/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 --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/standard_sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:03:52,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:03:52,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:03:52,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:03:52,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:03:52,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:03:52,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:03:52,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:03:52,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:03:52,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:03:52,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:03:52,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:03:52,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:03:52,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:03:52,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:03:52,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:03:52,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:03:52,701 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:03:52,705 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:03:52,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:03:52,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:03:52,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:03:52,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:03:52,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:03:52,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:03:52,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:03:52,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:03:52,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:03:52,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:03:52,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:03:52,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:03:52,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:03:52,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:03:52,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:03:52,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:03:52,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:03:52,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:03:52,740 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:03:52,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:03:52,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:03:52,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:03:52,744 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 [2020-10-14 18:03:52,777 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:03:52,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:03:52,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:03:52,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:03:52,780 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:03:52,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:03:52,780 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:03:52,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:03:52,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:03:52,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:03:52,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:03:52,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:03:52,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:03:52,781 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:03:52,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:03:52,782 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:03:52,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:03:52,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:03:52,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:03:52,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:03:52,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:03:52,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:03:52,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:03:52,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:03:52,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:03:52,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:03:52,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:03:52,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:03:52,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:03:52,785 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.rcfgbuilder: Size of a code block -> SequenceOfStatements 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:03:53,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:03:53,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:03:53,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:03:53,114 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:03:53,115 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:03:53,116 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_sentinel-2.i [2020-10-14 18:03:53,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cee27f29e/7d23cf2076cd4b028ad5053f34072b68/FLAG4c660f9ad [2020-10-14 18:03:53,664 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:03:53,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_sentinel-2.i [2020-10-14 18:03:53,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cee27f29e/7d23cf2076cd4b028ad5053f34072b68/FLAG4c660f9ad [2020-10-14 18:03:54,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cee27f29e/7d23cf2076cd4b028ad5053f34072b68 [2020-10-14 18:03:54,033 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:03:54,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:03:54,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:03:54,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:03:54,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:03:54,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:03:54" (1/1) ... [2020-10-14 18:03:54,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:54, skipping insertion in model container [2020-10-14 18:03:54,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:03:54" (1/1) ... [2020-10-14 18:03:54,054 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:03:54,076 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:03:54,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:03:54,252 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:03:54,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:03:54,297 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:03:54,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:54 WrapperNode [2020-10-14 18:03:54,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:03:54,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:03:54,299 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:03:54,299 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:03:54,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:54" (1/1) ... [2020-10-14 18:03:54,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:54" (1/1) ... [2020-10-14 18:03:54,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:54" (1/1) ... [2020-10-14 18:03:54,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:54" (1/1) ... [2020-10-14 18:03:54,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:54" (1/1) ... [2020-10-14 18:03:54,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:54" (1/1) ... [2020-10-14 18:03:54,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:54" (1/1) ... [2020-10-14 18:03:54,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:03:54,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:03:54,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:03:54,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:03:54,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:54" (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 [2020-10-14 18:03:54,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:03:54,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:03:54,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:03:54,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:03:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:03:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:03:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:03:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:03:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:03:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:03:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:03:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:03:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:03:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:03:54,752 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:03:54,753 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 18:03:54,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:03:54 BoogieIcfgContainer [2020-10-14 18:03:54,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:03:54,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:03:54,761 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:03:54,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:03:54,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:03:54" (1/3) ... [2020-10-14 