/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 SingleStatement --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=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:03:32,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:03:32,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:03:32,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:03:32,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:03:32,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:03:32,250 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:03:32,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:03:32,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:03:32,263 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:03:32,264 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:03:32,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:03:32,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:03:32,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:03:32,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:03:32,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:03:32,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:03:32,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:03:32,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:03:32,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:03:32,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:03:32,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:03:32,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:03:32,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:03:32,283 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:03:32,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:03:32,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:03:32,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:03:32,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:03:32,286 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:03:32,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:03:32,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:03:32,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:03:32,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:03:32,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:03:32,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:03:32,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:03:32,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:03:32,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:03:32,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:03:32,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:03:32,294 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 [2020-09-25 10:03:32,320 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:03:32,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:03:32,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:03:32,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:03:32,323 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:03:32,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:03:32,323 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:03:32,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:03:32,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:03:32,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:03:32,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:03:32,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:03:32,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:03:32,324 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:03:32,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:03:32,325 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:03:32,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:03:32,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:03:32,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:03:32,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:03:32,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:03:32,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:03:32,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:03:32,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:03:32,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:03:32,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:03:32,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:03:32,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:03:32,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:03:32,328 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 -> SingleStatement 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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=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=0.1;log-additional-information=true; [2020-09-25 10:03:32,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:03:32,814 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:03:32,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:03:32,824 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:03:32,824 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:03:32,825 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2020-09-25 10:03:32,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65f9036b7/5dfb62c9e4fe4d0d9b452be980d5b212/FLAG2883df8fc [2020-09-25 10:03:33,465 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:03:33,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_5.c [2020-09-25 10:03:33,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65f9036b7/5dfb62c9e4fe4d0d9b452be980d5b212/FLAG2883df8fc [2020-09-25 10:03:33,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/65f9036b7/5dfb62c9e4fe4d0d9b452be980d5b212 [2020-09-25 10:03:33,826 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:03:33,833 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:03:33,834 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:03:33,834 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:03:33,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:03:33,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:03:33" (1/1) ... [2020-09-25 10:03:33,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66145f2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:33, skipping insertion in model container [2020-09-25 10:03:33,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:03:33" (1/1) ... [2020-09-25 10:03:33,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:03:33,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:03:34,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:03:34,135 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:03:34,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:03:34,173 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:03:34,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:34 WrapperNode [2020-09-25 10:03:34,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:03:34,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:03:34,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:03:34,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:03:34,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:34" (1/1) ... [2020-09-25 10:03:34,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:34" (1/1) ... [2020-09-25 10:03:34,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:34" (1/1) ... [2020-09-25 10:03:34,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:34" (1/1) ... [2020-09-25 10:03:34,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:34" (1/1) ... [2020-09-25 10:03:34,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:34" (1/1) ... [2020-09-25 10:03:34,290 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:34" (1/1) ... [2020-09-25 10:03:34,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:03:34,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:03:34,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:03:34,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:03:34,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:34" (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 [2020-09-25 10:03:34,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:03:34,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:03:34,373 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:03:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:03:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:03:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:03:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:03:34,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:03:34,670 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:03:34,671 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:03:34,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:03:34 BoogieIcfgContainer [2020-09-25 10:03:34,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:03:34,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:03:34,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:03:34,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:03:34,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:03:33" (1/3) ... [2020-09-25 10:03:34,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5375d7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:03:34, skipping insertion in model container [2020-09-25 10:03:34,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:03:34" (2/3) ... [2020-09-25 10:03:34,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5375d7e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:03:34, skipping insertion in model container [2020-09-25 10:03:34,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:03:34" (3/3) ... [2020-09-25 10:03:34,688 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-09-25 10:03:34,701 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:03:34,711 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:03:34,735 