2 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:20,829 INFO L168 Benchmark]: TraceAbstraction took 1081.22 ms. Allocated memory is still 217.6 MB. Free memory was 184.3 MB in the beginning and 124.3 MB in the end (delta: 60.1 MB). Peak memory consumption was 60.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:32:20,833 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 277.71 ms. Allocated memory is still 136.3 MB. Free memory was 100.8 MB in the beginning and 90.0 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.17 ms. Allocated memory was 136.3 MB in the beginning and 170.4 MB in the end (delta: 34.1 MB). Free memory was 90.0 MB in the beginning and 147.0 MB in the end (delta: -57.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 506.61 ms. Allocated memory was 170.4 MB in the beginning and 217.6 MB in the end (delta: 47.2 MB). Free memory was 147.0 MB in the beginning and 185.2 MB in the end (delta: -38.2 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1081.22 ms. Allocated memory is still 217.6 MB. Free memory was 184.3 MB in the beginning and 124.3 MB in the end (delta: 60.1 MB). Peak memory consumption was 60.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; VAL [\old(N)=10, N=0] [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}] [L30] COND TRUE i