/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:44:01,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:44:01,202 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:44:01,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:44:01,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:44:01,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:44:01,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:44:01,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:44:01,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:44:01,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:44:01,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:44:01,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:44:01,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:44:01,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:44:01,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:44:01,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:44:01,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:44:01,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:44:01,274 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:44:01,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:44:01,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:44:01,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:44:01,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:44:01,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:44:01,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:44:01,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:44:01,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:44:01,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:44:01,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:44:01,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:44:01,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:44:01,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:44:01,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:44:01,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:44:01,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:44:01,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:44:01,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:44:01,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:44:01,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:44:01,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:44:01,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:44:01,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:44:01,366 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:44:01,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:44:01,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:44:01,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:44:01,368 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:44:01,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:44:01,368 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:44:01,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:44:01,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:44:01,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:44:01,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:44:01,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:44:01,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:44:01,372 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:44:01,372 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:44:01,372 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:44:01,372 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:44:01,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:44:01,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:44:01,373 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:44:01,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:44:01,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:44:01,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:44:01,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:44:01,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:44:01,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:44:01,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:44:01,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:44:01,375 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:44:01,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:44:01,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:44:01,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:44:01,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:44:01,743 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:44:01,743 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:44:01,744 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2020-10-14 23:44:01,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/639e87495/a33a4c710f5041c4964c0df985377298/FLAG8c1f1a144 [2020-10-14 23:44:02,304 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:44:02,305 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_5.c [2020-10-14 23:44:02,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/639e87495/a33a4c710f5041c4964c0df985377298/FLAG8c1f1a144 [2020-10-14 23:44:02,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/639e87495/a33a4c710f5041c4964c0df985377298 [2020-10-14 23:44:02,692 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:44:02,693 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:44:02,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:44:02,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:44:02,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:44:02,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:02" (1/1) ... [2020-10-14 23:44:02,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@548345a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:02, skipping insertion in model container [2020-10-14 23:44:02,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:02" (1/1) ... [2020-10-14 23:44:02,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:44:02,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:44:02,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:44:02,918 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:44:02,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:44:02,960 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:44:02,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:02 WrapperNode [2020-10-14 23:44:02,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:44:02,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:44:02,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:44:02,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:44:02,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:02" (1/1) ... [2020-10-14 23:44:02,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:02" (1/1) ... [2020-10-14 23:44:03,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:02" (1/1) ... [2020-10-14 23:44:03,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:02" (1/1) ... [2020-10-14 23:44:03,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:02" (1/1) ... [2020-10-14 23:44:03,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:02" (1/1) ... [2020-10-14 23:44:03,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:02" (1/1) ... [2020-10-14 23:44:03,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:44:03,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:44:03,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:44:03,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:44:03,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:44:03,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:44:03,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:44:03,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:44:03,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:44:03,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:44:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:44:03,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:44:03,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:44:03,411 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:44:03,412 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:44:03,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:03 BoogieIcfgContainer [2020-10-14 23:44:03,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:44:03,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:44:03,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:44:03,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:44:03,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:44:02" (1/3) ... [2020-10-14 23:44:03,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d99e0a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:03, skipping insertion in model container [2020-10-14 23:44:03,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:02" (2/3) ... [2020-10-14 23:44:03,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d99e0a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:03, skipping