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:03:34,769 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:03:34,769 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:03:34,769 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:03:34,769 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:03:34,770 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:03:34,770 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:03:34,770 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:03:34,770 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:03:34,798 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2020-09-25 10:03:34,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 10:03:34,808 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:34,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:03:34,810 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:34,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:34,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1222569836, now seen corresponding path program 1 times [2020-09-25 10:03:34,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:34,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1406327278] [2020-09-25 10:03:34,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:34,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:35,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:35,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 10:03:35,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:35,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 10:03:35,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:35,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 10:03:35,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:03:35,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:03:35,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:35,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:35,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:35,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:35,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:35,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:03:35,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:35,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:35,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:35,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:35,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:03:35,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1406327278] [2020-09-25 10:03:35,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:35,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:03:35,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93691902] [2020-09-25 10:03:35,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:03:35,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:35,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:03:35,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:03:35,267 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 3 states. [2020-09-25 10:03:35,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:35,338 INFO L93 Difference]: Finished difference Result 147 states and 198 transitions. [2020-09-25 10:03:35,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:03:35,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2020-09-25 10:03:35,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:35,358 INFO L225 Difference]: With dead ends: 147 [2020-09-25 10:03:35,358 INFO L226 Difference]: Without dead ends: 96 [2020-09-25 10:03:35,363 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 [2020-09-25 10:03:35,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-25 10:03:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2020-09-25 10:03:35,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 10:03:35,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 120 transitions. [2020-09-25 10:03:35,430 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 120 transitions. Word has length 43 [2020-09-25 10:03:35,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:35,430 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 120 transitions. [2020-09-25 10:03:35,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:03:35,431 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 120 transitions. [2020-09-25 10:03:35,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 10:03:35,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:35,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:03:35,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:03:35,434 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:35,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:35,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1252462105, now seen corresponding path program 1 times [2020-09-25 10:03:35,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:35,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538720095] [2020-09-25 10:03:35,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:35,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:35,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:35,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:03:35,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:35,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 10:03:35,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:35,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:35,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 10:03:35,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:03:35,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:35,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:35,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:35,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:35,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:35,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:35,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:03:35,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:35,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:35,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:35,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:35,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:35,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:03:35,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:03:35,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538720095] [2020-09-25 10:03:35,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:35,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:03:35,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374717604] [2020-09-25 10:03:35,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:03:35,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:35,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:03:35,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:03:35,633 INFO L87 Difference]: Start difference. First operand 94 states and 120 transitions. Second operand 3 states. [2020-09-25 10:03:35,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:35,670 INFO L93 Difference]: Finished difference Result 116 states and 148 transitions. [2020-09-25 10:03:35,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:03:35,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-09-25 10:03:35,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:35,674 INFO L225 Difference]: With dead ends: 116 [2020-09-25 10:03:35,674 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 10:03:35,675 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 [2020-09-25 10:03:35,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 10:03:35,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 94. [2020-09-25 10:03:35,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-25 10:03:35,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 119 transitions. [2020-09-25 10:03:35,688 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 119 transitions. Word has length 44 [2020-09-25 10:03:35,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:35,689 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 119 transitions. [2020-09-25 10:03:35,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:03:35,689 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 119 transitions. [2020-09-25 10:03:35,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 10:03:35,691 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:35,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:03:35,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:03:35,692 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:35,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:35,692 INFO L82 PathProgramCache]: Analyzing trace with hash 755286414, now seen corresponding path program 1 times [2020-09-25 10:03:35,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:35,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975610299] [2020-09-25 10:03:35,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:35,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:35,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:35,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 10:03:35,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:35,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 10:03:35,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:35,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:35,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:35,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 