/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/nla-digbench/hard2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:39:49,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:39:49,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:39:49,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:39:49,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:39:49,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:39:49,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:39:49,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:39:49,935 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:39:49,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:39:49,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:39:49,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:39:49,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:39:49,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:39:49,945 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:39:49,948 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:39:49,949 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:39:49,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:39:49,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:39:49,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:39:49,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:39:49,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:39:49,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:39:49,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:39:49,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:39:49,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:39:49,974 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:39:49,977 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:39:49,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:39:49,978 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:39:49,979 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:39:49,980 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:39:49,981 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:39:49,982 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:39:49,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:39:49,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:39:49,983 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:39:49,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:39:49,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:39:49,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:39:49,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:39:49,987 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 05:39:50,025 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:39:50,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:39:50,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:39:50,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:39:50,027 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:39:50,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:39:50,028 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:39:50,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:39:50,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:39:50,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:39:50,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:39:50,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:39:50,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:39:50,030 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:39:50,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:39:50,031 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:39:50,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:39:50,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:39:50,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:39:50,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:39:50,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:39:50,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:39:50,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:39:50,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:39:50,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:39:50,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:39:50,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:39:50,032 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:39:50,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:39:50,033 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:39:50,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:39:50,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:39:50,392 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:39:50,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:39:50,395 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:39:50,395 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/hard2.c [2020-10-14 05:39:50,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb498e27a/01d01317b8b1418db4d0e978663ce6ea/FLAGb78f3585b [2020-10-14 05:39:50,902 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:39:50,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/nla-digbench/hard2.c [2020-10-14 05:39:50,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb498e27a/01d01317b8b1418db4d0e978663ce6ea/FLAGb78f3585b [2020-10-14 05:39:51,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb498e27a/01d01317b8b1418db4d0e978663ce6ea [2020-10-14 05:39:51,299 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:39:51,301 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:39:51,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:39:51,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:39:51,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:39:51,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:39:51" (1/1) ... [2020-10-14 05:39:51,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f4f649f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:51, skipping insertion in model container [2020-10-14 05:39:51,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:39:51" (1/1) ... [2020-10-14 05:39:51,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:39:51,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:39:51,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:39:51,544 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:39:51,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:39:51,579 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:39:51,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:51 WrapperNode [2020-10-14 05:39:51,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:39:51,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:39:51,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:39:51,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:39:51,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:51" (1/1) ... [2020-10-14 05:39:51,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:51" (1/1) ... [2020-10-14 05:39:51,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:51" (1/1) ... [2020-10-14 05:39:51,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:51" (1/1) ... [2020-10-14 05:39:51,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:51" (1/1) ... [2020-10-14 05:39:51,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:51" (1/1) ... [2020-10-14 05:39:51,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:51" (1/1) ... [2020-10-14 05:39:51,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:39:51,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:39:51,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:39:51,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:39:51,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:51" (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 05:39:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:39:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:39:51,788 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 05:39:51,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 05:39:51,788 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:39:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:39:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 05:39:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:39:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 05:39:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 05:39:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:39:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:39:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:39:52,162 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:39:52,162 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-14 05:39:52,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:39:52 BoogieIcfgContainer [2020-10-14 05:39:52,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:39:52,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:39:52,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:39:52,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:39:52,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:39:51" (1/3) ... [2020-10-14 05:39:52,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78acb7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:39:52, skipping insertion in model container [2020-10-14 05:39:52,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:51" (2/3) ... [2020-10-14 05:39:52,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78acb7ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:39:52, skipping insertion in model container [2020-10-14 05:39:52,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:39:52" (3/3) ... [2020-10-14 05:39:52,175 INFO L109 eAbstractionObserver]: Analyzing ICFG hard2.c [2020-10-14 05:39:52,186 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:39:52,193 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:39:52,207 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:39:52,232 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:39:52,233 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:39:52,233 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:39:52,233 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:39:52,233 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:39:52,233 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:39:52,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:39:52,234 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:39:52,263 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-14 05:39:52,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 05:39:52,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:39:52,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:39:52,271 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:39:52,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:39:52,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1226112534, now seen corresponding path program 1 times [2020-10-14 05:39:52,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:39:52,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [314324405] [2020-10-14 05:39:52,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:39:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:39:52,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:39:52,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:39:52,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 05:39:52,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:39:52,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-14 