/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.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s4iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:04:41,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:04:41,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:04:42,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:04:42,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:04:42,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:04:42,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:04:42,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:04:42,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:04:42,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:04:42,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:04:42,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:04:42,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:04:42,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:04:42,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:04:42,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:04:42,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:04:42,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:04:42,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:04:42,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:04:42,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:04:42,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:04:42,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:04:42,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:04:42,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 02:04:42,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:04:42,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:04:42,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:04:42,066 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 02:04:42,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:04:42,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:04:42,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:04:42,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:04:42,090 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:04:42,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:04:42,090 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:04:42,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:04:42,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:04:42,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:04:42,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:04:42,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:04:42,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:04:42,092 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:04:42,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:04:42,092 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:04:42,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:04:42,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:04:42,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:04:42,093 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:04:42,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:04:42,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:04:42,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:04:42,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:04:42,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:04:42,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:04:42,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:04:42,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:04:42,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:04:42,095 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES 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: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 02:04:42,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:04:42,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:04:42,415 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:04:42,417 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:04:42,417 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:04:42,418 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s4iff.c [2020-08-19 02:04:42,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/008e61c88/3a57f7b74dbc4822a68aec17793ecf05/FLAG9cd1e5a35 [2020-08-19 02:04:42,992 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:04:42,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s4iff.c [2020-08-19 02:04:43,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/008e61c88/3a57f7b74dbc4822a68aec17793ecf05/FLAG9cd1e5a35 [2020-08-19 02:04:43,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/008e61c88/3a57f7b74dbc4822a68aec17793ecf05 [2020-08-19 02:04:43,357 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:04:43,359 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:04:43,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:04:43,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:04:43,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:04:43,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:04:43" (1/1) ... [2020-08-19 02:04:43,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@611b9532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:43, skipping insertion in model container [2020-08-19 02:04:43,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:04:43" (1/1) ... [2020-08-19 02:04:43,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:04:43,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:04:43,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:04:43,622 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:04:43,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:04:43,657 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:04:43,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:43 WrapperNode [2020-08-19 02:04:43,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:04:43,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:04:43,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:04:43,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:04:43,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:43" (1/1) ... [2020-08-19 02:04:43,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:43" (1/1) ... [2020-08-19 02:04:43,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:43" (1/1) ... [2020-08-19 02:04:43,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:43" (1/1) ... [2020-08-19 02:04:43,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:43" (1/1) ... [2020-08-19 02:04:43,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:43" (1/1) ... [2020-08-19 02:04:43,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:43" (1/1) ... [2020-08-19 02:04:43,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:04:43,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:04:43,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:04:43,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:04:43,783 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:43" (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 [2020-08-19 02:04:43,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:04:43,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:04:43,841 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 02:04:43,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 02:04:43,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:04:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:04:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 02:04:43,841 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 02:04:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 02:04:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:04:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:04:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:04:43,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:04:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:04:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:04:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:04:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:04:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:04:43,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:04:44,134 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:04:44,134 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-19 02:04:44,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:04:44 BoogieIcfgContainer [2020-08-19 02:04:44,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:04:44,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:04:44,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:04:44,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:04:44,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:04:43" (1/3) ... [2020-08-19 02:04:44,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb5f851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:04:44, skipping insertion in model container [2020-08-19 02:04:44,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:04:43" (2/3) ... [2020-08-19 02:04:44,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb5f851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:04:44, skipping insertion in model container [2020-08-19 02:04:44,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:04:44" (3/3) ... [2020-08-19 02:04:44,149 INFO L109 eAbstractionObserver]: Analyzing ICFG s4iff.c [2020-08-19 02:04:44,160 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:04:44,168 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:04:44,183 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:04:44,210 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:04:44,210 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:04:44,211 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:04:44,211 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:04:44,211 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:04:44,211 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:04:44,211 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:04:44,211 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:04:44,233 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-19 02:04:44,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 02:04:44,242 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:04:44,243 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] [2020-08-19 02:04:44,243 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:04:44,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:04:44,250 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-08-19 02:04:44,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:04:44,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121602882] [2020-08-19 