10:03:35,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:03:35,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:35,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:35,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:35,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:35,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:35,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:35,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:03:35,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:35,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:35,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:35,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:03:35,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:03:35,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975610299] [2020-09-25 10:03:35,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:35,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:03:35,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604637952] [2020-09-25 10:03:35,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:03:35,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:35,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:03:35,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:03:35,850 INFO L87 Difference]: Start difference. First operand 94 states and 119 transitions. Second operand 3 states. [2020-09-25 10:03:35,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:35,915 INFO L93 Difference]: Finished difference Result 226 states and 299 transitions. [2020-09-25 10:03:35,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:03:35,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-09-25 10:03:35,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:35,920 INFO L225 Difference]: With dead ends: 226 [2020-09-25 10:03:35,920 INFO L226 Difference]: Without dead ends: 157 [2020-09-25 10:03:35,921 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 [2020-09-25 10:03:35,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-09-25 10:03:35,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 155. [2020-09-25 10:03:35,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-25 10:03:35,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 200 transitions. [2020-09-25 10:03:35,937 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 200 transitions. Word has length 44 [2020-09-25 10:03:35,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:35,938 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 200 transitions. [2020-09-25 10:03:35,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:03:35,938 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 200 transitions. [2020-09-25 10:03:35,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 10:03:35,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:35,941 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:03:35,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:03:35,941 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:35,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:35,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1863120818, now seen corresponding path program 1 times [2020-09-25 10:03:35,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:35,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035520874] [2020-09-25 10:03:35,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:35,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:36,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:36,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 10:03:36,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:36,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 10:03:36,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:36,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:36,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 10:03:36,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:03:36,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:03:36,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:36,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:36,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:36,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:36,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:36,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:36,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:03:36,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:36,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:36,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:03:36,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035520874] [2020-09-25 10:03:36,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:36,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:03:36,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553974943] [2020-09-25 10:03:36,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:03:36,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:36,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:03:36,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:03:36,076 INFO L87 Difference]: Start difference. First operand 155 states and 200 transitions. Second operand 3 states. [2020-09-25 10:03:36,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:36,111 INFO L93 Difference]: Finished difference Result 191 states and 246 transitions. [2020-09-25 10:03:36,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:03:36,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-09-25 10:03:36,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:36,116 INFO L225 Difference]: With dead ends: 191 [2020-09-25 10:03:36,116 INFO L226 Difference]: Without dead ends: 189 [2020-09-25 10:03:36,117 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 [2020-09-25 10:03:36,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-25 10:03:36,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 155. [2020-09-25 10:03:36,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-25 10:03:36,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 198 transitions. [2020-09-25 10:03:36,136 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 198 transitions. Word has length 45 [2020-09-25 10:03:36,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:36,137 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 198 transitions. [2020-09-25 10:03:36,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:03:36,137 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 198 transitions. [2020-09-25 10:03:36,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 10:03:36,139 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:36,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:03:36,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:03:36,140 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:36,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:36,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1939288392, now seen corresponding path program 1 times [2020-09-25 10:03:36,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:36,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019320912] [2020-09-25 10:03:36,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:36,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:36,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:36,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 10:03:36,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:36,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 10:03:36,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:36,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:36,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:36,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 10:03:36,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:03:36,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:36,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:36,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:36,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:36,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:36,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:36,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:03:36,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:36,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:36,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:36,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:36,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:36,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:36,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:03:36,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019320912] [2020-09-25 10:03:36,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:36,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:03:36,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143073264] [2020-09-25 10:03:36,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:03:36,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:36,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:03:36,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:03:36,273 INFO L87 Difference]: Start difference. First operand 155 states and 198 transitions. Second operand 3 states. [2020-09-25 10:03:36,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:36,302 INFO L93 Difference]: Finished difference Result 403 states and 528 transitions. [2020-09-25 10:03:36,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:03:36,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-09-25 10:03:36,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:36,307 INFO L225 Difference]: With dead ends: 403 [2020-09-25 10:03:36,307 INFO L226 Difference]: Without dead ends: 273 [2020-09-25 10:03:36,308 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 [2020-09-25 10:03:36,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-09-25 10:03:36,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 271. [2020-09-25 10:03:36,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-09-25 10:03:36,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 