05:39:52,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:39:52,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:39:52,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:39:52,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:39:52,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:39:52,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:39:52,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:39:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:39:52,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:39:52,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:39:52,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:39:52,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:39:52,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:39:52,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:39:52,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:39:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:39:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:39:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:39:52,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:39:52,568 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 05:39:52,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [314324405] [2020-10-14 05:39:52,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:39:52,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:39:52,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106630603] [2020-10-14 05:39:52,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:39:52,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:39:52,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:39:52,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:39:52,596 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2020-10-14 05:39:52,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:39:52,698 INFO L93 Difference]: Finished difference Result 65 states and 110 transitions. [2020-10-14 05:39:52,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:39:52,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-14 05:39:52,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:39:52,714 INFO L225 Difference]: With dead ends: 65 [2020-10-14 05:39:52,714 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 05:39:52,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:39:52,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 05:39:52,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2020-10-14 05:39:52,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 05:39:52,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2020-10-14 05:39:52,764 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 10 [2020-10-14 05:39:52,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:39:52,765 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2020-10-14 05:39:52,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:39:52,765 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2020-10-14 05:39:52,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 05:39:52,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:39:52,766 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:39:52,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:39:52,767 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:39:52,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:39:52,768 INFO L82 PathProgramCache]: Analyzing trace with hash -313706808, now seen corresponding path program 1 times [2020-10-14 05:39:52,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:39:52,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238137092] [2020-10-14 05:39:52,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:39:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:39:52,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:39:52,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:39:52,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 05:39:52,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:39:52,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 05:39:52,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:39:52,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:39:52,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:39:52,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 05:39:52,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:39:52,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:39:52,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:39:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:39:52,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:39:52,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:39:52,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 05:39:52,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:39:52,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:39:52,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:39:52,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:39:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:39:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:39:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:39:52,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:39:52,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:39:52,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:39:52,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:39:53,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:39:53,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 05:39:53,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:39:53,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 05:39:53,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:39:53,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:39:53,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:39:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:39:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:39:53,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:39:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:39:53,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238137092] [2020-10-14 05:39:53,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:39:53,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 05:39:53,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444936673] [2020-10-14 05:39:53,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 05:39:53,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:39:53,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 05:39:53,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:39:53,027 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand 5 states. [2020-10-14 05:39:53,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:39:53,103 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-10-14 05:39:53,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 05:39:53,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-14 05:39:53,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:39:53,105 INFO L225 Difference]: With dead ends: 40 [2020-10-14 05:39:53,106 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 05:39:53,107 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 05:39:53,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 05:39:53,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-10-14 05:39:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 05:39:53,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2020-10-14 05:39:53,116 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 15 [2020-10-14 05:39:53,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:39:53,117 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2020-10-14 05:39:53,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 05:39:53,117 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2020-10-14 05:39:53,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 05:39:53,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:39:53,118 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:39:53,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:39:53,119 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:39:53,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:39:53,119 INFO L82 PathProgramCache]: Analyzing trace with hash -346835690, now seen corresponding path program 1 times [2020-10-14 05:39:53,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:39:53,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478905734] [2020-10-14 05:39:53,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:39:53,130 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-10-14 05:39:53,130 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-10-14 05:39:53,130 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 05:39:53,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:39:53,152 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-14 05:39:53,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:39:53 BoogieIcfgContainer [2020-10-14 05:39:53,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 05:39:53,158 INFO L168 Benchmark]: Toolchain (without parser) took 1853.90 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 104.4 MB in the beginning and 111.6 MB in the end (delta: -7.2 MB). Peak memory consumption was 49.9 MB. Max. memory is 7.1 GB. [2020-10-14 05:39:53,160 INFO L168 Benchmark]: CDTParser took 0.17 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: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 05:39:53,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.93 ms. Allocated memory is still 147.8 MB. Free memory was 103.9 MB in the beginning and 94.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-10-14 05:39:53,162 INFO L168 Benchmark]: Boogie Preprocessor took 137.91 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 94.2 MB in the beginning and 183.8 MB in the end (delta: -89.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-14 05:39:53,163 INFO L168 Benchmark]: RCFGBuilder took 448.33 ms. Allocated memory is still 205.0 MB. Free memory was 183.8 MB in the beginning and 169.6 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-10-14 05:39:53,165 INFO L168 Benchmark]: TraceAbstraction took 984.97 ms. Allocated memory is still 205.0 MB. Free memory was 168.6 MB in the beginning and 111.6 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. [2020-10-14 05:39:53,176 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.93 ms. Allocated memory is still 147.8 MB. Free memory was 103.9 MB in the beginning and 94.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.91 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 94.2 MB in the beginning and 183.8 MB in the end (delta: -89.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 448.33 ms. Allocated memory is still 205.0 MB. Free memory was 183.8 MB in the beginning and 169.6 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 984.97 ms. Allocated memory is still 205.0 MB. Free memory was 168.6 MB in the beginning and 111.6 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 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: [L21] int A, B; [L22] int r, d, p, q; [L23] A = __VERIFIER_nondet_int() [L24] B = 1 [L26] r = A [L27] d = B [L28] p = 1 [L29] q = 0 [L31] COND TRUE 1 [L32] CALL __VERIFIER_assert(q == 0) [L13] COND FALSE !(!(cond)) [L32] RET __VERIFIER_assert(q == 0) [L33] CALL __VERIFIER_assert(r == A) [L13] COND FALSE !(!(cond)) [L33] RET __VERIFIER_assert(r == A) [L34] CALL __VERIFIER_assert(d == B * p) [L13] COND TRUE !(cond) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 66 SDtfs, 24 SDslu, 159 SDs, 0 SdLazy, 50 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=2, 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, 2 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 535 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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...