/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-crafted/xor5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 17:39:43,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 17:39:43,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 17:39:43,446 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 17:39:43,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 17:39:43,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 17:39:43,449 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 17:39:43,451 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 17:39:43,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 17:39:43,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 17:39:43,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 17:39:43,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 17:39:43,456 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 17:39:43,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 17:39:43,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 17:39:43,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 17:39:43,460 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 17:39:43,461 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 17:39:43,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 17:39:43,464 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 17:39:43,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 17:39:43,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 17:39:43,468 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 17:39:43,469 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 17:39:43,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 17:39:43,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 17:39:43,472 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 17:39:43,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 17:39:43,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 17:39:43,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 17:39:43,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 17:39:43,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 17:39:43,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 17:39:43,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 17:39:43,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 17:39:43,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 17:39:43,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 17:39:43,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 17:39:43,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 17:39:43,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 17:39:43,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 17:39:43,485 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 17:39:43,532 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 17:39:43,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 17:39:43,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 17:39:43,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 17:39:43,537 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 17:39:43,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 17:39:43,537 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 17:39:43,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 17:39:43,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 17:39:43,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 17:39:43,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 17:39:43,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 17:39:43,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 17:39:43,539 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 17:39:43,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 17:39:43,539 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 17:39:43,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 17:39:43,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 17:39:43,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 17:39:43,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 17:39:43,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 17:39:43,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 17:39:43,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 17:39:43,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 17:39:43,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 17:39:43,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 17:39:43,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 17:39:43,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 17:39:43,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 17:39:43,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 17:39:43,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 17:39:43,859 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 17:39:43,862 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 17:39:43,864 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 17:39:43,865 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 17:39:43,865 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/xor5.i [2020-10-14 17:39:43,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17ac4a1dc/68b2d8703c2b4b7eafe787d66c3a94ed/FLAGf6468b9f1 [2020-10-14 17:39:44,414 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 17:39:44,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/xor5.i [2020-10-14 17:39:44,424 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17ac4a1dc/68b2d8703c2b4b7eafe787d66c3a94ed/FLAGf6468b9f1 [2020-10-14 17:39:44,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/17ac4a1dc/68b2d8703c2b4b7eafe787d66c3a94ed [2020-10-14 17:39:44,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 17:39:44,794 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 17:39:44,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 17:39:44,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 17:39:44,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 17:39:44,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:39:44" (1/1) ... [2020-10-14 17:39:44,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a7ca91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:44, skipping insertion in model container [2020-10-14 17:39:44,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:39:44" (1/1) ... [2020-10-14 17:39:44,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 17:39:44,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 17:39:45,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:39:45,088 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 17:39:45,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 17:39:45,160 INFO L208 MainTranslator]: Completed translation [2020-10-14 17:39:45,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:45 WrapperNode [2020-10-14 17:39:45,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 17:39:45,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 17:39:45,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 17:39:45,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 17:39:45,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:45" (1/1) ... [2020-10-14 17:39:45,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:45" (1/1) ... [2020-10-14 17:39:45,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:45" (1/1) ... [2020-10-14 17:39:45,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:45" (1/1) ... [2020-10-14 17:39:45,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:45" (1/1) ... [2020-10-14 17:39:45,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:45" (1/1) ... [2020-10-14 17:39:45,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:45" (1/1) ... [2020-10-14 17:39:45,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 17:39:45,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 17:39:45,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 17:39:45,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 17:39:45,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:45" (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 17:39:45,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 17:39:45,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 17:39:45,387 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2020-10-14 17:39:45,387 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 17:39:45,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 17:39:45,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 17:39:45,387 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2020-10-14 17:39:45,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 17:39:45,388 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 17:39:45,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 17:39:45,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 17:39:45,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 17:39:45,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 17:39:45,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 17:39:45,679 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 17:39:45,679 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 17:39:45,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:39:45 BoogieIcfgContainer [2020-10-14 17:39:45,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 17:39:45,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 17:39:45,687 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 17:39:45,691 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 17:39:45,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:39:44" (1/3) ... [2020-10-14 17:39:45,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b833832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:39:45, skipping insertion in model container [2020-10-14 17:39:45,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:39:45" (2/3) ... [2020-10-14 17:39:45,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b833832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:39:45, skipping insertion in model container [2020-10-14 17:39:45,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:39:45" (3/3) ... [2020-10-14 17:39:45,695 INFO L109 eAbstractionObserver]: Analyzing ICFG xor5.i [2020-10-14 17:39:45,708 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 17:39:45,717 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 17:39:45,736 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 17:39:45,763 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 17:39:45,764 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 17:39:45,764 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 17:39:45,764 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 17:39:45,764 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 17:39:45,764 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 17:39:45,765 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 17:39:45,765 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 17:39:45,784 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-14 17:39:45,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 17:39:45,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:45,793 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:45,794 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:45,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:45,800 INFO L82 PathProgramCache]: Analyzing trace with hash 911672298, now seen corresponding path program 1 times [2020-10-14 17:39:45,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:45,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872216691] [2020-10-14 