346 transitions. [2020-09-25 10:03:36,347 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 346 transitions. Word has length 45 [2020-09-25 10:03:36,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:36,348 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 346 transitions. [2020-09-25 10:03:36,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:03:36,351 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 346 transitions. [2020-09-25 10:03:36,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 10:03:36,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:36,353 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, 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] [2020-09-25 10:03:36,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:03:36,356 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:36,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:36,356 INFO L82 PathProgramCache]: Analyzing trace with hash -11355582, now seen corresponding path program 1 times [2020-09-25 10:03:36,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:36,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960542424] [2020-09-25 10:03:36,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:36,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:36,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:36,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 10:03:36,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:36,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 10:03:36,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:36,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:36,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:36,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 10:03:36,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:03:36,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:36,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:36,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:36,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:36,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:36,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:36,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:03:36,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:36,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:36,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:36,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:36,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:36,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:36,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:03:36,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960542424] [2020-09-25 10:03:36,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:36,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:03:36,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142982551] [2020-09-25 10:03:36,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:03:36,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:36,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:03:36,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:03:36,479 INFO L87 Difference]: Start difference. First operand 271 states and 346 transitions. Second operand 3 states. [2020-09-25 10:03:36,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:36,531 INFO L93 Difference]: Finished difference Result 739 states and 956 transitions. [2020-09-25 10:03:36,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:03:36,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-25 10:03:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:36,535 INFO L225 Difference]: With dead ends: 739 [2020-09-25 10:03:36,536 INFO L226 Difference]: Without dead ends: 493 [2020-09-25 10:03:36,542 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 [2020-09-25 10:03:36,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-09-25 10:03:36,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 491. [2020-09-25 10:03:36,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-09-25 10:03:36,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 618 transitions. [2020-09-25 10:03:36,579 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 618 transitions. Word has length 46 [2020-09-25 10:03:36,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:36,580 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 618 transitions. [2020-09-25 10:03:36,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:03:36,580 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 618 transitions. [2020-09-25 10:03:36,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 10:03:36,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:36,592 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, 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] [2020-09-25 10:03:36,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:03:36,594 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:36,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:36,594 INFO L82 PathProgramCache]: Analyzing trace with hash 338056749, now seen corresponding path program 1 times [2020-09-25 10:03:36,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:36,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913135261] [2020-09-25 10:03:36,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:36,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:36,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:36,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 10:03:36,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:36,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 10:03:36,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:36,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:36,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:36,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 10:03:36,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:03:36,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:03:36,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:36,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:36,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:36,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:36,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:36,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:03:36,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:36,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:36,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:36,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:36,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:36,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:03:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:03:36,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1913135261] [2020-09-25 10:03:36,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:36,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:03:36,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408347986] [2020-09-25 10:03:36,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:03:36,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:36,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:03:36,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:03:36,695 INFO L87 Difference]: Start difference. First operand 491 states and 618 transitions. Second operand 3 states. [2020-09-25 10:03:36,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:36,716 INFO L93 Difference]: Finished difference Result 599 states and 748 transitions. [2020-09-25 10:03:36,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:03:36,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-09-25 10:03:36,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:36,720 INFO L225 Difference]: With dead ends: 599 [2020-09-25 10:03:36,721 INFO L226 Difference]: Without dead ends: 597 [2020-09-25 10:03:36,721 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 [2020-09-25 10:03:36,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-09-25 10:03:36,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 491. [2020-09-25 10:03:36,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-09-25 10:03:36,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 610 transitions. [2020-09-25 10:03:36,739 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 610 transitions. Word has length 46 [2020-09-25 10:03:36,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:36,740 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 610 transitions. [2020-09-25 10:03:36,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:03:36,740 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 610 transitions. [2020-09-25 10:03:36,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 10:03:36,741 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:36,742 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, 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, 1] [2020-09-25 10:03:36,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:03:36,742 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:36,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:36,743 INFO L82 PathProgramCache]: Analyzing trace with hash -144915038, now seen corresponding path program 1 times [2020-09-25 10:03:36,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:36,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614296786] [2020-09-25 10:03:36,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:36,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:36,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:36,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 10:03:36,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:36,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 