insertion in model container [2020-10-14 23:44:03,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:03" (3/3) ... [2020-10-14 23:44:03,426 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-10-14 23:44:03,437 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:44:03,450 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:44:03,474 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:44:03,504 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:44:03,504 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:44:03,504 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:44:03,505 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:44:03,505 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:44:03,505 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:44:03,505 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:44:03,506 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:44:03,531 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-14 23:44:03,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 23:44:03,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:03,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:03,542 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:03,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:03,549 INFO L82 PathProgramCache]: Analyzing trace with hash 316328318, now seen corresponding path program 1 times [2020-10-14 23:44:03,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:03,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651846886] [2020-10-14 23:44:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:03,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:03,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:03,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:44:03,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:03,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 23:44:03,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:03,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:03,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:44:03,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:44:03,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 23:44:03,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:03,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:03,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:03,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:03,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:03,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:44:03,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:03,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:03,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:03,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:03,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:03,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651846886] [2020-10-14 23:44:03,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:03,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:03,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851108199] [2020-10-14 23:44:03,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:03,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:03,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:03,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:03,929 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-10-14 23:44:03,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:03,985 INFO L93 Difference]: Finished difference Result 57 states and 90 transitions. [2020-10-14 23:44:03,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:03,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-14 23:44:03,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:04,001 INFO L225 Difference]: With dead ends: 57 [2020-10-14 23:44:04,001 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 23:44:04,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 23:44:04,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-10-14 23:44:04,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 23:44:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 49 transitions. [2020-10-14 23:44:04,046 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 49 transitions. Word has length 15 [2020-10-14 23:44:04,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:04,046 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 49 transitions. [2020-10-14 23:44:04,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:04,047 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 49 transitions. [2020-10-14 23:44:04,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-14 23:44:04,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:04,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:04,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:44:04,049 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:04,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:04,049 INFO L82 PathProgramCache]: Analyzing trace with hash -493018308, now seen corresponding path program 1 times [2020-10-14 23:44:04,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:04,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1689045441] [2020-10-14 23:44:04,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:44:04,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:04,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-14 23:44:04,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:04,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:44:04,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:44:04,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:44:04,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:04,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:04,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:44:04,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:04,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:04,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:04,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:04,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1689045441] [2020-10-14 23:44:04,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:04,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:04,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269965418] [2020-10-14 23:44:04,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:04,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:04,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:04,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,244 INFO L87 Difference]: Start difference. First operand 30 states and 49 transitions. Second operand 3 states. [2020-10-14 23:44:04,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:04,271 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2020-10-14 23:44:04,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:04,272 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-14 23:44:04,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:04,273 INFO L225 Difference]: With dead ends: 67 [2020-10-14 23:44:04,274 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 23:44:04,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 23:44:04,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-10-14 23:44:04,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 23:44:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 65 transitions. [2020-10-14 23:44:04,285 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 65 transitions. Word has length 15 [2020-10-14 23:44:04,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:04,285 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 65 transitions. [2020-10-14 23:44:04,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:04,286 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 65 transitions. [2020-10-14 23:44:04,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 23:44:04,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:04,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:04,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:44:04,287 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:04,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:04,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1216458266, now seen corresponding path program 1 times [2020-10-14 23:44:04,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:04,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128882777] [2020-10-14 23:44:04,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:44:04,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:04,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 