/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/bitvector/parity.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:12:31,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:12:31,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:12:31,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:12:31,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:12:31,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:12:31,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:12:31,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:12:31,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:12:31,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:12:31,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:12:31,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:12:31,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:12:31,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:12:31,171 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:12:31,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:12:31,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:12:31,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:12:31,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:12:31,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:12:31,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:12:31,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:12:31,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:12:31,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:12:31,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:12:31,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:12:31,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:12:31,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:12:31,187 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:12:31,188 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:12:31,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:12:31,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:12:31,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:12:31,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:12:31,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:12:31,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:12:31,192 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:12:31,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:12:31,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:12:31,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:12:31,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:12:31,195 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 00:12:31,218 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:12:31,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:12:31,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:12:31,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:12:31,220 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:12:31,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:12:31,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:12:31,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:12:31,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:12:31,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:12:31,222 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:12:31,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:12:31,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:12:31,222 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:12:31,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:12:31,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:12:31,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:12:31,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:12:31,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:12:31,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:12:31,224 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:12:31,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:12:31,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:12:31,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:12:31,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:12:31,225 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:12:31,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:12:31,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:12:31,225 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:12:31,225 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 00:12:31,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:12:31,554 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:12:31,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:12:31,559 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:12:31,559 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:12:31,560 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/parity.i [2020-10-14 00:12:31,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d7d667da/75e4fda414b74ad1966a0f2d4c00222c/FLAG32310b645 [2020-10-14 00:12:32,098 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:12:32,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/parity.i [2020-10-14 00:12:32,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d7d667da/75e4fda414b74ad1966a0f2d4c00222c/FLAG32310b645 [2020-10-14 00:12:32,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d7d667da/75e4fda414b74ad1966a0f2d4c00222c [2020-10-14 00:12:32,488 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:12:32,490 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:12:32,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:12:32,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:12:32,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:12:32,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:12:32" (1/1) ... [2020-10-14 00:12:32,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@419c06a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:32, skipping insertion in model container [2020-10-14 00:12:32,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:12:32" (1/1) ... [2020-10-14 00:12:32,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:12:32,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:12:32,717 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:12:32,722 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:12:32,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:12:32,758 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:12:32,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:32 WrapperNode [2020-10-14 00:12:32,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:12:32,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:12:32,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:12:32,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:12:32,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:32" (1/1) ... [2020-10-14 00:12:32,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:32" (1/1) ... [2020-10-14 00:12:32,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:32" (1/1) ... [2020-10-14 00:12:32,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:32" (1/1) ... [2020-10-14 00:12:32,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:32" (1/1) ... [2020-10-14 00:12:32,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:32" (1/1) ... [2020-10-14 00:12:32,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:32" (1/1) ... [2020-10-14 00:12:32,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:12:32,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:12:32,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:12:32,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:12:32,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:32" (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 00:12:32,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:12:32,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:12:32,959 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 00:12:32,960 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:12:32,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:12:32,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 00:12:32,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 00:12:32,962 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-14 00:12:32,962 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-14 00:12:32,962 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-14 00:12:32,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:12:32,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:12:32,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:12:33,179 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:12:33,180 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:12:33,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:12:33 BoogieIcfgContainer [2020-10-14 00:12:33,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:12:33,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:12:33,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:12:33,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:12:33,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:12:32" (1/3) ... [2020-10-14 00:12:33,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb611c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:12:33, skipping insertion in model container [2020-10-14 00:12:33,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:32" (2/3) ... [2020-10-14 00:12:33,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb611c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:12:33, skipping insertion in model container [2020-10-14 00:12:33,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:12:33" (3/3) ... [2020-10-14 00:12:33,195 INFO L109 eAbstractionObserver]: Analyzing ICFG parity.i [2020-10-14 00:12:33,210 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:12:33,219 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:12:33,234 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:12:33,296 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:12:33,297 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:12:33,297 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:12:33,300 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:12:33,300 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:12:33,300 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:12:33,301 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:12:33,301 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:12:33,334 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-14 00:12:33,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 00:12:33,339 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:33,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:33,341 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:33,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:33,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1135268867, now