10:03:36,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:36,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:36,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:36,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 10:03:36,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:03:36,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:03:36,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:36,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:36,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:36,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:36,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:36,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:03:36,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:36,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:36,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:36,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:36,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:36,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:03:36,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614296786] [2020-09-25 10:03:36,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:36,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:03:36,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921106109] [2020-09-25 10:03:36,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:03:36,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:36,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:03:36,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:03:36,818 INFO L87 Difference]: Start difference. First operand 491 states and 610 transitions. Second operand 3 states. [2020-09-25 10:03:36,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:36,839 INFO L93 Difference]: Finished difference Result 591 states and 724 transitions. [2020-09-25 10:03:36,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:03:36,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-09-25 10:03:36,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:36,843 INFO L225 Difference]: With dead ends: 591 [2020-09-25 10:03:36,843 INFO L226 Difference]: Without dead ends: 589 [2020-09-25 10:03:36,844 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 [2020-09-25 10:03:36,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-09-25 10:03:36,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 491. [2020-09-25 10:03:36,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-09-25 10:03:36,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 602 transitions. [2020-09-25 10:03:36,865 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 602 transitions. Word has length 47 [2020-09-25 10:03:36,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:36,865 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 602 transitions. [2020-09-25 10:03:36,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:03:36,866 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 602 transitions. [2020-09-25 10:03:36,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 10:03:36,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:36,868 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, 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, 1] [2020-09-25 10:03:36,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:03:36,869 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:36,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:36,869 INFO L82 PathProgramCache]: Analyzing trace with hash -351776260, now seen corresponding path program 1 times [2020-09-25 10:03:36,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:36,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795665055] [2020-09-25 10:03:36,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:36,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:36,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:36,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 10:03:36,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:36,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 10:03:36,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:36,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 10:03:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 10:03:36,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:36,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:36,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:36,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:36,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:36,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:36,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:03:36,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:36,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:36,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:36,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:36,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:03:36,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795665055] [2020-09-25 10:03:36,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:36,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:03:36,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392461574] [2020-09-25 10:03:36,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:03:36,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:36,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:03:36,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:03:36,968 INFO L87 Difference]: Start difference. First operand 491 states and 602 transitions. Second operand 3 states. [2020-09-25 10:03:37,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:37,007 INFO L93 Difference]: Finished difference Result 1373 states and 1691 transitions. [2020-09-25 10:03:37,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:03:37,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-09-25 10:03:37,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:37,011 INFO L225 Difference]: With dead ends: 1373 [2020-09-25 10:03:37,012 INFO L226 Difference]: Without dead ends: 491 [2020-09-25 10:03:37,014 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 [2020-09-25 10:03:37,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-09-25 10:03:37,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2020-09-25 10:03:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-09-25 10:03:37,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 570 transitions. [2020-09-25 10:03:37,031 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 570 transitions. Word has length 47 [2020-09-25 10:03:37,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:37,032 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 570 transitions. [2020-09-25 10:03:37,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:03:37,032 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 570 transitions. [2020-09-25 10:03:37,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 10:03:37,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:03:37,034 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, 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, 1, 1] [2020-09-25 10:03:37,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 10:03:37,034 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:03:37,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:03:37,035 INFO L82 PathProgramCache]: Analyzing trace with hash 2062829121, now seen corresponding path program 1 times [2020-09-25 10:03:37,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:03:37,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934139406] [2020-09-25 10:03:37,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:03:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:37,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:37,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:37,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 10:03:37,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:37,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 10:03:37,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:37,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:37,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:03:37,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 10:03:37,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:03:37,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:37,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:03:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:03:37,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:03:37,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:03:37,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:03:37,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:03:37,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 10:03:37,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:03:37,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:03:37,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:03:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:03:37,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:03:37,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:03:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:03:37,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934139406] [2020-09-25 10:03:37,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:03:37,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 10:03:37,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123139609] [2020-09-25 10:03:37,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 10:03:37,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:03:37,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 10:03:37,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 10:03:37,164 INFO L87 Difference]: Start difference. First