18:03:54,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78379780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:03:54, skipping insertion in model container [2020-10-14 18:03:54,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:03:54" (2/3) ... [2020-10-14 18:03:54,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78379780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:03:54, skipping insertion in model container [2020-10-14 18:03:54,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:03:54" (3/3) ... [2020-10-14 18:03:54,768 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_sentinel-2.i [2020-10-14 18:03:54,783 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:03:54,790 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:03:54,808 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:03:54,837 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:03:54,838 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:03:54,838 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:03:54,838 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:03:54,838 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:03:54,839 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:03:54,839 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:03:54,839 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:03:54,863 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-10-14 18:03:54,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 18:03:54,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:54,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:54,872 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:54,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:54,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1937003712, now seen corresponding path program 1 times [2020-10-14 18:03:54,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:54,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [710520859] [2020-10-14 18:03:54,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:55,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:55,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:55,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:55,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:55,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 18:03:55,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:03:55,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-14 18:03:55,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:55,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:55,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:03:55,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 18:03:55,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 18:03:55,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:03:55,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:55,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:55,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:55,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:55,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:55,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:03:55,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:55,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:55,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:55,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:55,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:55,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:03:55,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [710520859] [2020-10-14 18:03:55,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:03:55,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 18:03:55,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864148084] [2020-10-14 18:03:55,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:03:55,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:55,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:03:55,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:03:55,507 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 6 states. [2020-10-14 18:03:55,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:55,725 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2020-10-14 18:03:55,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 18:03:55,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-10-14 18:03:55,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:55,737 INFO L225 Difference]: With dead ends: 48 [2020-10-14 18:03:55,737 INFO L226 Difference]: Without dead ends: 18 [2020-10-14 18:03:55,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-14 18:03:55,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-10-14 18:03:55,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-10-14 18:03:55,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-14 18:03:55,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-10-14 18:03:55,781 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-10-14 18:03:55,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:55,782 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-10-14 18:03:55,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:03:55,782 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-10-14 18:03:55,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 18:03:55,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:55,784 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:55,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:03:55,784 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:55,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:55,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1194401195, now seen corresponding path program 1 times [2020-10-14 18:03:55,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:55,786 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209397987] [2020-10-14 18:03:55,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:55,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:55,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:56,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:56,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 18:03:56,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:03:56,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-14 18:03:56,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:56,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:56,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 18:03:56,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 18:03:56,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 18:03:56,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:56,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:56,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:56,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:56,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:56,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:56,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:03:56,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:56,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:56,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:56,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:56,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:03:56,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209397987] [2020-10-14 18:03:56,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:56,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 18:03:56,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856677469] [2020-10-14 18:03:56,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 18:03:56,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:56,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 18:03:56,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:03:56,192 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 8 states. [2020-10-14 18:03:56,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:56,319 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-10-14 18:03:56,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 18:03:56,319 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-10-14 18:03:56,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:56,320 INFO L225 Difference]: With dead ends: 25 [2020-10-14 18:03:56,321 INFO L226 Difference]: Without dead ends: 20 [2020-10-14 18:03:56,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-14 18:03:56,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-14 18:03:56,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-14 18:03:56,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-14 18:03:56,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-14 18:03:56,328 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2020-10-14 18:03:56,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:56,329 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-14 18:03:56,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 18:03:56,329 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-14 18:03:56,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 18:03:56,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:03:56,330 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:03:56,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:03:56,331 