/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=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ifcompf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:27:01,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:27:01,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:27:01,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:27:01,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:27:01,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:27:01,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:27:01,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:27:01,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:27:01,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:27:01,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:27:01,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:27:01,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:27:01,073 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:27:01,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:27:01,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:27:01,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:27:01,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:27:01,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:27:01,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:27:01,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:27:01,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:27:01,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:27:01,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:27:01,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 00:27:01,097 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:27:01,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:27:01,099 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:27:01,100 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 00:27:01,121 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:27:01,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:27:01,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:27:01,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:27:01,123 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:27:01,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:27:01,123 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:27:01,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:27:01,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:27:01,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:27:01,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:27:01,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:27:01,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:27:01,124 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:27:01,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:27:01,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:27:01,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:27:01,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:27:01,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:27:01,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:27:01,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:27:01,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:27:01,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:27:01,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:27:01,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:27:01,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:27:01,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:27:01,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:27:01,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:27:01,128 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=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:27:01,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:27:01,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:27:01,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:27:01,461 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:27:01,461 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:27:01,462 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifcompf.c [2020-08-19 00:27:01,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41927c5fb/4ef181eece0b4d68bfa64e117941bf3a/FLAG113320420 [2020-08-19 00:27:02,014 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:27:02,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ifcompf.c [2020-08-19 00:27:02,023 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41927c5fb/4ef181eece0b4d68bfa64e117941bf3a/FLAG113320420 [2020-08-19 00:27:02,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41927c5fb/4ef181eece0b4d68bfa64e117941bf3a [2020-08-19 00:27:02,370 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:27:02,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:27:02,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:27:02,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:27:02,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:27:02,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:27:02" (1/1) ... [2020-08-19 00:27:02,381 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e807449 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:02, skipping insertion in model container [2020-08-19 00:27:02,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:27:02" (1/1) ... [2020-08-19 00:27:02,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:27:02,408 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:27:02,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:27:02,635 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:27:02,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:27:02,674 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:27:02,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:02 WrapperNode [2020-08-19 00:27:02,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:27:02,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:27:02,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:27:02,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:27:02,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:02" (1/1) ... [2020-08-19 00:27:02,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:02" (1/1) ... [2020-08-19 00:27:02,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:02" (1/1) ... [2020-08-19 00:27:02,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:02" (1/1) ... [2020-08-19 00:27:02,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:02" (1/1) ... [2020-08-19 00:27:02,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:02" (1/1) ... [2020-08-19 00:27:02,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:02" (1/1) ... [2020-08-19 00:27:02,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:27:02,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:27:02,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:27:02,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:27:02,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:02" (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 00:27:02,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:27:02,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:27:02,866 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 00:27:02,866 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 00:27:02,867 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:27:02,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:27:02,867 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 00:27:02,867 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 00:27:02,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 00:27:02,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:27:02,868 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:27:02,868 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:27:02,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:27:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:27:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:27:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:27:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:27:02,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:27:03,156 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:27:03,157 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 00:27:03,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:27:03 BoogieIcfgContainer [2020-08-19 00:27:03,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:27:03,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:27:03,164 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:27:03,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:27:03,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:27:02" (1/3) ... [2020-08-19 00:27:03,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ff5dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:27:03, skipping insertion in model container [2020-08-19 00:27:03,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:27:02" (2/3) ... [2020-08-19 00:27:03,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ff5dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:27:03, skipping insertion in model container [2020-08-19 00:27:03,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:27:03" (3/3) ... [2020-08-19 00:27:03,170 INFO L109 eAbstractionObserver]: Analyzing ICFG ifcompf.c [2020-08-19 00:27:03,182 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:27:03,190 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:27:03,206 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:27:03,232 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:27:03,232 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:27:03,233 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:27:03,233 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:27:03,233 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:27:03,233 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:27:03,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:27:03,233 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:27:03,254 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-08-19 00:27:03,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 00:27:03,261 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:27:03,262 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] [2020-08-19 00:27:03,263 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:27:03,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:27:03,273 INFO L82 PathProgramCache]: Analyzing trace with hash -794599326, now seen corresponding path program 1 times [2020-08-19 00:27:03,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:27:03,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13855973] [2020-08-19 00:27:03,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:27:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:03,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:27:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:03,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:27:03,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:27:03,498 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 00:27:03,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13855973] [2020-08-19 00:27:03,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:27:03,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:27:03,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746403929] [2020-08-19 00:27:03,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:27:03,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:27:03,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:27:03,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:27:03,525 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-08-19 00:27:03,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:27:03,693 INFO L93 Difference]: Finished difference Result 70 states and 95 transitions. [2020-08-19 00:27:03,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:27:03,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-19 00:27:03,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:27:03,713 INFO L225 Difference]: With dead ends: 70 [2020-08-19 00:27:03,714 INFO L226 Difference]: Without dead ends: 35 [2020-08-19 00:27:03,719 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 00:27:03,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-19 00:27:03,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-19 00:27:03,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-19 00:27:03,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-08-19 00:27:03,781 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 24 [2020-08-19 00:27:03,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:27:03,783 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-08-19 00:27:03,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:27:03,784 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-08-19 00:27:03,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 00:27:03,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:27:03,788 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] [2020-08-19 00:27:03,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:27:03,789 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:27:03,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:27:03,790 INFO L82 PathProgramCache]: Analyzing trace with hash -544938994, now seen corresponding path program 1 times [2020-08-19 00:27:03,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:27:03,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937578194] [2020-08-19 00:27:03,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:27:03,820 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-19 00:27:03,821 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-19 00:27:03,821 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 00:27:03,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:27:03,844 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-19 00:27:03,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:27:03 BoogieIcfgContainer [2020-08-19 00:27:03,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:27:03,848 INFO L168 Benchmark]: Toolchain (without parser) took 1474.95 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 104.2 MB in the beginning and 127.9 MB in the end (delta: -23.8 MB). Peak memory consumption was 38.6 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:03,849 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 00:27:03,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.87 ms. Allocated memory is still 141.0 MB. Free memory was 104.0 MB in the beginning and 93.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:03,851 INFO L168 Benchmark]: Boogie Preprocessor took 130.85 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 93.2 MB in the beginning and 181.2 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:03,852 INFO L168 Benchmark]: RCFGBuilder took 355.79 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 161.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:03,853 INFO L168 Benchmark]: TraceAbstraction took 681.06 ms. Allocated memory is still 203.4 MB. Free memory was 161.2 MB in the beginning and 127.9 MB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. [2020-08-19 00:27:03,858 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 301.87 ms. Allocated memory is still 141.0 MB. Free memory was 104.0 MB in the beginning and 93.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.85 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 93.2 MB in the beginning and 181.2 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 355.79 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 161.8 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 681.06 ms. Allocated memory is still 203.4 MB. Free memory was 161.2 MB in the beginning and 127.9 MB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 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