/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:32:18,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:32:18,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:32:18,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:32:18,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:32:18,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:32:18,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:32:18,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:32:18,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:32:18,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:32:18,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:32:18,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:32:18,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:32:18,735 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:32:18,736 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:32:18,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:32:18,738 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:32:18,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:32:18,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:32:18,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:32:18,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:32:18,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:32:18,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:32:18,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:32:18,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:32:18,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:32:18,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:32:18,752 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:32:18,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:32:18,754 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:32:18,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:32:18,755 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:32:18,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:32:18,756 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:32:18,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:32:18,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:32:18,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:32:18,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:32:18,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:32:18,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:32:18,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:32:18,761 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 04:32:18,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:32:18,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:32:18,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:32:18,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:32:18,785 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:32:18,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:32:18,785 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:32:18,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:32:18,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:32:18,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:32:18,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:32:18,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:32:18,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:32:18,787 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:32:18,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:32:18,787 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:32:18,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:32:18,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:32:18,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:32:18,788 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:32:18,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:32:18,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:32:18,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:32:18,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:32:18,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:32:18,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:32:18,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:32:18,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:32:18,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:32:18,790 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=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:32:19,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:32:19,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:32:19,129 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:32:19,130 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:32:19,131 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:32:19,132 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo3.c [2020-08-19 04:32:19,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50bdc95a3/f8324993287746a789572adda5bb744e/FLAGbc68b96a5 [2020-08-19 04:32:19,672 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:32:19,673 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/geo3.c [2020-08-19 04:32:19,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50bdc95a3/f8324993287746a789572adda5bb744e/FLAGbc68b96a5 [2020-08-19 04:32:20,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50bdc95a3/f8324993287746a789572adda5bb744e [2020-08-19 04:32:20,057 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:32:20,059 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:32:20,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:32:20,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:32:20,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:32:20,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:32:20" (1/1) ... [2020-08-19 04:32:20,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b86a7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:20, skipping insertion in model container [2020-08-19 04:32:20,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:32:20" (1/1) ... [2020-08-19 04:32:20,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:32:20,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:32:20,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:32:20,280 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:32:20,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:32:20,311 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:32:20,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:20 WrapperNode [2020-08-19 04:32:20,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:32:20,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:32:20,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:32:20,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:32:20,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:20" (1/1) ... [2020-08-19 04:32:20,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:20" (1/1) ... [2020-08-19 04:32:20,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:20" (1/1) ... [2020-08-19 04:32:20,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:20" (1/1) ... [2020-08-19 04:32:20,411 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:20" (1/1) ... [2020-08-19 04:32:20,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:20" (1/1) ... [2020-08-19 04:32:20,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:20" (1/1) ... [2020-08-19 04:32:20,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:32:20,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:32:20,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:32:20,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:32:20,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:20" (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 04:32:20,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:32:20,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:32:20,480 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 04:32:20,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 04:32:20,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:32:20,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:32:20,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:32:20,481 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 04:32:20,482 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 04:32:20,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 04:32:20,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:32:20,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:32:20,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:32:20,668 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:32:20,668 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 04:32:20,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:32:20 BoogieIcfgContainer [2020-08-19 04:32:20,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:32:20,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:32:20,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:32:20,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:32:20,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:32:20" (1/3) ... [2020-08-19 04:32:20,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ed41d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:32:20, skipping insertion in model container [2020-08-19 04:32:20,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:32:20" (2/3) ... [2020-08-19 04:32:20,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ed41d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:32:20, skipping insertion in model container [2020-08-19 04:32:20,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:32:20" (3/3) ... [2020-08-19 04:32:20,681 INFO L109 eAbstractionObserver]: Analyzing ICFG geo3.c [2020-08-19 04:32:20,691 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:32:20,699 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:32:20,713 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:32:20,737 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:32:20,737 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:32:20,738 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:32:20,738 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:32:20,738 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:32:20,738 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:32:20,738 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:32:20,738 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:32:20,753 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-08-19 04:32:20,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-19 04:32:20,759 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:32:20,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:32:20,760 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:32:20,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:32:20,765 INFO L82 PathProgramCache]: Analyzing trace with hash -64610451, now seen corresponding path program 1 times [2020-08-19 04:32:20,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:32:20,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122128359] [2020-08-19 04:32:20,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:32:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:32:20,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:32:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:32:20,883 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 04:32:20,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122128359] [2020-08-19 04:32:20,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:32:20,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-19 04:32:20,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9372289] [2020-08-19 04:32:20,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-19 04:32:20,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:32:20,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-19 04:32:20,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-19 04:32:20,909 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-08-19 04:32:20,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:32:20,933 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2020-08-19 04:32:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-19 04:32:20,935 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-08-19 04:32:20,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:32:20,944 INFO L225 Difference]: With dead ends: 35 [2020-08-19 04:32:20,945 INFO L226 Difference]: Without dead ends: 15 [2020-08-19 04:32:20,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-19 04:32:20,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-08-19 04:32:20,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-08-19 04:32:20,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-08-19 04:32:20,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-08-19 04:32:20,989 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2020-08-19 04:32:20,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:32:20,989 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-08-19 04:32:20,989 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-19 04:32:20,989 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-08-19 04:32:20,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-19 04:32:20,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:32:20,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:32:20,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:32:20,991 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:32:20,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:32:20,991 INFO L82 PathProgramCache]: Analyzing trace with hash -62822991, now seen corresponding path program 1 times [2020-08-19 04:32:20,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:32:20,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55163345] [2020-08-19 04:32:20,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:32:21,002 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-19 04:32:21,002 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-19 04:32:21,003 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 04:32:21,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:32:21,020 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-19 04:32:21,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:32:21 BoogieIcfgContainer [2020-08-19 04:32:21,021 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:32:21,023 INFO L168 Benchmark]: Toolchain (without parser) took 963.95 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 101.8 MB in the beginning and 145.0 MB in the end (delta: -43.2 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2020-08-19 04:32:21,024 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-19 04:32:21,025 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.49 ms. Allocated memory is still 138.9 MB. Free memory was 101.6 MB in the beginning and 92.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-19 04:32:21,026 INFO L168 Benchmark]: Boogie Preprocessor took 108.06 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 92.0 MB in the beginning and 178.8 MB in the end (delta: -86.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-19 04:32:21,027 INFO L168 Benchmark]: RCFGBuilder took 252.45 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 166.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-19 04:32:21,028 INFO L168 Benchmark]: TraceAbstraction took 346.89 ms. Allocated memory is still 200.8 MB. Free memory was 166.4 MB in the beginning and 145.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-08-19 04:32:21,032 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 251.49 ms. Allocated memory is still 138.9 MB. Free memory was 101.6 MB in the beginning and 92.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.06 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 92.0 MB in the beginning and 178.8 MB in the end (delta: -86.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 252.45 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 166.4 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 346.89 ms. Allocated memory is still 200.8 MB. Free memory was 166.4 MB in the beginning and 145.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: 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: [L20] int z, a, k; [L21] int x, y, c; [L22] z = __VERIFIER_nondet_int() [L23] a = __VERIFIER_nondet_int() [L24] k = __VERIFIER_nondet_int() [L26] x = a [L27] y = 1 [L28] c = 1 [L30] COND TRUE 1 [L31] CALL __VERIFIER_assert(z*x - x + a - a*z*y == 0) [L13] COND TRUE !(cond) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...