/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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/eqn4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:32:05,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:32:05,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:32:05,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:32:05,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:32:05,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:32:05,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:32:05,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:32:05,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:32:05,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:32:05,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:32:05,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:32:05,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:32:05,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:32:05,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:32:05,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:32:05,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:32:05,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:32:05,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:32:05,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:32:05,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:32:05,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:32:05,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:32:05,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:32:05,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:32:05,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:32:05,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:32:05,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:32:05,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:32:05,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 01:32:05,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:32:05,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:32:05,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:32:05,400 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 [2020-08-22 01:32:05,439 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:32:05,439 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:32:05,441 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:32:05,441 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:32:05,442 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:32:05,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:32:05,442 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:32:05,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:32:05,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:32:05,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:32:05,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:32:05,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:32:05,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:32:05,444 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:32:05,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:32:05,445 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:32:05,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:32:05,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:32:05,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:32:05,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:32:05,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:32:05,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:32:05,447 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:32:05,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:32:05,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:32:05,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:32:05,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:32:05,448 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:32:05,448 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:32:05,448 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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:32:05,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:32:05,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:32:05,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:32:05,749 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:32:05,749 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:32:05,750 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn4f.c [2020-08-22 01:32:05,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a36508d38/b51f40fe010b49b1ac1e92f98ccec819/FLAG0dc128088 [2020-08-22 01:32:06,289 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:32:06,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/eqn4f.c [2020-08-22 01:32:06,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a36508d38/b51f40fe010b49b1ac1e92f98ccec819/FLAG0dc128088 [2020-08-22 01:32:06,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a36508d38/b51f40fe010b49b1ac1e92f98ccec819 [2020-08-22 01:32:06,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:32:06,713 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:32:06,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:32:06,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:32:06,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:32:06,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:32:06" (1/1) ... [2020-08-22 01:32:06,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@700715c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:06, skipping insertion in model container [2020-08-22 01:32:06,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:32:06" (1/1) ... [2020-08-22 01:32:06,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:32:06,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:32:06,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:32:06,926 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:32:06,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:32:06,962 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:32:06,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:06 WrapperNode [2020-08-22 01:32:06,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:32:06,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:32:06,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:32:06,964 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:32:07,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:06" (1/1) ... [2020-08-22 01:32:07,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:06" (1/1) ... [2020-08-22 01:32:07,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:06" (1/1) ... [2020-08-22 01:32:07,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:06" (1/1) ... [2020-08-22 01:32:07,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:06" (1/1) ... [2020-08-22 01:32:07,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:06" (1/1) ... [2020-08-22 01:32:07,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:06" (1/1) ... [2020-08-22 01:32:07,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:32:07,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:32:07,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:32:07,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:32:07,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:06" (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 [2020-08-22 01:32:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:32:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:32:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 01:32:07,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 01:32:07,145 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:32:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:32:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 01:32:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 01:32:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 01:32:07,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:32:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:32:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:32:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:32:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:32:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:32:07,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:32:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:32:07,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:32:07,405 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:32:07,406 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 01:32:07,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:32:07 BoogieIcfgContainer [2020-08-22 01:32:07,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:32:07,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:32:07,427 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:32:07,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:32:07,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:32:06" (1/3) ... [2020-08-22 01:32:07,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402e2609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:32:07, skipping insertion in model container [2020-08-22 01:32:07,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:06" (2/3) ... [2020-08-22 01:32:07,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402e2609 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:32:07, skipping insertion in model container [2020-08-22 01:32:07,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:32:07" (3/3) ... [2020-08-22 01:32:07,445 INFO L109 eAbstractionObserver]: Analyzing ICFG eqn4f.c [2020-08-22 01:32:07,460 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:32:07,468 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:32:07,498 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:32:07,522 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:32:07,523 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:32:07,523 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:32:07,523 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:32:07,523 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:32:07,523 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:32:07,523 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:32:07,523 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:32:07,541 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-08-22 01:32:07,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 01:32:07,547 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:32:07,548 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] [2020-08-22 01:32:07,548 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:32:07,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:32:07,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-08-22 01:32:07,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:32:07,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013240282] [2020-08-22 01:32:07,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:32:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:32:07,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:32:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:32:07,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 01:32:07,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:32:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:32:07,754 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013240282] [2020-08-22 01:32:07,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:32:07,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 01:32:07,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713818718] [2020-08-22 01:32:07,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 01:32:07,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:32:07,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 01:32:07,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:32:07,781 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-08-22 01:32:07,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:32:07,924 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-08-22 01:32:07,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 01:32:07,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-22 01:32:07,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:32:07,941 INFO L225 Difference]: With dead ends: 58 [2020-08-22 01:32:07,942 INFO L226 Difference]: Without dead ends: 29 [2020-08-22 01:32:07,947 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 [2020-08-22 01:32:07,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-22 01:32:07,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-22 01:32:07,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-22 01:32:08,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-08-22 01:32:08,002 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-08-22 01:32:08,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:32:08,003 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-08-22 01:32:08,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 01:32:08,003 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-08-22 01:32:08,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 01:32:08,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:32:08,005 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] [2020-08-22 01:32:08,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:32:08,007 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:32:08,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:32:08,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-08-22 01:32:08,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:32:08,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565317407] [2020-08-22 01:32:08,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:32:08,060 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 01:32:08,061 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 01:32:08,061 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 01:32:08,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:32:08,082 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 01:32:08,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 01:32:08 BoogieIcfgContainer [2020-08-22 01:32:08,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 01:32:08,085 INFO L168 Benchmark]: Toolchain (without parser) took 1371.14 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 102.7 MB in the beginning and 133.3 MB in the end (delta: -30.7 MB). Peak memory consumption was 32.3 MB. Max. memory is 7.1 GB. [2020-08-22 01:32:08,086 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 01:32:08,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.62 ms. Allocated memory is still 141.6 MB. Free memory was 102.4 MB in the beginning and 92.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-22 01:32:08,088 INFO L168 Benchmark]: Boogie Preprocessor took 113.69 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 92.1 MB in the beginning and 181.8 MB in the end (delta: -89.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-22 01:32:08,089 INFO L168 Benchmark]: RCFGBuilder took 333.20 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 164.8 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-08-22 01:32:08,090 INFO L168 Benchmark]: TraceAbstraction took 655.82 ms. Allocated memory is still 204.5 MB. Free memory was 164.8 MB in the beginning and 133.3 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 7.1 GB. [2020-08-22 01:32:08,095 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 247.62 ms. Allocated memory is still 141.6 MB. Free memory was 102.4 MB in the beginning and 92.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.69 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 92.1 MB in the beginning and 181.8 MB in the end (delta: -89.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 333.20 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 164.8 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 655.82 ms. Allocated memory is still 204.5 MB. Free memory was 164.8 MB in the beginning and 133.3 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 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); [L29] a[0] = 8 [L30] b[0] = 0 [L31] i=1 [L31] COND FALSE !(i