17:39:45,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:45,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:45,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:45,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:46,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:46,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:46,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:46,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:46,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 17:39:46,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:39:46,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 413 [2020-10-14 17:39:46,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:46,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:46,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:46,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 17:39:46,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:46,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 17:39:46,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:46,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:46,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:46,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:46,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:46,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 17:39:46,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:46,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:46,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:46,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:46,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:46,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:46,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 17:39:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:46,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:46,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:46,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:39:46,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:46,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 17:39:46,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:46,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:46,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:46,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 17:39:46,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:46,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:46,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 17:39:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:46,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:46,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:46,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:46,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:39:46,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:46,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 17:39:46,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:46,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-14 17:39:46,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:46,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:46,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 17:39:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:46,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:46,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:46,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:46,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:39:46,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:46,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 17:39:46,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:46,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:46,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 17:39:46,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:46,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:46,526 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 17:39:46,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872216691] [2020-10-14 17:39:46,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:46,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-10-14 17:39:46,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866475775] [2020-10-14 17:39:46,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 17:39:46,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:46,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 17:39:46,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 17:39:46,555 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-10-14 17:39:46,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:46,671 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2020-10-14 17:39:46,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 17:39:46,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-14 17:39:46,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:46,684 INFO L225 Difference]: With dead ends: 57 [2020-10-14 17:39:46,684 INFO L226 Difference]: Without dead ends: 27 [2020-10-14 17:39:46,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 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 17:39:46,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-14 17:39:46,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-14 17:39:46,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-14 17:39:46,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-14 17:39:46,740 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2020-10-14 17:39:46,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:46,741 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-14 17:39:46,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 17:39:46,742 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-14 17:39:46,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 17:39:46,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:46,745 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:46,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 17:39:46,745 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:46,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:46,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1776857700, now seen corresponding path program 1 times [2020-10-14 17:39:46,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:46,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906116008] [2020-10-14 17:39:46,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:46,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:46,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:46,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:46,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:47,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:47,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:47,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 17:39:47,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:39:47,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1155 [2020-10-14 17:39:47,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:47,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:47,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:39:47,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:39:47,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 17:39:47,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:47,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:47,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:47,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:47,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:47,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:47,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:39:47,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:47,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:47,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:47,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:47,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:47,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:47,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 17:39:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:47,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:47,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:47,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:47,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:39:47,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:47,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 17:39:47,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:47,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:47,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:39:47,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:47,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:39:47,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 17:39:48,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:48,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:48,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:48,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:48,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:39:48,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:48,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 17:39:48,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:48,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:48,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:39:48,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:48,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 17:39:48,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:48,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 17:39:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:48,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:48,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:48,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 17:39:48,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:48,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 17:39:48,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:48,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:48,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:39:48,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 17:39:48,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 17:39:48,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:48,076 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 17:39:48,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906116008] [2020-10-14 17:39:48,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:39:48,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 17:39:48,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353497281] [2020-10-14 17:39:48,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 17:39:48,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:48,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 17:39:48,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 17:39:48,081 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 6 states. [2020-10-14 17:39:48,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:48,254 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-10-14 17:39:48,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 17:39:48,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-10-14 17:39:48,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:48,256 INFO L225 Difference]: With dead ends: 46 [2020-10-14 17:39:48,256 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 17:39:48,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 17:39:48,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 17:39:48,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-14 17:39:48,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 