23:44:04,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:04,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:44:04,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:44:04,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:44:04,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:04,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:04,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:44:04,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:04,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:04,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:04,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:04,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:04,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128882777] [2020-10-14 23:44:04,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:04,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:04,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247175107] [2020-10-14 23:44:04,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:04,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:04,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:04,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,471 INFO L87 Difference]: Start difference. First operand 40 states and 65 transitions. Second operand 3 states. [2020-10-14 23:44:04,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:04,516 INFO L93 Difference]: Finished difference Result 73 states and 119 transitions. [2020-10-14 23:44:04,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:04,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-14 23:44:04,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:04,518 INFO L225 Difference]: With dead ends: 73 [2020-10-14 23:44:04,518 INFO L226 Difference]: Without dead ends: 71 [2020-10-14 23:44:04,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-14 23:44:04,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 53. [2020-10-14 23:44:04,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-14 23:44:04,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 87 transitions. [2020-10-14 23:44:04,542 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 87 transitions. Word has length 16 [2020-10-14 23:44:04,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:04,545 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 87 transitions. [2020-10-14 23:44:04,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:04,545 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 87 transitions. [2020-10-14 23:44:04,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 23:44:04,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:04,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:04,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:44:04,549 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:04,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:04,550 INFO L82 PathProgramCache]: Analyzing trace with hash 407111640, now seen corresponding path program 1 times [2020-10-14 23:44:04,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:04,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184332208] [2020-10-14 23:44:04,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:44:04,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:04,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 23:44:04,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:44:04,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:44:04,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:04,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:04,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:04,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:04,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:04,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:04,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:04,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:04,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:04,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184332208] [2020-10-14 23:44:04,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:04,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:04,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148560507] [2020-10-14 23:44:04,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:04,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:04,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:04,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,683 INFO L87 Difference]: Start difference. First operand 53 states and 87 transitions. Second operand 3 states. [2020-10-14 23:44:04,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:04,706 INFO L93 Difference]: Finished difference Result 121 states and 201 transitions. [2020-10-14 23:44:04,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:04,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-14 23:44:04,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:04,708 INFO L225 Difference]: With dead ends: 121 [2020-10-14 23:44:04,708 INFO L226 Difference]: Without dead ends: 73 [2020-10-14 23:44:04,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-14 23:44:04,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-10-14 23:44:04,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-14 23:44:04,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 114 transitions. [2020-10-14 23:44:04,720 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 114 transitions. Word has length 16 [2020-10-14 23:44:04,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:04,720 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 114 transitions. [2020-10-14 23:44:04,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:04,721 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 114 transitions. [2020-10-14 23:44:04,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 23:44:04,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:04,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:04,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:44:04,722 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:04,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:04,723 INFO L82 PathProgramCache]: Analyzing trace with hash -944284077, now seen corresponding path program 1 times [2020-10-14 23:44:04,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:04,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115111795] [2020-10-14 23:44:04,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:44:04,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:44:04,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 23:44:04,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:04,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 23:44:04,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:44:04,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:04,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:04,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:04,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:04,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:04,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:04,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:04,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:04,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:04,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115111795] [2020-10-14 23:44:04,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:04,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:04,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263057689] [2020-10-14 23:44:04,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:04,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:04,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:04,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,837 INFO L87 Difference]: Start difference. First operand 71 states and 114 transitions. Second operand 3 states. [2020-10-14 23:44:04,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:04,856 INFO L93 Difference]: Finished difference Result 109 states and 171 transitions. [2020-10-14 23:44:04,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:04,857 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-14 23:44:04,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:04,858 INFO L225 Difference]: With dead ends: 109 [2020-10-14 23:44:04,858 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 23:44:04,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 23:44:04,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-10-14 23:44:04,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 23:44:04,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 114 transitions. [2020-10-14 23:44:04,869 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 114 transitions. Word has length 17 [2020-10-14 23:44:04,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:04,870 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 114 transitions. [2020-10-14 23:44:04,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:04,870 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 114 transitions. [2020-10-14 