/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-loops/diamond_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 00:12:02,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 00:12:02,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 00:12:02,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 00:12:02,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 00:12:02,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 00:12:02,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 00:12:02,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 00:12:02,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 00:12:02,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 00:12:02,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 00:12:02,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 00:12:02,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 00:12:02,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 00:12:02,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 00:12:02,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 00:12:02,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 00:12:02,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 00:12:02,982 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 00:12:02,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 00:12:02,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 00:12:02,994 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 00:12:02,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 00:12:02,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 00:12:03,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 00:12:03,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 00:12:03,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 00:12:03,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 00:12:03,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 00:12:03,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 00:12:03,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 00:12:03,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 00:12:03,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 00:12:03,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 00:12:03,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 00:12:03,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 00:12:03,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 00:12:03,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 00:12:03,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 00:12:03,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 00:12:03,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 00:12:03,014 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 00:12:03,055 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 00:12:03,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 00:12:03,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 00:12:03,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 00:12:03,057 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 00:12:03,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 00:12:03,058 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 00:12:03,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 00:12:03,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 00:12:03,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 00:12:03,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 00:12:03,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 00:12:03,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 00:12:03,059 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 00:12:03,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 00:12:03,059 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 00:12:03,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 00:12:03,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 00:12:03,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 00:12:03,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 00:12:03,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 00:12:03,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 00:12:03,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 00:12:03,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 00:12:03,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 00:12:03,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 00:12:03,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 00:12:03,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 00:12:03,062 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 00:12:03,062 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 00:12:03,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 00:12:03,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 00:12:03,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 00:12:03,464 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 00:12:03,467 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 00:12:03,468 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2020-10-14 00:12:03,548 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b07f2b73/ff679df2f5e34deea09116d599a24f36/FLAGb622d0a09 [2020-10-14 00:12:03,988 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 00:12:03,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2020-10-14 00:12:03,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b07f2b73/ff679df2f5e34deea09116d599a24f36/FLAGb622d0a09 [2020-10-14 00:12:04,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b07f2b73/ff679df2f5e34deea09116d599a24f36 [2020-10-14 00:12:04,376 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 00:12:04,378 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 00:12:04,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 00:12:04,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 00:12:04,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 00:12:04,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:12:04" (1/1) ... [2020-10-14 00:12:04,388 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e979d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:04, skipping insertion in model container [2020-10-14 00:12:04,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:12:04" (1/1) ... [2020-10-14 00:12:04,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 00:12:04,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 00:12:04,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:12:04,632 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 00:12:04,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 00:12:04,695 INFO L208 MainTranslator]: Completed translation [2020-10-14 00:12:04,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:04 WrapperNode [2020-10-14 00:12:04,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 00:12:04,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 00:12:04,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 00:12:04,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 00:12:04,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:04" (1/1) ... [2020-10-14 00:12:04,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:04" (1/1) ... [2020-10-14 00:12:04,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:04" (1/1) ... [2020-10-14 00:12:04,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:04" (1/1) ... [2020-10-14 00:12:04,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:04" (1/1) ... [2020-10-14 00:12:04,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:04" (1/1) ... [2020-10-14 00:12:04,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:04" (1/1) ... [2020-10-14 00:12:04,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 00:12:04,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 00:12:04,822 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 00:12:04,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 00:12:04,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:04" (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 00:12:04,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 00:12:04,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 00:12:04,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 00:12:04,884 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 00:12:04,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 00:12:04,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 00:12:04,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 00:12:04,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 00:12:04,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 00:12:04,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 00:12:05,155 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 00:12:05,155 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 00:12:05,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:12:05 BoogieIcfgContainer [2020-10-14 00:12:05,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 00:12:05,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 00:12:05,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 00:12:05,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 00:12:05,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:12:04" (1/3) ... [2020-10-14 00:12:05,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a46ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:12:05, skipping insertion in model container [2020-10-14 00:12:05,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:12:04" (2/3) ... [2020-10-14 00:12:05,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a46ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:12:05, skipping insertion in model container [2020-10-14 00:12:05,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:12:05" (3/3) ... [2020-10-14 00:12:05,169 INFO L109 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2020-10-14 00:12:05,181 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 00:12:05,199 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 00:12:05,248 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 00:12:05,302 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 00:12:05,302 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 00:12:05,302 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 00:12:05,303 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 00:12:05,303 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 00:12:05,303 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 00:12:05,303 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 00:12:05,303 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 00:12:05,326 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-14 00:12:05,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 00:12:05,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:05,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:05,334 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:05,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:05,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1906239810, now seen corresponding path program 1 times [2020-10-14 00:12:05,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:05,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956116543] [2020-10-14 00:12:05,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:05,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:05,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:05,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:12:05,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:05,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-14 00:12:05,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:05,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:05,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:05,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 