17:39:48,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-14 17:39:48,267 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 33 [2020-10-14 17:39:48,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:48,267 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-14 17:39:48,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 17:39:48,267 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-14 17:39:48,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 17:39:48,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:48,269 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:48,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 17:39:48,270 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:48,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:48,270 INFO L82 PathProgramCache]: Analyzing trace with hash -751622334, now seen corresponding path program 1 times [2020-10-14 17:39:48,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:48,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1133613224] [2020-10-14 17:39:48,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:48,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:48,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:48,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:48,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:48,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:49,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:49,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 17:39:49,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 17:39:49,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1171 [2020-10-14 17:39:49,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:49,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:49,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:39:49,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:39:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 17:39:49,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:49,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:49,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:49,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:49,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:49,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:49,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 17:39:49,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:49,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:49,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:49,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:49,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:49,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:49,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 17:39:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:49,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:49,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:49,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:49,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:39:49,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:49,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 17:39:49,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:49,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:49,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:39:49,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:49,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 17:39:49,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:49,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 17:39:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:49,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:49,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:49,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:49,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:39:49,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 17:39:49,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 17:39:49,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:49,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:49,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:39:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:49,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 17:39:49,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:49,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 17:39:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:49,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:49,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:49,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:39:49,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:49,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 17:39:49,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:49,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:49,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:49,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 17:39:49,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:49,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:49,591 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-14 17:39:49,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1133613224] [2020-10-14 17:39:49,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:39:49,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 17:39:49,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374462981] [2020-10-14 17:39:49,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 17:39:49,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:49,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 17:39:49,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:39:49,594 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-10-14 17:39:49,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:49,710 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-10-14 17:39:49,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 17:39:49,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-10-14 17:39:49,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:49,712 INFO L225 Difference]: With dead ends: 42 [2020-10-14 17:39:49,713 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 17:39:49,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 17:39:49,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 17:39:49,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-14 17:39:49,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-14 17:39:49,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-14 17:39:49,721 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 39 [2020-10-14 17:39:49,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:49,723 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-14 17:39:49,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 17:39:49,724 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-14 17:39:49,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 17:39:49,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:49,725 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:49,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 17:39:49,726 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:49,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:49,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1865456992, now seen corresponding path program 1 times [2020-10-14 17:39:49,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:49,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534118240] [2020-10-14 17:39:49,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:49,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:49,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:49,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:49,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 17:39:49,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:49,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 17:39:49,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:49,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:49,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 17:39:49,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:39:49,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 17:39:49,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:49,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:49,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:49,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:49,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:49,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:49,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:39:49,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:49,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:49,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:49,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:49,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:49,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 17:39:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:49,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:49,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:49,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:39:49,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:49,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 17:39:49,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:49,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:49,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:49,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 17:39:49,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:49,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:39:49,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 17:39:49,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:49,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:49,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:49,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:39:49,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:49,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 17:39:49,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:49,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:49,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 17:39:49,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:49,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:49,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 17:39:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:49,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:49,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:49,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:39:49,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:49,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 17:39:49,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:49,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:49,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:49,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 17:39:49,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:49,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-14 17:39:49,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534118240] [2020-10-14 17:39:49,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 17:39:49,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 17:39:49,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500196779] [2020-10-14 17:39:49,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 17:39:49,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:49,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 17:39:49,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 