23:44:04,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 23:44:04,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:04,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:04,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:44:04,872 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:04,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:04,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1337311087, now seen corresponding path program 1 times [2020-10-14 23:44:04,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:04,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669683671] [2020-10-14 23:44:04,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:44:04,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:04,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 23:44:04,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:04,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:44:04,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:44:04,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:04,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:04,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:04,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:04,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:04,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:04,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:04,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:04,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:04,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:04,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:04,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669683671] [2020-10-14 23:44:04,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:04,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:04,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823319623] [2020-10-14 23:44:04,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:04,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:04,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:04,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,944 INFO L87 Difference]: Start difference. First operand 74 states and 114 transitions. Second operand 3 states. [2020-10-14 23:44:04,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:04,962 INFO L93 Difference]: Finished difference Result 130 states and 202 transitions. [2020-10-14 23:44:04,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:04,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-14 23:44:04,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:04,964 INFO L225 Difference]: With dead ends: 130 [2020-10-14 23:44:04,964 INFO L226 Difference]: Without dead ends: 128 [2020-10-14 23:44:04,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:04,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-14 23:44:04,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 102. [2020-10-14 23:44:04,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-14 23:44:04,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 156 transitions. [2020-10-14 23:44:04,977 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 156 transitions. Word has length 17 [2020-10-14 23:44:04,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:04,978 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 156 transitions. [2020-10-14 23:44:04,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:04,978 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 156 transitions. [2020-10-14 23:44:04,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 23:44:04,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:04,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:04,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:44:04,980 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:04,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:04,980 INFO L82 PathProgramCache]: Analyzing trace with hash -2146657713, now seen corresponding path program 1 times [2020-10-14 23:44:04,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:04,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984048059] [2020-10-14 23:44:04,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:04,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:44:05,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:05,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 23:44:05,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:05,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:44:05,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:44:05,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:05,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:05,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:05,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:05,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:05,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:05,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:05,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984048059] [2020-10-14 23:44:05,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:05,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:05,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660780119] [2020-10-14 23:44:05,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:05,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:05,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:05,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,072 INFO L87 Difference]: Start difference. First operand 102 states and 156 transitions. Second operand 3 states. [2020-10-14 23:44:05,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:05,088 INFO L93 Difference]: Finished difference Result 152 states and 230 transitions. [2020-10-14 23:44:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:05,089 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-14 23:44:05,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:05,090 INFO L225 Difference]: With dead ends: 152 [2020-10-14 23:44:05,090 INFO L226 Difference]: Without dead ends: 106 [2020-10-14 23:44:05,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-14 23:44:05,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-10-14 23:44:05,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-14 23:44:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 154 transitions. [2020-10-14 23:44:05,102 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 154 transitions. Word has length 17 [2020-10-14 23:44:05,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:05,103 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 154 transitions. [2020-10-14 23:44:05,103 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:05,103 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 154 transitions. [2020-10-14 23:44:05,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 23:44:05,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:05,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:05,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:44:05,105 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:05,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:05,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1466599343, now seen corresponding path program 1 times [2020-10-14 23:44:05,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:05,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238455591] [2020-10-14 23:44:05,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:44:05,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:05,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 23:44:05,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:05,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:44:05,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:44:05,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:05,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:05,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:05,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:05,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:05,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:05,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:05,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238455591] [2020-10-14 23:44:05,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:05,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:05,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875492777] [2020-10-14 23:44:05,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:05,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:05,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:05,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,150 INFO L87 Difference]: Start difference. First operand 104 states and 154 transitions. Second operand 3 states. [2020-10-14 23:44:05,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:05,169 INFO L93 Difference]: Finished difference Result 232 states