/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/mannadiv.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:25:59,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:25:59,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:25:59,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:25:59,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:25:59,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:25:59,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:25:59,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:25:59,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:25:59,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:25:59,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:25:59,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:25:59,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:25:59,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:25:59,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:25:59,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:25:59,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:25:59,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:25:59,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:25:59,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:25:59,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:25:59,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:25:59,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:25:59,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:25:59,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:25:59,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:25:59,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:25:59,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:25:59,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:25:59,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 06:25:59,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:25:59,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:25:59,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:25:59,125 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 06:25:59,153 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:25:59,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:25:59,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:25:59,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:25:59,155 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:25:59,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:25:59,155 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:25:59,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:25:59,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:25:59,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:25:59,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:25:59,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:25:59,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:25:59,156 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:25:59,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:25:59,157 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:25:59,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:25:59,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:25:59,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:25:59,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:25:59,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:25:59,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:25:59,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:25:59,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:25:59,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:25:59,159 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:25:59,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:25:59,159 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:25:59,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:25:59,160 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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:25:59,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:25:59,511 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:25:59,516 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:25:59,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:25:59,519 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:25:59,520 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/mannadiv.c [2020-08-22 06:25:59,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ece6143f/0b382ec5745b479bad7d92c83f509a07/FLAG46a2f3304 [2020-08-22 06:26:00,040 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:26:00,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/mannadiv.c [2020-08-22 06:26:00,047 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ece6143f/0b382ec5745b479bad7d92c83f509a07/FLAG46a2f3304 [2020-08-22 06:26:00,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ece6143f/0b382ec5745b479bad7d92c83f509a07 [2020-08-22 06:26:00,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:26:00,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:26:00,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:26:00,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:26:00,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:26:00,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:26:00" (1/1) ... [2020-08-22 06:26:00,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6752e30a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:00, skipping insertion in model container [2020-08-22 06:26:00,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:26:00" (1/1) ... [2020-08-22 06:26:00,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:26:00,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:26:00,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:26:00,642 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:26:00,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:26:00,676 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:26:00,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:00 WrapperNode [2020-08-22 06:26:00,677 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:26:00,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:26:00,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:26:00,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:26:00,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:00" (1/1) ... [2020-08-22 06:26:00,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:00" (1/1) ... [2020-08-22 06:26:00,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:00" (1/1) ... [2020-08-22 06:26:00,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:00" (1/1) ... [2020-08-22 06:26:00,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:00" (1/1) ... [2020-08-22 06:26:00,799 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:00" (1/1) ... [2020-08-22 06:26:00,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:00" (1/1) ... [2020-08-22 06:26:00,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:26:00,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:26:00,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:26:00,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:26:00,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:00" (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 06:26:00,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:26:00,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:26:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 06:26:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 06:26:00,856 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:26:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:26:00,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:26:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 06:26:00,858 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 06:26:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 06:26:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:26:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:26:00,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:26:01,037 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:26:01,038 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 06:26:01,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:26:01 BoogieIcfgContainer [2020-08-22 06:26:01,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:26:01,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:26:01,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:26:01,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:26:01,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:26:00" (1/3) ... [2020-08-22 06:26:01,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cebb700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:26:01, skipping insertion in model container [2020-08-22 06:26:01,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:26:00" (2/3) ... [2020-08-22 06:26:01,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cebb700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:26:01, skipping insertion in model container [2020-08-22 06:26:01,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:26:01" (3/3) ... [2020-08-22 06:26:01,053 INFO L109 eAbstractionObserver]: Analyzing ICFG mannadiv.c [2020-08-22 06:26:01,063 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:26:01,074 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:26:01,089 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:26:01,120 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:26:01,120 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:26:01,120 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:26:01,120 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:26:01,120 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:26:01,120 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:26:01,121 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:26:01,122 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:26:01,143 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-08-22 06:26:01,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 06:26:01,149 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:01,150 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:26:01,151 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:01,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:01,156 INFO L82 PathProgramCache]: Analyzing trace with hash -849943384, now seen corresponding path program 1 times [2020-08-22 06:26:01,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:01,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996354088] [2020-08-22 06:26:01,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:01,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:26:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:01,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-22 06:26:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:01,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 06:26:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:26:01,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 06:26:01,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996354088] [2020-08-22 06:26:01,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:26:01,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-22 06:26:01,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508431434] [2020-08-22 06:26:01,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-22 06:26:01,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:26:01,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-22 06:26:01,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 06:26:01,310 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-08-22 06:26:01,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:26:01,330 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2020-08-22 06:26:01,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-22 06:26:01,331 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2020-08-22 06:26:01,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:26:01,339 INFO L225 Difference]: With dead ends: 50 [2020-08-22 06:26:01,339 INFO L226 Difference]: Without dead ends: 23 [2020-08-22 06:26:01,342 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 06:26:01,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-22 06:26:01,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-08-22 06:26:01,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-22 06:26:01,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-08-22 06:26:01,379 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 21 [2020-08-22 06:26:01,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:26:01,380 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-08-22 06:26:01,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-22 06:26:01,380 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-08-22 06:26:01,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 06:26:01,382 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:26:01,382 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:26:01,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:26:01,383 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:26:01,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:26:01,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1193991140, now seen corresponding path program 1 times [2020-08-22 06:26:01,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:26:01,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201763252] [2020-08-22 06:26:01,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:26:01,402 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 06:26:01,403 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 06:26:01,403 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:26:01,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:26:01,420 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 06:26:01,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:26:01 BoogieIcfgContainer [2020-08-22 06:26:01,421 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:26:01,423 INFO L168 Benchmark]: Toolchain (without parser) took 998.23 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 101.7 MB in the beginning and 144.8 MB in the end (delta: -43.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-08-22 06:26:01,424 INFO L168 Benchmark]: CDTParser took 0.72 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-22 06:26:01,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.47 ms. Allocated memory is still 145.8 MB. Free memory was 101.2 MB in the beginning and 91.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-22 06:26:01,427 INFO L168 Benchmark]: Boogie Preprocessor took 124.11 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 91.6 MB in the beginning and 180.7 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-08-22 06:26:01,428 INFO L168 Benchmark]: RCFGBuilder took 240.40 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 167.5 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-08-22 06:26:01,429 INFO L168 Benchmark]: TraceAbstraction took 377.45 ms. Allocated memory is still 202.4 MB. Free memory was 167.5 MB in the beginning and 144.8 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-22 06:26:01,433 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.72 ms. Allocated memory is still 145.8 MB. Free memory was 120.3 MB in the beginning and 119.9 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 251.47 ms. Allocated memory is still 145.8 MB. Free memory was 101.2 MB in the beginning and 91.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.11 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 91.6 MB in the beginning and 180.7 MB in the end (delta: -89.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 240.40 ms. Allocated memory is still 202.4 MB. Free memory was 180.7 MB in the beginning and 167.5 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 377.45 ms. Allocated memory is still 202.4 MB. Free memory was 167.5 MB in the beginning and 144.8 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 16]: 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: [L21] int x1, x2; [L22] int y1, y2, y3; [L23] x1 = __VERIFIER_nondet_int() [L24] x2 = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(x1 >= 0) [L11] COND FALSE !(!cond) [L26] RET assume_abort_if_not(x1 >= 0) [L27] CALL assume_abort_if_not(x2 != 0) [L11] COND FALSE !(!cond) [L27] RET assume_abort_if_not(x2 != 0) [L29] y1 = 0 [L30] y2 = 0 [L31] y3 = x1 [L33] COND TRUE 1 [L34] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) [L14] COND TRUE !(cond) [L16] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...