00:12:05,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 00:12:05,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:05,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:05,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:05,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:12:05,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:05,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:12:05,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:05,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:05,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:05,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:05,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:05,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:12:05,548 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 00:12:05,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956116543] [2020-10-14 00:12:05,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:12:05,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-14 00:12:05,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141916598] [2020-10-14 00:12:05,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-14 00:12:05,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:05,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-14 00:12:05,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-14 00:12:05,576 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-10-14 00:12:05,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:05,597 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2020-10-14 00:12:05,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-14 00:12:05,599 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-14 00:12:05,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:05,608 INFO L225 Difference]: With dead ends: 38 [2020-10-14 00:12:05,608 INFO L226 Difference]: Without dead ends: 21 [2020-10-14 00:12:05,612 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 00:12:05,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-14 00:12:05,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-14 00:12:05,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-14 00:12:05,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2020-10-14 00:12:05,656 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 10 [2020-10-14 00:12:05,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:05,657 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 31 transitions. [2020-10-14 00:12:05,657 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-14 00:12:05,657 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 31 transitions. [2020-10-14 00:12:05,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 00:12:05,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:05,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:05,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 00:12:05,659 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:05,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:05,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1847134466, now seen corresponding path program 1 times [2020-10-14 00:12:05,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:05,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [877504675] [2020-10-14 00:12:05,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:05,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:05,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:05,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 00:12:05,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:05,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 00:12:05,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:05,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:05,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:05,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 00:12:05,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 00:12:05,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:12:05,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:05,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:05,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:05,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:12:05,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:05,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:12:05,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:05,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:05,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:05,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:05,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:05,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:12:05,885 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 00:12:05,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [877504675] [2020-10-14 00:12:05,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:12:05,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:12:05,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112122184] [2020-10-14 00:12:05,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:12:05,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:05,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:12:05,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:12:05,890 INFO L87 Difference]: Start difference. First operand 21 states and 31 transitions. Second operand 3 states. [2020-10-14 00:12:05,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:05,974 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2020-10-14 00:12:05,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:12:05,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-14 00:12:05,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:05,978 INFO L225 Difference]: With dead ends: 28 [2020-10-14 00:12:05,978 INFO L226 Difference]: Without dead ends: 23 [2020-10-14 00:12:05,979 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:12:05,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-14 00:12:05,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-10-14 00:12:05,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-14 00:12:05,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 32 transitions. [2020-10-14 00:12:05,987 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 32 transitions. Word has length 10 [2020-10-14 00:12:05,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:05,988 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 32 transitions. [2020-10-14 00:12:05,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:12:05,988 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 32 transitions. [2020-10-14 00:12:05,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 00:12:05,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:05,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:05,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 00:12:05,990 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:05,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:05,990 INFO L82 PathProgramCache]: Analyzing trace with hash -129940435, now seen corresponding path program 1 times [2020-10-14 00:12:05,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:05,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086522791] [2020-10-14 00:12:05,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:06,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:06,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:06,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:06,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:06,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:06,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:06,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:06,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:06,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:06,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 00:12:06,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:12:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 735 [2020-10-14 00:12:06,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:06,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:06,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:12:06,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 00:12:06,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:12:06,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:06,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:06,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:06,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:12:06,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:06,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 00:12:06,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:06,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:06,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:06,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:06,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:06,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:12:06,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:12:06,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086522791] [2020-10-14 00:12:06,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:12:06,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:12:06,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876428326] [2020-10-14 00:12:06,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:12:06,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:06,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:12:06,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:12:06,930 INFO L87 Difference]: Start difference. First operand 22 states and 32 transitions. Second operand 3 states. [2020-10-14 00:12:07,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:07,086 INFO L93 Difference]: Finished difference Result 50 states and 81 transitions. [2020-10-14 00:12:07,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:12:07,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-14 00:12:07,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:07,090 INFO L225 Difference]: With dead ends: 50 [2020-10-14 00:12:07,090 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 00:12:07,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:12:07,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 00:12:07,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-14 00:12:07,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 00:12:07,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2020-10-14 00:12:07,109 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 21 [2020-10-14 00:12:07,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:07,110 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2020-10-14 00:12:07,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:12:07,110 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2020-10-14 00:12:07,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 00:12:07,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:07,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:07,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 00:12:07,112 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:07,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:07,113 INFO L82 PathProgramCache]: Analyzing trace with hash 263086575, now seen corresponding path program 1 times [2020-10-14 00:12:07,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:07,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343595125] [2020-10-14 