and 344 transitions. [2020-10-14 23:44:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:05,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-14 23:44:05,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:05,172 INFO L225 Difference]: With dead ends: 232 [2020-10-14 23:44:05,172 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 23:44:05,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 23:44:05,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-10-14 23:44:05,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-14 23:44:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 194 transitions. [2020-10-14 23:44:05,184 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 194 transitions. Word has length 17 [2020-10-14 23:44:05,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:05,185 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 194 transitions. [2020-10-14 23:44:05,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:05,185 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 194 transitions. [2020-10-14 23:44:05,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 23:44:05,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:05,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:05,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:44:05,187 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:05,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:05,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1100217935, now seen corresponding path program 1 times [2020-10-14 23:44:05,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:05,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163282691] [2020-10-14 23:44:05,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 23:44:05,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:05,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 23:44:05,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:44:05,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:44:05,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:05,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:05,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:05,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:05,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:05,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:05,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:05,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:05,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163282691] [2020-10-14 23:44:05,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:05,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:05,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073567743] [2020-10-14 23:44:05,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:05,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:05,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:05,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,250 INFO L87 Difference]: Start difference. First operand 136 states and 194 transitions. Second operand 3 states. [2020-10-14 23:44:05,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:05,272 INFO L93 Difference]: Finished difference Result 232 states and 332 transitions. [2020-10-14 23:44:05,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:05,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-14 23:44:05,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:05,274 INFO L225 Difference]: With dead ends: 232 [2020-10-14 23:44:05,274 INFO L226 Difference]: Without dead ends: 230 [2020-10-14 23:44:05,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-14 23:44:05,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 196. [2020-10-14 23:44:05,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-14 23:44:05,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 274 transitions. [2020-10-14 23:44:05,288 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 274 transitions. Word has length 18 [2020-10-14 23:44:05,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:05,288 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 274 transitions. [2020-10-14 23:44:05,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:05,288 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 274 transitions. [2020-10-14 23:44:05,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 23:44:05,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:05,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:05,291 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:44:05,291 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:05,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:05,292 INFO L82 PathProgramCache]: Analyzing trace with hash 290871309, now seen corresponding path program 1 times [2020-10-14 23:44:05,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:05,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169797889] [2020-10-14 23:44:05,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 23:44:05,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:05,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-14 23:44:05,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:44:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:44:05,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:05,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:05,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:05,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:05,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:05,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:05,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:05,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169797889] [2020-10-14 23:44:05,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:05,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:05,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071623710] [2020-10-14 23:44:05,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:05,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:05,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:05,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,395 INFO L87 Difference]: Start difference. First operand 196 states and 274 transitions. Second operand 3 states. [2020-10-14 23:44:05,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:05,419 INFO L93 Difference]: Finished difference Result 292 states and 404 transitions. [2020-10-14 23:44:05,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:05,420 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-14 23:44:05,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:05,422 INFO L225 Difference]: With dead ends: 292 [2020-10-14 23:44:05,423 INFO L226 Difference]: Without dead ends: 202 [2020-10-14 23:44:05,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-14 23:44:05,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2020-10-14 23:44:05,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-14 23:44:05,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 270 transitions. [2020-10-14 23:44:05,451 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 270 transitions. Word has length 18 [2020-10-14 23:44:05,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:05,451 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 270 transitions. [2020-10-14 23:44:05,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:05,452 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 270 transitions. [2020-10-14 23:44:05,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-14 23:44:05,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:05,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:05,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:44:05,461 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:05,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:05,462 INFO L82 PathProgramCache]: Analyzing trace with hash 970929679, now seen corresponding path program 1 times [2020-10-14 23:44:05,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:05,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551772076] [2020-10-14 23:44:05,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 23:44:05,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 23:44:05,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:44:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:44:05,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:05,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:05,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:05,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:05,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:05,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:05,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551772076] [2020-10-14 23:44:05,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:05,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:05,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272744631] [2020-10-14 