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:03:56,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:03:56,331 INFO L82 PathProgramCache]: Analyzing trace with hash -157875686, now seen corresponding path program 2 times [2020-10-14 18:03:56,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:03:56,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650588461] [2020-10-14 18:03:56,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:03:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:56,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:56,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:56,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:56,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 18:03:56,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:03:56,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 18:03:56,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:56,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:03:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 18:03:56,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 18:03:56,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:56,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:03:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:03:56,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:03:56,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:03:56,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:03:56,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:03:56,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:03:56,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:03:56,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:03:56,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:03:56,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:03:56,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:03:56,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:03:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:03:56,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650588461] [2020-10-14 18:03:56,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:03:56,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:03:56,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259700300] [2020-10-14 18:03:56,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:03:56,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:03:56,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:03:56,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:03:56,706 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 10 states. [2020-10-14 18:03:56,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:03:56,798 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-10-14 18:03:56,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 18:03:56,799 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-10-14 18:03:56,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:03:56,800 INFO L225 Difference]: With dead ends: 20 [2020-10-14 18:03:56,800 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 18:03:56,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:03:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 18:03:56,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 18:03:56,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 18:03:56,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 18:03:56,802 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-14 18:03:56,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:03:56,803 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 18:03:56,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:03:56,803 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 18:03:56,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 18:03:56,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:03:56,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 18:03:56,868 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 18:03:56,868 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-14 18:03:56,869 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 18:03:56,869 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 18:03:56,869 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 18:03:56,869 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 18:03:56,869 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 18:03:56,870 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 23) no Hoare annotation was computed. [2020-10-14 18:03:56,870 INFO L268 CegarLoopResult]: For program point L17-1(lines 17 19) no Hoare annotation was computed. [2020-10-14 18:03:56,870 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 19) the Hoare annotation is: (and (<= main_~i~1 main_~pos~0) (= (select (select |#memory_int| |main_~#a~0.base|) (+ (* main_~pos~0 4) |main_~#a~0.offset|)) main_~marker~0)) [2020-10-14 18:03:56,870 INFO L264 CegarLoopResult]: At program point L17-4(lines 17 19) the Hoare annotation is: (<= main_~i~1 main_~pos~0) [2020-10-14 18:03:56,871 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 23) no Hoare annotation was computed. [2020-10-14 18:03:56,871 INFO L268 CegarLoopResult]: For program point L9-2(lines 9 12) no Hoare annotation was computed. [2020-10-14 18:03:56,871 INFO L271 CegarLoopResult]: At program point L9-3(lines 9 12) the Hoare annotation is: true [2020-10-14 18:03:56,871 INFO L268 CegarLoopResult]: For program point L9-4(lines 4 23) no Hoare annotation was computed. [2020-10-14 18:03:56,871 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 4 23) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-10-14 18:03:56,872 INFO L268 CegarLoopResult]: For program point L14(lines 14 21) no Hoare annotation was computed. [2020-10-14 18:03:56,872 INFO L268 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-10-14 18:03:56,872 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2020-10-14 18:03:56,872 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2020-10-14 18:03:56,872 INFO L268 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-14 18:03:56,873 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-14 18:03:56,873 INFO L268 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-10-14 18:03:56,890 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 18:03:56,895 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 18:03:56,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 06:03:56 BoogieIcfgContainer [2020-10-14 18:03:56,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 18:03:56,902 INFO L168 Benchmark]: Toolchain (without parser) took 2866.28 ms. Allocated memory was 147.8 MB in the beginning and 232.8 MB in the end (delta: 84.9 MB). Free memory was 104.3 MB in the beginning and 99.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 89.9 MB. Max. memory is 7.1 GB. [2020-10-14 18:03:56,903 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-14 18:03:56,904 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.26 ms. Allocated memory is still 147.8 MB. Free memory was 104.3 MB in the beginning and 94.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-14 18:03:56,906 INFO L168 Benchmark]: Boogie Preprocessor took 131.60 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 94.3 MB in the beginning and 181.9 MB in the end (delta: -87.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-14 18:03:56,906 INFO L168 Benchmark]: RCFGBuilder took 327.63 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 167.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-10-14 18:03:56,908 INFO L168 Benchmark]: TraceAbstraction took 2138.49 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 167.1 MB in the beginning and 99.3 MB in the end (delta: 67.7 MB). Peak memory consumption was 96.1 MB. Max. memory is 7.1 GB. [2020-10-14 18:03:56,912 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.0 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 262.26 ms. Allocated memory is still 147.8 MB. Free memory was 104.3 MB in the beginning and 94.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.60 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 94.3 MB in the beginning and 181.9 MB in the end (delta: -87.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 327.63 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 167.1 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2138.49 ms. Allocated memory was 204.5 MB in the beginning and 232.8 MB in the end (delta: 28.3 MB). Free memory was 167.1 MB in the beginning and 99.3 MB in the end (delta: 67.7 MB). Peak memory consumption was 96.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant [2020-10-14 18:03:56,929 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-14 18:03:56,929 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: i <= pos && unknown-#memory_int-unknown[a][pos * 4 + a] == marker - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 43 SDtfs, 27 SDslu, 149 SDs, 0 SdLazy, 153 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 35 HoareAnnotationTreeSize, 11 FomulaSimplifications, 53 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 3364 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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 correct! Received shutdown request...