00:12:07,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:07,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:07,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:07,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 00:12:07,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:07,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-14 00:12:07,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:07,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 00:12:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-14 00:12:07,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 00:12:07,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:12:07,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:07,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:07,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:07,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:12:07,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:07,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 00:12:07,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:07,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:07,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:07,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 00:12:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:12:07,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343595125] [2020-10-14 00:12:07,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 00:12:07,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 00:12:07,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327060850] [2020-10-14 00:12:07,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 00:12:07,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:07,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 00:12:07,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:12:07,746 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 13 states. [2020-10-14 00:12:07,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:07,981 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2020-10-14 00:12:07,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 00:12:07,982 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2020-10-14 00:12:07,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:07,983 INFO L225 Difference]: With dead ends: 51 [2020-10-14 00:12:07,983 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 00:12:07,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-14 00:12:07,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 00:12:07,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-10-14 00:12:07,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 00:12:07,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2020-10-14 00:12:07,992 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 21 [2020-10-14 00:12:07,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:07,992 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2020-10-14 00:12:07,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 00:12:07,993 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2020-10-14 00:12:07,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 00:12:07,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:07,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:07,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 00:12:07,994 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:07,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:07,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1016777103, now seen corresponding path program 1 times [2020-10-14 00:12:07,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:07,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73054730] [2020-10-14 00:12:07,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:08,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:08,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:08,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:08,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:08,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:08,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:08,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:08,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:08,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:08,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:08,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 00:12:08,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 00:12:08,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-14 00:12:08,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:08,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:08,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 00:12:08,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 00:12:08,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 00:12:08,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 00:12:08,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 00:12:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 00:12:08,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 00:12:08,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 00:12:08,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 00:12:08,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 00:12:08,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 00:12:08,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 00:12:08,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 00:12:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 00:12:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 00:12:08,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 00:12:08,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 00:12:08,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 00:12:08,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73054730] [2020-10-14 00:12:08,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 00:12:08,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 00:12:08,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159490910] [2020-10-14 00:12:08,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 00:12:08,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 00:12:08,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 00:12:08,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:12:08,394 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand 3 states. [2020-10-14 00:12:08,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 00:12:08,464 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-10-14 00:12:08,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 00:12:08,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-14 00:12:08,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 00:12:08,466 INFO L225 Difference]: With dead ends: 61 [2020-10-14 00:12:08,466 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 00:12:08,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 00:12:08,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 00:12:08,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2020-10-14 00:12:08,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 00:12:08,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-10-14 00:12:08,474 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 21 [2020-10-14 00:12:08,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 00:12:08,475 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-10-14 00:12:08,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 00:12:08,475 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-10-14 00:12:08,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-14 00:12:08,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 00:12:08,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 00:12:08,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 00:12:08,476 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 00:12:08,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 00:12:08,477 INFO L82 PathProgramCache]: Analyzing trace with hash -345519953, now seen corresponding path program 1 times [2020-10-14 00:12:08,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 00:12:08,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611309509] [2020-10-14 00:12:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 00:12:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 00:12:08,491 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 00:12:08,492 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 00:12:08,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 00:12:08,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 12:12:08 BoogieIcfgContainer [2020-10-14 00:12:08,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 00:12:08,516 INFO L168 Benchmark]: Toolchain (without parser) took 4137.03 ms. Allocated memory was 143.7 MB in the beginning and 247.5 MB in the end (delta: 103.8 MB). Free memory was 102.3 MB in the beginning and 127.0 MB in the end (delta: -24.7 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. [2020-10-14 00:12:08,517 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-14 00:12:08,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.37 ms. Allocated memory is still 143.7 MB. Free memory was 102.1 MB in the beginning and 91.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-10-14 00:12:08,519 INFO L168 Benchmark]: Boogie Preprocessor took 123.97 ms. Allocated memory was 143.7 MB in the beginning and 201.9 MB in the end (delta: 58.2 MB). Free memory was 91.9 MB in the beginning and 180.2 MB in the end (delta: -88.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-10-14 00:12:08,520 INFO L168 Benchmark]: RCFGBuilder took 338.04 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 163.9 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2020-10-14 00:12:08,520 INFO L168 Benchmark]: TraceAbstraction took 3351.96 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 163.3 MB in the beginning and 127.0 MB in the end (delta: 36.3 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. [2020-10-14 00:12:08,524 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 317.37 ms. Allocated memory is still 143.7 MB. Free memory was 102.1 MB in the beginning and 91.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.97 ms. Allocated memory was 143.7 MB in the beginning and 201.9 MB in the end (delta: 58.2 MB). Free memory was 91.9 MB in the beginning and 180.2 MB in the end (delta: -88.4 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 338.04 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 163.9 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3351.96 ms. Allocated memory was 201.9 MB in the beginning and 247.5 MB in the end (delta: 45.6 MB). Free memory was 163.3 MB in the beginning and 127.0 MB in the end (delta: 36.3 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int x = 0; [L13] unsigned int y = __VERIFIER_nondet_uint(); [L15] COND TRUE x < 99 [L16] COND FALSE !(y % 2 == 0) [L17] x += 2 [L19] COND FALSE !(y % 2 == 0) [L20] x -= 2 [L22] COND FALSE !(y % 2 == 0) [L23] x += 2 [L25] COND FALSE !(y % 2 == 0) [L26] x -= 2 [L28] COND FALSE !(y % 2 == 0) [L29] x += 2 [L31] COND FALSE !(y % 2 == 0) [L32] x -= 4 [L34] COND FALSE !(y % 2 == 0) [L35] x += 4 [L37] COND FALSE !(y % 2 == 0) [L38] x += 2 [L40] COND FALSE !(y % 2 == 0) [L41] x -= 4 [L43] COND FALSE !(y % 2 == 0) [L44] x -= 4 [L15] COND FALSE !(x < 99) [L47] CALL __VERIFIER_assert((x % 2) == (y % 2)) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 129 SDtfs, 21 SDslu, 52 SDs, 0 SdLazy, 244 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=4, 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, 5 MinimizatonAttempts, 5 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 6776 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...