23:44:05,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:05,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:05,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:05,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,544 INFO L87 Difference]: Start difference. First operand 200 states and 270 transitions. Second operand 3 states. [2020-10-14 23:44:05,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:05,566 INFO L93 Difference]: Finished difference Result 444 states and 592 transitions. [2020-10-14 23:44:05,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:05,567 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-14 23:44:05,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:05,569 INFO L225 Difference]: With dead ends: 444 [2020-10-14 23:44:05,569 INFO L226 Difference]: Without dead ends: 258 [2020-10-14 23:44:05,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-10-14 23:44:05,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2020-10-14 23:44:05,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-14 23:44:05,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 326 transitions. [2020-10-14 23:44:05,583 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 326 transitions. Word has length 18 [2020-10-14 23:44:05,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:05,584 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 326 transitions. [2020-10-14 23:44:05,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:05,584 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 326 transitions. [2020-10-14 23:44:05,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:44:05,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:05,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:05,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:44:05,587 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:05,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:05,588 INFO L82 PathProgramCache]: Analyzing trace with hash -645793370, now seen corresponding path program 1 times [2020-10-14 23:44:05,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:05,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625236944] [2020-10-14 23:44:05,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:44:05,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:05,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-14 23:44:05,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:05,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:44:05,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:44:05,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:05,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:05,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:05,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:05,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:05,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:05,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:05,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:05,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625236944] [2020-10-14 23:44:05,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:05,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:05,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226391944] [2020-10-14 23:44:05,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:05,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:05,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:05,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,657 INFO L87 Difference]: Start difference. First operand 256 states and 326 transitions. Second operand 3 states. [2020-10-14 23:44:05,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:05,680 INFO L93 Difference]: Finished difference Result 418 states and 527 transitions. [2020-10-14 23:44:05,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:05,680 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-14 23:44:05,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:05,684 INFO L225 Difference]: With dead ends: 418 [2020-10-14 23:44:05,684 INFO L226 Difference]: Without dead ends: 416 [2020-10-14 23:44:05,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-10-14 23:44:05,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 384. [2020-10-14 23:44:05,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 384 states. [2020-10-14 23:44:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 478 transitions. [2020-10-14 23:44:05,703 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 478 transitions. Word has length 19 [2020-10-14 23:44:05,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:05,703 INFO L479 AbstractCegarLoop]: Abstraction has 384 states and 478 transitions. [2020-10-14 23:44:05,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:05,703 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 478 transitions. [2020-10-14 23:44:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:44:05,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:05,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:05,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:44:05,706 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:05,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:05,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1455139996, now seen corresponding path program 1 times [2020-10-14 23:44:05,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:05,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771712204] [2020-10-14 23:44:05,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:44:05,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:44:05,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 23:44:05,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:05,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:44:05,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:44:05,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:44:05,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:05,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:05,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:05,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:05,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:05,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:05,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:05,784 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771712204] [2020-10-14 23:44:05,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:05,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:05,785 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880160301] [2020-10-14 23:44:05,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:05,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:05,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:05,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,786 INFO L87 Difference]: Start difference. First operand 384 states and 478 transitions. Second operand 3 states. [2020-10-14 23:44:05,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:05,808 INFO L93 Difference]: Finished difference Result 572 states and 704 transitions. [2020-10-14 23:44:05,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:05,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-14 23:44:05,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:05,812 INFO L225 Difference]: With dead ends: 572 [2020-10-14 23:44:05,813 INFO L226 Difference]: Without dead ends: 394 [2020-10-14 23:44:05,814 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-14 23:44:05,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2020-10-14 23:44:05,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-10-14 23:44:05,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 470 transitions. [2020-10-14 23:44:05,831 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 470 transitions. Word has length 19 [2020-10-14 23:44:05,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:05,831 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 470 transitions. [2020-10-14 23:44:05,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:05,831 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 470 transitions. [2020-10-14 23:44:05,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:44:05,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:44:05,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:44:05,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:44:05,834 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:44:05,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:44:05,834 INFO L82 PathProgramCache]: Analyzing trace with hash -775081626, now seen corresponding path program 1 times [2020-10-14 23:44:05,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:44:05,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110184066] [2020-10-14 