/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ifncompf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:03:46,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:03:46,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:03:46,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:03:46,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:03:46,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:03:46,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:03:46,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:03:46,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:03:46,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:03:46,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:03:46,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:03:46,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:03:46,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:03:46,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:03:46,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:03:46,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:03:46,975 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:03:46,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:03:46,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:03:46,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:03:46,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:03:46,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:03:46,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:03:46,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:03:46,985 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:03:46,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:03:46,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:03:46,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:03:46,987 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 19:03:46,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:03:46,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:03:46,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:03:46,995 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 [2020-08-21 19:03:47,016 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:03:47,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:03:47,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:03:47,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:03:47,018 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:03:47,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:03:47,019 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:03:47,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:03:47,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:03:47,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:03:47,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:03:47,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:03:47,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:03:47,020 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:03:47,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:03:47,021 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:03:47,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:03:47,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:03:47,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:03:47,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:03:47,022 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:03:47,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:03:47,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:03:47,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:03:47,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:03:47,023 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:03:47,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:03:47,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:03:47,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:03:47,023 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=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=HIGHLEXORDER;log-additional-information=true; [2020-08-21 19:03:47,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:03:47,338 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:03:47,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:03:47,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:03:47,344 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:03:47,344 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifncompf.c [2020-08-21 19:03:47,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7dda24ff/ecbb4b26ed71436ca881a9dc0a15a6ae/FLAG2d920ab3b [2020-08-21 19:03:47,891 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:03:47,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ifncompf.c [2020-08-21 19:03:47,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7dda24ff/ecbb4b26ed71436ca881a9dc0a15a6ae/FLAG2d920ab3b [2020-08-21 19:03:48,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7dda24ff/ecbb4b26ed71436ca881a9dc0a15a6ae [2020-08-21 19:03:48,283 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:03:48,284 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:03:48,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:03:48,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:03:48,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:03:48,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:03:48" (1/1) ... [2020-08-21 19:03:48,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@605628e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:48, skipping insertion in model container [2020-08-21 19:03:48,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:03:48" (1/1) ... [2020-08-21 19:03:48,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:03:48,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:03:48,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:03:48,515 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:03:48,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:03:48,555 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:03:48,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:48 WrapperNode [2020-08-21 19:03:48,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:03:48,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:03:48,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:03:48,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:03:48,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:48" (1/1) ... [2020-08-21 19:03:48,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:48" (1/1) ... [2020-08-21 19:03:48,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:48" (1/1) ... [2020-08-21 19:03:48,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:48" (1/1) ... [2020-08-21 19:03:48,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:48" (1/1) ... [2020-08-21 19:03:48,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:48" (1/1) ... [2020-08-21 19:03:48,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:48" (1/1) ... [2020-08-21 19:03:48,696 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:03:48,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:03:48,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:03:48,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:03:48,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:48" (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 [2020-08-21 19:03:48,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:03:48,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:03:48,752 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 19:03:48,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 19:03:48,753 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:03:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:03:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 19:03:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 19:03:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 19:03:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:03:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 19:03:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:03:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 19:03:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:03:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:03:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:03:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:03:48,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:03:49,054 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:03:49,055 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-21 19:03:49,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:03:49 BoogieIcfgContainer [2020-08-21 19:03:49,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:03:49,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:03:49,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:03:49,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:03:49,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:03:48" (1/3) ... [2020-08-21 19:03:49,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c987cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:03:49, skipping insertion in model container [2020-08-21 19:03:49,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:03:48" (2/3) ... [2020-08-21 19:03:49,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c987cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:03:49, skipping insertion in model container [2020-08-21 19:03:49,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:03:49" (3/3) ... [2020-08-21 19:03:49,069 INFO L109 eAbstractionObserver]: Analyzing ICFG ifncompf.c [2020-08-21 19:03:49,084 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:03:49,094 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:03:49,111 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:03:49,137 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:03:49,137 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:03:49,138 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:03:49,138 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:03:49,138 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:03:49,138 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:03:49,138 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:03:49,139 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:03:49,160 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-08-21 19:03:49,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 19:03:49,168 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:03:49,177 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] [2020-08-21 19:03:49,178 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:03:49,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:03:49,184 INFO L82 PathProgramCache]: Analyzing trace with hash -794599326, now seen corresponding path program 1 times [2020-08-21 19:03:49,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:03:49,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146654457] [2020-08-21 19:03:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:03:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:49,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:03:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:49,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 19:03:49,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:03:49,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:03:49,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146654457] [2020-08-21 19:03:49,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:03:49,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 19:03:49,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082822765] [2020-08-21 19:03:49,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 19:03:49,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:03:49,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 19:03:49,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:03:49,427 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-08-21 19:03:49,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:03:49,575 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2020-08-21 19:03:49,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 19:03:49,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-21 19:03:49,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:03:49,586 INFO L225 Difference]: With dead ends: 70 [2020-08-21 19:03:49,587 INFO L226 Difference]: Without dead ends: 35 [2020-08-21 19:03:49,591 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 [2020-08-21 19:03:49,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-21 19:03:49,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-21 19:03:49,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-21 19:03:49,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-08-21 19:03:49,639 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 24 [2020-08-21 19:03:49,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:03:49,640 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-08-21 19:03:49,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 19:03:49,641 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-08-21 19:03:49,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 19:03:49,642 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:03:49,643 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] [2020-08-21 19:03:49,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:03:49,643 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:03:49,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:03:49,644 INFO L82 PathProgramCache]: Analyzing trace with hash -544938994, now seen corresponding path program 1 times [2020-08-21 19:03:49,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:03:49,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211513975] [2020-08-21 19:03:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:03:49,674 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-21 19:03:49,675 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-21 19:03:49,675 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 19:03:49,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:03:49,697 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-21 19:03:49,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:03:49 BoogieIcfgContainer [2020-08-21 19:03:49,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:03:49,701 INFO L168 Benchmark]: Toolchain (without parser) took 1415.60 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 102.0 MB in the beginning and 126.7 MB in the end (delta: -24.8 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:49,702 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 19:03:49,703 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.24 ms. Allocated memory is still 146.3 MB. Free memory was 101.8 MB in the beginning and 91.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:49,705 INFO L168 Benchmark]: Boogie Preprocessor took 136.94 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 91.1 MB in the beginning and 179.7 MB in the end (delta: -88.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:49,706 INFO L168 Benchmark]: RCFGBuilder took 362.74 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 160.8 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:49,707 INFO L168 Benchmark]: TraceAbstraction took 638.06 ms. Allocated memory is still 202.4 MB. Free memory was 160.1 MB in the beginning and 126.7 MB in the end (delta: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 7.1 GB. [2020-08-21 19:03:49,711 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 146.3 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 271.24 ms. Allocated memory is still 146.3 MB. Free memory was 101.8 MB in the beginning and 91.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.94 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 91.1 MB in the beginning and 179.7 MB in the end (delta: -88.6 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 362.74 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 160.8 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 638.06 ms. Allocated memory is still 202.4 MB. Free memory was 160.1 MB in the beginning and 126.7 MB in the end (delta: 33.4 MB). Peak memory consumption was 33.4 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 *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L28] long long *c = malloc(sizeof(long long)*N); [L30] i=0 [L30] COND FALSE !(i