operand 491 states and 570 transitions. Second operand 3 states. [2020-09-25 10:03:37,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:03:37,179 INFO L93 Difference]: Finished difference Result 491 states and 570 transitions. [2020-09-25 10:03:37,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 10:03:37,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-09-25 10:03:37,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:03:37,180 INFO L225 Difference]: With dead ends: 491 [2020-09-25 10:03:37,180 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:03:37,181 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 [2020-09-25 10:03:37,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:03:37,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:03:37,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:03:37,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:03:37,182 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-09-25 10:03:37,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:03:37,183 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:03:37,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 10:03:37,183 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:03:37,183 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:03:37,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 10:03:37,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:03:37,216 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 10:03:37,217 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:03:37,217 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:03:37,217 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 10:03:37,217 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 10:03:37,217 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:03:37,217 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 93) no Hoare annotation was computed. [2020-09-25 10:03:37,218 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-09-25 10:03:37,218 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-25 10:03:37,218 INFO L268 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-09-25 10:03:37,218 INFO L268 CegarLoopResult]: For program point L53-1(lines 24 88) no Hoare annotation was computed. [2020-09-25 10:03:37,218 INFO L268 CegarLoopResult]: For program point L78-1(lines 24 88) no Hoare annotation was computed. [2020-09-25 10:03:37,218 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 10:03:37,218 INFO L268 CegarLoopResult]: For program point L45-1(lines 24 88) no Hoare annotation was computed. [2020-09-25 10:03:37,218 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 10:03:37,219 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 10:03:37,219 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-09-25 10:03:37,219 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-25 10:03:37,219 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 10:03:37,219 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-09-25 10:03:37,219 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-09-25 10:03:37,220 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-25 10:03:37,220 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 10:03:37,220 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 93) no Hoare annotation was computed. [2020-09-25 10:03:37,220 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-09-25 10:03:37,220 INFO L268 CegarLoopResult]: For program point L63-1(lines 24 88) no Hoare annotation was computed. [2020-09-25 10:03:37,220 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 93) the Hoare annotation is: true [2020-09-25 10:03:37,221 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 10:03:37,221 INFO L268 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-09-25 10:03:37,221 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 10:03:37,221 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 10:03:37,221 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-09-25 10:03:37,221 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 10:03:37,221 INFO L271 CegarLoopResult]: At program point L89(lines 5 93) the Hoare annotation is: true [2020-09-25 10:03:37,222 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 10:03:37,222 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 10:03:37,222 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 10:03:37,222 INFO L268 CegarLoopResult]: For program point L73-1(lines 24 88) no Hoare annotation was computed. [2020-09-25 10:03:37,222 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 10:03:37,222 INFO L268 CegarLoopResult]: For program point L65(line 65) no Hoare annotation was computed. [2020-09-25 10:03:37,222 INFO L268 CegarLoopResult]: For program point L57-1(lines 24 88) no Hoare annotation was computed. [2020-09-25 10:03:37,222 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 10:03:37,223 INFO L268 CegarLoopResult]: For program point L49-1(lines 24 88) no Hoare annotation was computed. [2020-09-25 10:03:37,223 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-25 10:03:37,223 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-09-25 10:03:37,223 INFO L268 CegarLoopResult]: For program point L41-2(lines 24 88) no Hoare annotation was computed. [2020-09-25 10:03:37,223 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 10:03:37,223 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-09-25 10:03:37,223 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 10:03:37,224 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-25 10:03:37,224 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-25 10:03:37,224 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-09-25 10:03:37,224 INFO L271 CegarLoopResult]: At program point L83-1(lines 24 88) the Hoare annotation is: true [2020-09-25 10:03:37,224 INFO L268 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-09-25 10:03:37,224 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-25 10:03:37,224 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-25 10:03:37,225 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-25 10:03:37,225 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-25 10:03:37,225 INFO L268 CegarLoopResult]: For program point L92(line 92) no Hoare annotation was computed. [2020-09-25 10:03:37,225 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-09-25 10:03:37,225 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-09-25 10:03:37,225 INFO L264 CegarLoopResult]: At program point L84-1(lines 5 93) the Hoare annotation is: false [2020-09-25 10:03:37,226 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 10:03:37,226 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 10:03:37,226 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 10:03:37,226 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 10:03:37,226 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-25 10:03:37,226 INFO L268 CegarLoopResult]: For program point L68-1(lines 24 88) no Hoare annotation was computed. [2020-09-25 10:03:37,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:03:37 BoogieIcfgContainer [2020-09-25 10:03:37,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:03:37,245 INFO L168 Benchmark]: Toolchain (without parser) took 3415.13 ms. Allocated memory was 138.9 MB in the beginning and 248.0 MB in the end (delta: 109.1 MB). Free memory was 101.4 MB in the beginning and 208.2 MB in the end (delta: -106.8 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-09-25 10:03:37,246 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 10:03:37,246 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.13 ms. Allocated memory is still 138.9 MB. Free memory was 100.8 MB in the beginning and 90.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 10:03:37,247 INFO L168 Benchmark]: Boogie Preprocessor took 118.51 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 90.5 MB in the beginning and 180.3 MB in the end (delta: -89.8 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-25 10:03:37,248 INFO L168 Benchmark]: RCFGBuilder took 384.60 ms. Allocated memory is still 201.3 MB. Free memory was 180.3 MB in the beginning and 162.4 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-09-25 10:03:37,249 INFO L168 Benchmark]: TraceAbstraction took 2562.16 ms. Allocated memory was 201.3 MB in the beginning and 248.0 MB in the end (delta: 46.7 MB). Free memory was 161.7 MB in the beginning and 208.2 MB in the end (delta: -46.5 MB). Peak memory consumption was 160.6 kB. Max. memory is 7.1 GB. [2020-09-25 10:03:37,252 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 340.13 ms. Allocated memory is still 138.9 MB. Free memory was 100.8 MB in the beginning and 90.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.51 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 90.5 MB in the beginning and 180.3 MB in the end (delta: -89.8 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 384.60 ms. Allocated memory is still 201.3 MB. Free memory was 180.3 MB in the beginning and 162.4 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2562.16 ms. Allocated memory was 201.3 MB in the beginning and 248.0 MB in the end (delta: 46.7 MB). Free memory was 161.7 MB in the beginning and 208.2 MB in the end (delta: -46.5 MB). Peak memory consumption was 160.6 kB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 956 SDtfs, 332 SDslu, 668 SDs, 0 SdLazy, 49 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=491occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 266 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 41 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 455 NumberOfCodeBlocks, 455 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 445 ConstructedInterpolants, 0 QuantifiedInterpolants, 24725 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...