17:39:49,967 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 4 states. [2020-10-14 17:39:50,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:50,065 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-10-14 17:39:50,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 17:39:50,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-14 17:39:50,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:50,067 INFO L225 Difference]: With dead ends: 51 [2020-10-14 17:39:50,067 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 17:39:50,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 17:39:50,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 17:39:50,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-14 17:39:50,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 17:39:50,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-14 17:39:50,084 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 41 [2020-10-14 17:39:50,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:50,084 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-14 17:39:50,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 17:39:50,085 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-14 17:39:50,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 17:39:50,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:50,087 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:50,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 17:39:50,088 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:50,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:50,088 INFO L82 PathProgramCache]: Analyzing trace with hash 891487714, now seen corresponding path program 1 times [2020-10-14 17:39:50,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:50,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [573706855] [2020-10-14 17:39:50,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:50,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:50,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:50,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 17:39:50,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:50,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 17:39:50,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:50,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:50,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 17:39:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 17:39:50,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 17:39:50,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:50,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 17:39:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:50,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:50,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:50,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 17:39:50,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:50,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 17:39:50,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:50,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 17:39:50,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:50,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 17:39:50,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-14 17:39:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:50,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:50,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:50,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:39:50,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:50,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 17:39:50,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:50,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:50,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:50,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 17:39:50,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:50,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:50,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-14 17:39:50,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:50,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:50,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:50,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:39:50,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:50,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 17:39:50,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:50,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:50,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:50,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 17:39:50,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:50,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 17:39:50,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 17:39:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 17:39:50,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 17:39:50,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 17:39:50,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 17:39:50,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 17:39:50,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 17:39:50,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 17:39:50,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 17:39:50,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 17:39:50,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-14 17:39:50,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 17:39:50,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 17:39:50,358 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-14 17:39:50,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [573706855] [2020-10-14 17:39:50,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 17:39:50,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 17:39:50,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787718860] [2020-10-14 17:39:50,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 17:39:50,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 17:39:50,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 17:39:50,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:39:50,363 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-10-14 17:39:50,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 17:39:50,490 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-14 17:39:50,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 17:39:50,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-14 17:39:50,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 17:39:50,491 INFO L225 Difference]: With dead ends: 52 [2020-10-14 17:39:50,492 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 17:39:50,492 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 17:39:50,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 17:39:50,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-14 17:39:50,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 17:39:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-14 17:39:50,499 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 43 [2020-10-14 17:39:50,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 17:39:50,499 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-14 17:39:50,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 17:39:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-14 17:39:50,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 17:39:50,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 17:39:50,501 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 17:39:50,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 17:39:50,501 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 17:39:50,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 17:39:50,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1209882084, now seen corresponding path program 2 times [2020-10-14 17:39:50,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 17:39:50,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [433363761] [2020-10-14 17:39:50,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 17:39:50,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 17:39:50,525 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 17:39:50,526 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 17:39:50,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 17:39:50,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:39:50 BoogieIcfgContainer [2020-10-14 17:39:50,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 17:39:50,554 INFO L168 Benchmark]: Toolchain (without parser) took 5759.51 ms. Allocated memory was 147.3 MB in the beginning and 277.3 MB in the end (delta: 130.0 MB). Free memory was 103.7 MB in the beginning and 230.9 MB in the end (delta: -127.2 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-10-14 17:39:50,555 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 17:39:50,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 367.10 ms. Allocated memory is still 147.3 MB. Free memory was 103.3 MB in the beginning and 90.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-10-14 17:39:50,556 INFO L168 Benchmark]: Boogie Preprocessor took 159.86 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 90.9 MB in the beginning and 181.9 MB in the end (delta: -91.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-10-14 17:39:50,557 INFO L168 Benchmark]: RCFGBuilder took 361.94 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 164.6 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-10-14 17:39:50,558 INFO L168 Benchmark]: TraceAbstraction took 4864.63 ms. Allocated memory was 204.5 MB in the beginning and 277.3 MB in the end (delta: 72.9 MB). Free memory was 163.7 MB in the beginning and 230.9 MB in the end (delta: -67.2 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2020-10-14 17:39:50,562 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 367.10 ms. Allocated memory is still 147.3 MB. Free memory was 103.3 MB in the beginning and 90.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 159.86 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 90.9 MB in the beginning and 181.9 MB in the end (delta: -91.0 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 361.94 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 164.6 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4864.63 ms. Allocated memory was 204.5 MB in the beginning and 277.3 MB in the end (delta: 72.9 MB). Free memory was 163.7 MB in the beginning and 230.9 MB in the end (delta: -67.2 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 46]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseXor at line 14. Possible FailurePath: [L6] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND TRUE N > 1 [L23] int x[N]; [L24] int temp; [L25] int ret; [L26] int ret2; [L27] int ret5; [L29] int i = 0; [L29] COND TRUE i < N [L31] x[i] = __VERIFIER_nondet_int() [L29] i++ [L29] COND TRUE i < N [L31] x[i] = __VERIFIER_nondet_int() [L29] i++ [L29] COND FALSE !(i < N) [L34] CALL, EXPR xor(x) [L10] int i; [L11] long long res; [L12] EXPR x[0] [L12] res = x[0] [L13] i = 1 [L13] COND TRUE i < N [L14] EXPR x[i] [L14] res = res ^ x[i] [L13] i++ [L13] COND FALSE !(i < N) [L16] return res; [L34] RET, EXPR xor(x) [L34] ret = xor(x) [L36] EXPR x[0] [L36] temp=x[0] [L36] EXPR x[1] [L36] x[0] = x[1] [L36] x[1] = temp [L37] CALL, EXPR xor(x) [L10] int i; [L11] long long res; [L12] EXPR x[0] [L12] res = x[0] [L13] i = 1 [L13] COND TRUE i < N [L14] EXPR x[i] [L14] res = res ^ x[i] [L13] i++ [L13] COND FALSE !(i < N) [L16] return res; [L37] RET, EXPR xor(x) [L37] ret2 = xor(x) [L38] EXPR x[0] [L38] temp=x[0] [L39] int i =0 ; [L39] COND TRUE i