02:04:44,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:04:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:44,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:04:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:44,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:04:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:04:44,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121602882] [2020-08-19 02:04:44,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:04:44,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:04:44,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018738299] [2020-08-19 02:04:44,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:04:44,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:04:44,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:04:44,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:04:44,507 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-19 02:04:44,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:04:44,616 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2020-08-19 02:04:44,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:04:44,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 02:04:44,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:04:44,628 INFO L225 Difference]: With dead ends: 54 [2020-08-19 02:04:44,628 INFO L226 Difference]: Without dead ends: 25 [2020-08-19 02:04:44,632 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 [2020-08-19 02:04:44,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-19 02:04:44,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-19 02:04:44,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-19 02:04:44,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-08-19 02:04:44,675 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2020-08-19 02:04:44,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:04:44,676 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-08-19 02:04:44,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:04:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-08-19 02:04:44,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 02:04:44,677 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:04:44,677 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] [2020-08-19 02:04:44,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:04:44,678 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:04:44,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:04:44,679 INFO L82 PathProgramCache]: Analyzing trace with hash -173966049, now seen corresponding path program 1 times [2020-08-19 02:04:44,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:04:44,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17227715] [2020-08-19 02:04:44,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:04:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:44,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:04:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:44,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:04:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:44,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:04:44,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17227715] [2020-08-19 02:04:44,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:04:44,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:04:44,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586167432] [2020-08-19 02:04:44,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:04:44,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:04:44,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:04:44,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:04:44,832 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-08-19 02:04:44,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:04:44,948 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-08-19 02:04:44,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 02:04:44,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-19 02:04:44,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:04:44,950 INFO L225 Difference]: With dead ends: 40 [2020-08-19 02:04:44,950 INFO L226 Difference]: Without dead ends: 30 [2020-08-19 02:04:44,951 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 [2020-08-19 02:04:44,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-19 02:04:44,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-08-19 02:04:44,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-19 02:04:44,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-08-19 02:04:44,959 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 21 [2020-08-19 02:04:44,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:04:44,959 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-08-19 02:04:44,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:04:44,960 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-08-19 02:04:44,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-19 02:04:44,960 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:04:44,961 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] [2020-08-19 02:04:44,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:04:44,961 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:04:44,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:04:44,962 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-08-19 02:04:44,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:04:44,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769897998] [2020-08-19 02:04:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:04:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:45,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:04:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:45,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:04:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:04:45,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:04:45,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769897998] [2020-08-19 02:04:45,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:04:45,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 02:04:45,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899697016] [2020-08-19 02:04:45,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:04:45,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:04:45,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:04:45,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:04:45,327 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 12 states. [2020-08-19 02:04:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:04:45,812 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-08-19 02:04:45,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 02:04:45,813 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-08-19 02:04:45,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:04:45,816 INFO L225 Difference]: With dead ends: 42 [2020-08-19 02:04:45,816 INFO L226 Difference]: Without dead ends: 36 [2020-08-19 02:04:45,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-08-19 02:04:45,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-19 02:04:45,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-08-19 02:04:45,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-19 02:04:45,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-19 02:04:45,826 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 26 [2020-08-19 02:04:45,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:04:45,827 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-19 02:04:45,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:04:45,827 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-19 02:04:45,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-19 02:04:45,828 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:04:45,828 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] [2020-08-19 02:04:45,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:04:45,829 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:04:45,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:04:45,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1255066423, now seen corresponding path program 1 times [2020-08-19 02:04:45,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:04:45,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123443488] [2020-08-19 02:04:45,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:04:45,844 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-19 02:04:45,844 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-19 02:04:45,845 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:04:45,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:04:45,867 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-19 02:04:45,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:04:45 BoogieIcfgContainer [2020-08-19 02:04:45,867 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:04:45,872 INFO L168 Benchmark]: Toolchain (without parser) took 2512.11 ms. Allocated memory was 139.5 MB in the beginning and 235.4 MB in the end (delta: 95.9 MB). Free memory was 102.3 MB in the beginning and 143.9 MB in the end (delta: -41.6 MB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. [2020-08-19 02:04:45,875 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-19 02:04:45,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.93 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 91.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-19 02:04:45,877 INFO L168 Benchmark]: Boogie Preprocessor took 121.78 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 179.6 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-19 02:04:45,879 INFO L168 Benchmark]: RCFGBuilder took 357.12 ms. Allocated memory is still 202.4 MB. Free memory was 179.6 MB in the beginning and 162.3 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-08-19 02:04:45,880 INFO L168 Benchmark]: TraceAbstraction took 1726.80 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 162.3 MB in the beginning and 143.9 MB in the end (delta: 18.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. [2020-08-19 02:04:45,888 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 299.93 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 91.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.78 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 179.6 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 357.12 ms. Allocated memory is still 202.4 MB. Free memory was 179.6 MB in the beginning and 162.3 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1726.80 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 162.3 MB in the beginning and 143.9 MB in the end (delta: 18.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i