seen corresponding path program 1 times [2020-10-14 00:12:33,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:33,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110008222] [2020-10-14 00:12:33,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:33,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:33,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:33,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:33,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 00:12:33,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 00:12:33,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-14 00:12:33,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:33,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:33,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:33,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:12:33,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:33,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 00:12:33,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:33,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:33,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:33,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:12:33,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:33,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:12:33,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:33,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:33,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:33,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:12:33,652 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 00:12:33,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110008222] [2020-10-14 00:12:33,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:12:33,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-14 00:12:33,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530808838] [2020-10-14 00:12:33,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-14 00:12:33,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:33,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-14 00:12:33,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 00:12:33,679 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-10-14 00:12:33,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:33,704 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2020-10-14 00:12:33,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-14 00:12:33,706 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-10-14 00:12:33,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:33,714 INFO L225 Difference]: With dead ends: 36 [2020-10-14 00:12:33,714 INFO L226 Difference]: Without dead ends: 15 [2020-10-14 00:12:33,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 00:12:33,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-14 00:12:33,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-14 00:12:33,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-14 00:12:33,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2020-10-14 00:12:33,756 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2020-10-14 00:12:33,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:33,757 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2020-10-14 00:12:33,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-14 00:12:33,757 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2020-10-14 00:12:33,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 00:12:33,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:33,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:33,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:12:33,758 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:33,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:33,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1987092530, now seen corresponding path program 1 times [2020-10-14 00:12:33,759 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:33,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474516] [2020-10-14 00:12:33,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:33,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:33,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:33,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 00:12:33,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:33,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 00:12:33,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:33,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 00:12:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 00:12:33,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 00:12:33,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:12:34,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:34,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:34,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:34,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:12:34,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:34,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:34,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:34,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:34,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:34,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:34,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:12:34,111 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 00:12:34,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474516] [2020-10-14 00:12:34,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:12:34,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 00:12:34,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165957895] [2020-10-14 00:12:34,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 00:12:34,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:34,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 00:12:34,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 00:12:34,115 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 6 states. [2020-10-14 00:12:34,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:34,197 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-10-14 00:12:34,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 00:12:34,197 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-14 00:12:34,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:34,200 INFO L225 Difference]: With dead ends: 34 [2020-10-14 00:12:34,200 INFO L226 Difference]: Without dead ends: 21 [2020-10-14 00:12:34,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 00:12:34,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-14 00:12:34,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-10-14 00:12:34,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-14 00:12:34,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-14 00:12:34,209 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2020-10-14 00:12:34,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:34,209 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-14 00:12:34,209 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 00:12:34,210 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-14 00:12:34,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 00:12:34,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:34,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:34,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:12:34,211 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:34,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:34,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1988939572, now seen corresponding path program 1 times [2020-10-14 00:12:34,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:34,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444630275] [2020-10-14 00:12:34,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 00:12:34,225 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 00:12:34,225 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 00:12:34,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:12:34,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 12:12:34 BoogieIcfgContainer [2020-10-14 00:12:34,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 00:12:34,248 INFO L168 Benchmark]: Toolchain (without parser) took 1757.80 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 104.0 MB in the beginning and 115.7 MB in the end (delta: -11.7 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. [2020-10-14 00:12:34,249 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 00:12:34,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.70 ms. Allocated memory is still 147.3 MB. Free memory was 103.6 MB in the beginning and 93.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-14 00:12:34,251 INFO L168 Benchmark]: Boogie Preprocessor took 131.48 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 93.5 MB in the beginning and 182.1 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-14 00:12:34,252 INFO L168 Benchmark]: RCFGBuilder took 294.65 ms. Allocated memory is still 203.4 MB. Free memory was 181.7 MB in the beginning and 168.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-10-14 00:12:34,253 INFO L168 Benchmark]: TraceAbstraction took 1057.52 ms. Allocated memory is still 203.4 MB. Free memory was 167.4 MB in the beginning and 115.7 MB in the end (delta: 51.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. [2020-10-14 00:12:34,257 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.4 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 268.70 ms. Allocated memory is still 147.3 MB. Free memory was 103.6 MB in the beginning and 93.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.48 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 93.5 MB in the beginning and 182.1 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 294.65 ms. Allocated memory is still 203.4 MB. Free memory was 181.7 MB in the beginning and 168.4 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1057.52 ms. Allocated memory is still 203.4 MB. Free memory was 167.4 MB in the beginning and 115.7 MB in the end (delta: 51.7 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 43, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L23] unsigned int v = __VERIFIER_nondet_uint(); [L24] unsigned int v1; [L25] unsigned int v2; [L26] char parity1; [L27] char parity2; [L28] v1 = v [L29] parity1 = (char)0 [L30] COND FALSE !(v1 != 0) [L38] v2 = v [L39] parity2 = (char)0 [L40] v2 = v2 ^ (v2 >> 1u) [L41] v2 = v2 ^ (v2 >> 2u) [L42] v2 = (v2 & 286331153U) * 286331153U [L43] COND FALSE !(((v2 >> 28u) & 1u) == 0) [L46] parity2 = (char)1 [L48] CALL __VERIFIER_assert(parity1 == parity2) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 5 SDslu, 54 SDs, 0 SdLazy, 17 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 594 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...