23:44:05,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:44:05,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:44:05,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:05,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 23:44:05,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:44:05,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-14 23:44:05,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:44:05,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:44:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:44:05,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:44:05,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:44:05,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-14 23:44:05,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:44:05,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:44:05,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:44:05,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:44:05,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:44:05,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:44:05,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:44:05,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:44:05,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:44:05,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110184066] [2020-10-14 23:44:05,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:44:05,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:44:05,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531308229] [2020-10-14 23:44:05,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:44:05,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:44:05,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:44:05,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,886 INFO L87 Difference]: Start difference. First operand 392 states and 470 transitions. Second operand 3 states. [2020-10-14 23:44:05,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:44:05,916 INFO L93 Difference]: Finished difference Result 856 states and 998 transitions. [2020-10-14 23:44:05,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:44:05,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-14 23:44:05,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:44:05,918 INFO L225 Difference]: With dead ends: 856 [2020-10-14 23:44:05,918 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 23:44:05,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:44:05,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 23:44:05,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 23:44:05,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 23:44:05,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 23:44:05,922 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-14 23:44:05,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:44:05,922 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 23:44:05,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:44:05,922 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 23:44:05,923 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 23:44:05,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:44:05,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 23:44:05,951 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-14 23:44:05,951 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:44:05,951 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 23:44:05,951 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 23:44:05,951 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 23:44:05,952 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 23:44:05,952 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-10-14 23:44:05,952 INFO L271 CegarLoopResult]: At program point L89(lines 5 93) the Hoare annotation is: true [2020-10-14 23:44:05,952 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 93) no Hoare annotation was computed. [2020-10-14 23:44:05,952 INFO L268 CegarLoopResult]: For program point L73-1(lines 24 88) no Hoare annotation was computed. [2020-10-14 23:44:05,952 INFO L268 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-10-14 23:44:05,952 INFO L268 CegarLoopResult]: For program point L57-1(lines 24 88) no Hoare annotation was computed. [2020-10-14 23:44:05,953 INFO L268 CegarLoopResult]: For program point L53-1(lines 24 88) no Hoare annotation was computed. [2020-10-14 23:44:05,953 INFO L268 CegarLoopResult]: For program point L49-1(lines 24 88) no Hoare annotation was computed. [2020-10-14 23:44:05,953 INFO L268 CegarLoopResult]: For program point L78-1(lines 24 88) no Hoare annotation was computed. [2020-10-14 23:44:05,953 INFO L268 CegarLoopResult]: For program point L45-1(lines 24 88) no Hoare annotation was computed. [2020-10-14 23:44:05,953 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-10-14 23:44:05,953 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-10-14 23:44:05,953 INFO L268 CegarLoopResult]: For program point L41-2(lines 24 88) no Hoare annotation was computed. [2020-10-14 23:44:05,953 INFO L271 CegarLoopResult]: At program point L83-1(lines 24 88) the Hoare annotation is: true [2020-10-14 23:44:05,954 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-10-14 23:44:05,954 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 93) no Hoare annotation was computed. [2020-10-14 23:44:05,954 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-10-14 23:44:05,954 INFO L268 CegarLoopResult]: For program point L63-1(lines 24 88) no Hoare annotation was computed. [2020-10-14 23:44:05,954 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 93) the Hoare annotation is: true [2020-10-14 23:44:05,954 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-10-14 23:44:05,954 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-10-14 23:44:05,955 INFO L264 CegarLoopResult]: At program point L84-1(lines 5 93) the Hoare annotation is: false [2020-10-14 23:44:05,955 INFO L268 CegarLoopResult]: For program point L68-1(lines 24 88) no Hoare annotation was computed. [2020-10-14 23:44:05,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:44:05 BoogieIcfgContainer [2020-10-14 23:44:05,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:44:05,971 INFO L168 Benchmark]: Toolchain (without parser) took 3276.78 ms. Allocated memory was 147.3 MB in the beginning and 243.3 MB in the end (delta: 95.9 MB). Free memory was 102.7 MB in the beginning and 146.8 MB in the end (delta: -44.1 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:44:05,972 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.2 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 23:44:05,973 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.08 ms. Allocated memory is still 147.3 MB. Free memory was 102.3 MB in the beginning and 92.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-10-14 23:44:05,973 INFO L168 Benchmark]: Boogie Preprocessor took 124.60 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 92.1 MB in the beginning and 182.8 MB in the end (delta: -90.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:44:05,974 INFO L168 Benchmark]: RCFGBuilder took 329.94 ms. Allocated memory is still 204.5 MB. Free memory was 182.8 MB in the beginning and 167.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-10-14 23:44:05,975 INFO L168 Benchmark]: TraceAbstraction took 2549.96 ms. Allocated memory was 204.5 MB in the beginning and 243.3 MB in the end (delta: 38.8 MB). Free memory was 167.6 MB in the beginning and 146.8 MB in the end (delta: 20.8 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. [2020-10-14 23:44:05,979 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.2 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 267.08 ms. Allocated memory is still 147.3 MB. Free memory was 102.3 MB in the beginning and 92.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.60 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 92.1 MB in the beginning and 182.8 MB in the end (delta: -90.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 329.94 ms. Allocated memory is still 204.5 MB. Free memory was 182.8 MB in the beginning and 167.6 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2549.96 ms. Allocated memory was 204.5 MB in the beginning and 243.3 MB in the end (delta: 38.8 MB). Free memory was 167.6 MB in the beginning and 146.8 MB in the end (delta: 20.8 MB). Peak memory consumption was 59.6 MB. 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, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 652 SDtfs, 284 SDslu, 427 SDs, 0 SdLazy, 75 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=392occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 138 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 42 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, 241 NumberOfCodeBlocks, 241 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 227 ConstructedInterpolants, 0 QuantifiedInterpolants, 6470 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...