/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=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/terminator_01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:07:35,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:07:35,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:07:36,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:07:36,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:07:36,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:07:36,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:07:36,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:07:36,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:07:36,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:07:36,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:07:36,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:07:36,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:07:36,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:07:36,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:07:36,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:07:36,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:07:36,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:07:36,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:07:36,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:07:36,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:07:36,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:07:36,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:07:36,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:07:36,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 06:07:36,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:07:36,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:07:36,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:07:36,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:07:36,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:07:36,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:07:36,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:07:36,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:07:36,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:07:36,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:07:36,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:07:36,071 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 06:07:36,118 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:07:36,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:07:36,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:07:36,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:07:36,121 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:07:36,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:07:36,121 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:07:36,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:07:36,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:07:36,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:07:36,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:07:36,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:07:36,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:07:36,124 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:07:36,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:07:36,124 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:07:36,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:07:36,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:07:36,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:07:36,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:07:36,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:07:36,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:07:36,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:07:36,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:07:36,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:07:36,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:07:36,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:07:36,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:07:36,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:07:36,127 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=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 06:07:36,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:07:36,464 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:07:36,467 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:07:36,469 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:07:36,469 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:07:36,470 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_01.c [2020-08-19 06:07:36,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c16ee397f/0a34b7e2c8404c2daecac3c47cfe631a/FLAGfa09f9250 [2020-08-19 06:07:37,035 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:07:37,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/terminator_01.c [2020-08-19 06:07:37,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c16ee397f/0a34b7e2c8404c2daecac3c47cfe631a/FLAGfa09f9250 [2020-08-19 06:07:37,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c16ee397f/0a34b7e2c8404c2daecac3c47cfe631a [2020-08-19 06:07:37,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:07:37,392 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:07:37,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:07:37,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:07:37,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:07:37,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:07:37" (1/1) ... [2020-08-19 06:07:37,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:37, skipping insertion in model container [2020-08-19 06:07:37,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:07:37" (1/1) ... [2020-08-19 06:07:37,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:07:37,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:07:37,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:07:37,614 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:07:37,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:07:37,650 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:07:37,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:37 WrapperNode [2020-08-19 06:07:37,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:07:37,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:07:37,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:07:37,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:07:37,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:37" (1/1) ... [2020-08-19 06:07:37,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:37" (1/1) ... [2020-08-19 06:07:37,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:37" (1/1) ... [2020-08-19 06:07:37,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:37" (1/1) ... [2020-08-19 06:07:37,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:37" (1/1) ... [2020-08-19 06:07:37,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:37" (1/1) ... [2020-08-19 06:07:37,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:37" (1/1) ... [2020-08-19 06:07:37,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:07:37,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:07:37,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:07:37,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:07:37,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:37" (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 06:07:37,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:07:37,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:07:37,849 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 06:07:37,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:07:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:07:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 06:07:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:07:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:07:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 06:07:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 06:07:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 06:07:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 06:07:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 06:07:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:07:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:07:38,062 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:07:38,062 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 06:07:38,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:07:38 BoogieIcfgContainer [2020-08-19 06:07:38,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:07:38,068 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:07:38,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:07:38,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:07:38,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:07:37" (1/3) ... [2020-08-19 06:07:38,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c25baa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:07:38, skipping insertion in model container [2020-08-19 06:07:38,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:07:37" (2/3) ... [2020-08-19 06:07:38,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c25baa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:07:38, skipping insertion in model container [2020-08-19 06:07:38,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:07:38" (3/3) ... [2020-08-19 06:07:38,076 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_01.c [2020-08-19 06:07:38,088 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:07:38,095 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:07:38,112 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:07:38,148 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:07:38,148 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:07:38,149 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:07:38,149 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:07:38,149 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:07:38,149 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:07:38,150 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:07:38,150 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:07:38,176 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-08-19 06:07:38,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-08-19 06:07:38,185 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:07:38,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:07:38,187 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:07:38,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:07:38,194 INFO L82 PathProgramCache]: Analyzing trace with hash -564387615, now seen corresponding path program 1 times [2020-08-19 06:07:38,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:07:38,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478378424] [2020-08-19 06:07:38,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:07:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:38,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:07:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:07:38,397 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 06:07:38,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478378424] [2020-08-19 06:07:38,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:07:38,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:07:38,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916714247] [2020-08-19 06:07:38,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:07:38,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:07:38,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:07:38,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:07:38,426 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 3 states. [2020-08-19 06:07:38,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:07:38,492 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-08-19 06:07:38,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:07:38,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-08-19 06:07:38,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:07:38,503 INFO L225 Difference]: With dead ends: 32 [2020-08-19 06:07:38,507 INFO L226 Difference]: Without dead ends: 13 [2020-08-19 06:07:38,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 06:07:38,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-08-19 06:07:38,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-08-19 06:07:38,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-08-19 06:07:38,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-08-19 06:07:38,549 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-08-19 06:07:38,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:07:38,549 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-08-19 06:07:38,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:07:38,550 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-08-19 06:07:38,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 06:07:38,550 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:07:38,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:07:38,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:07:38,551 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:07:38,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:07:38,552 INFO L82 PathProgramCache]: Analyzing trace with hash -538271495, now seen corresponding path program 1 times [2020-08-19 06:07:38,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:07:38,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022310377] [2020-08-19 06:07:38,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:07:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 06:07:38,582 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 06:07:38,582 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 06:07:38,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:07:38,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:07:38 BoogieIcfgContainer [2020-08-19 06:07:38,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:07:38,604 INFO L168 Benchmark]: Toolchain (without parser) took 1211.29 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 103.7 MB in the beginning and 141.8 MB in the end (delta: -38.1 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:38,605 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 06:07:38,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.30 ms. Allocated memory is still 140.0 MB. Free memory was 103.5 MB in the beginning and 93.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:38,607 INFO L168 Benchmark]: Boogie Preprocessor took 124.83 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.7 MB in the beginning and 181.0 MB in the end (delta: -87.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:38,608 INFO L168 Benchmark]: RCFGBuilder took 290.94 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 167.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:38,609 INFO L168 Benchmark]: TraceAbstraction took 532.81 ms. Allocated memory is still 202.9 MB. Free memory was 167.4 MB in the beginning and 141.8 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-08-19 06:07:38,614 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 257.30 ms. Allocated memory is still 140.0 MB. Free memory was 103.5 MB in the beginning and 93.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.83 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.7 MB in the beginning and 181.0 MB in the end (delta: -87.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 290.94 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 167.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 532.81 ms. Allocated memory is still 202.9 MB. Free memory was 167.4 MB in the beginning and 141.8 MB in the end (delta: 25.7 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] int x=__VERIFIER_nondet_int(); [L13] int x=__VERIFIER_nondet_int(); [L14] int *p = &x; [L16] EXPR \read(x) [L16] COND FALSE !(x<100) [L19] CALL __VERIFIER_assert(0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 5 SDslu, 4 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 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, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 190 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 proved your program to be incorrect! Received shutdown request...