/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:51:50,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:51:50,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:51:50,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:51:50,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:51:50,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:51:50,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:51:50,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:51:50,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:51:50,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:51:50,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:51:50,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:51:50,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:51:50,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:51:50,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:51:50,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:51:50,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:51:50,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:51:50,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:51:50,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:51:50,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:51:50,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:51:50,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:51:50,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:51:50,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:51:50,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:51:50,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:51:50,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:51:50,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:51:50,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:51:50,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:51:50,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:51:50,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:51:50,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:51:50,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:51:50,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:51:50,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:51:50,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:51:50,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:51:50,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:51:50,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:51:50,281 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:51:50,318 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:51:50,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:51:50,320 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:51:50,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:51:50,320 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:51:50,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:51:50,321 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:51:50,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:51:50,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:51:50,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:51:50,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:51:50,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:51:50,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:51:50,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:51:50,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:51:50,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:51:50,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:51:50,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:51:50,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:51:50,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:51:50,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:51:50,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:51:50,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:51:50,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:51:50,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:51:50,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:51:50,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:51:50,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:51:50,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:51:50,327 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:51:50,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:51:50,821 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:51:50,826 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:51:50,828 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:51:50,830 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:51:50,831 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-09-24 21:51:50,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52eb4378b/af274a2b2aef4ec3aa9559cdce5e57f0/FLAG8fd426e27 [2020-09-24 21:51:51,479 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:51:51,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2020-09-24 21:51:51,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52eb4378b/af274a2b2aef4ec3aa9559cdce5e57f0/FLAG8fd426e27 [2020-09-24 21:51:51,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52eb4378b/af274a2b2aef4ec3aa9559cdce5e57f0 [2020-09-24 21:51:51,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:51:51,853 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:51:51,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:51:51,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:51:51,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:51:51,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:51:51" (1/1) ... [2020-09-24 21:51:51,864 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3155a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:51, skipping insertion in model container [2020-09-24 21:51:51,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:51:51" (1/1) ... [2020-09-24 21:51:51,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:51:51,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:51:52,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:51:52,113 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:51:52,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:51:52,153 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:51:52,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:52 WrapperNode [2020-09-24 21:51:52,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:51:52,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:51:52,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:51:52,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:51:52,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:52" (1/1) ... [2020-09-24 21:51:52,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:52" (1/1) ... [2020-09-24 21:51:52,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:52" (1/1) ... [2020-09-24 21:51:52,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:52" (1/1) ... [2020-09-24 21:51:52,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:52" (1/1) ... [2020-09-24 21:51:52,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:52" (1/1) ... [2020-09-24 21:51:52,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:52" (1/1) ... [2020-09-24 21:51:52,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:51:52,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:51:52,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:51:52,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:51:52,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:52" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:51:52,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:51:52,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:51:52,367 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:51:52,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:51:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:51:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:51:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:51:52,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:51:52,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:51:52,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:51:52,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:51:52,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:51:52,620 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:51:52,621 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:51:52,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:51:52 BoogieIcfgContainer [2020-09-24 21:51:52,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:51:52,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:51:52,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:51:52,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:51:52,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:51:51" (1/3) ... [2020-09-24 21:51:52,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f53a608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:51:52, skipping insertion in model container [2020-09-24 21:51:52,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:51:52" (2/3) ... [2020-09-24 21:51:52,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f53a608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:51:52, skipping insertion in model container [2020-09-24 21:51:52,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:51:52" (3/3) ... [2020-09-24 21:51:52,639 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2020-09-24 21:51:52,652 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:51:52,662 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:51:52,686 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:51:52,719 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:51:52,720 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:51:52,720 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:51:52,720 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:51:52,720 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:51:52,720 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:51:52,720 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:51:52,720 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:51:52,740 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-24 21:51:52,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-24 21:51:52,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:52,749 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:51:52,750 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:51:52,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:52,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1819653980, now seen corresponding path program 1 times [2020-09-24 21:51:52,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:52,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578627938] [2020-09-24 21:51:52,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:52,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:53,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:53,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:53,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 21:51:53,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:51:53,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-09-24 21:51:53,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:51:53,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 21:51:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:51:53,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:51:53,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:53,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:53,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:53,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:51:53,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:53,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:51:53,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:53,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:53,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:53,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:53,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:51:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:51:53,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578627938] [2020-09-24 21:51:53,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:51:53,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 21:51:53,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843895554] [2020-09-24 21:51:53,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:51:53,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:53,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:51:53,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:51:53,590 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 9 states. [2020-09-24 21:51:54,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:54,023 INFO L93 Difference]: Finished difference Result 65 states and 70 transitions. [2020-09-24 21:51:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:51:54,030 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-09-24 21:51:54,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:54,042 INFO L225 Difference]: With dead ends: 65 [2020-09-24 21:51:54,042 INFO L226 Difference]: Without dead ends: 36 [2020-09-24 21:51:54,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:51:54,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-24 21:51:54,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-09-24 21:51:54,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-24 21:51:54,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-09-24 21:51:54,107 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2020-09-24 21:51:54,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:54,108 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-09-24 21:51:54,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:51:54,108 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-09-24 21:51:54,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 21:51:54,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:54,110 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:51:54,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:51:54,110 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:51:54,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:54,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1522824151, now seen corresponding path program 1 times [2020-09-24 21:51:54,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:54,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544106280] [2020-09-24 21:51:54,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:54,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:54,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:54,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:54,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:54,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 21:51:54,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:51:54,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 716 [2020-09-24 21:51:54,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:54,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:51:54,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 21:51:54,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:51:54,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:51:54,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:54,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:54,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:55,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:51:55,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:55,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:51:55,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:55,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:55,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:55,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:51:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:51:55,011 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544106280] [2020-09-24 21:51:55,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:51:55,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 21:51:55,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723115507] [2020-09-24 21:51:55,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:51:55,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:55,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:51:55,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:51:55,017 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 11 states. [2020-09-24 21:51:55,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:55,283 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-09-24 21:51:55,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:51:55,285 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-09-24 21:51:55,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:55,286 INFO L225 Difference]: With dead ends: 49 [2020-09-24 21:51:55,286 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 21:51:55,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:51:55,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 21:51:55,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-09-24 21:51:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-24 21:51:55,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-09-24 21:51:55,302 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 34 [2020-09-24 21:51:55,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:55,303 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-09-24 21:51:55,303 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:51:55,303 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-09-24 21:51:55,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 21:51:55,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:55,308 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:51:55,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:51:55,308 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:51:55,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:55,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1421125650, now seen corresponding path program 2 times [2020-09-24 21:51:55,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:55,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654524044] [2020-09-24 21:51:55,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:55,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:55,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:55,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:55,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:56,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:56,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 21:51:56,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:51:56,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1386 [2020-09-24 21:51:56,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:51:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 21:51:56,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:51:56,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:51:56,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:56,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:56,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:56,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:51:56,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:56,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:51:56,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:56,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:56,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:56,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:56,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:51:56,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:51:56,859 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654524044] [2020-09-24 21:51:56,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:51:56,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:51:56,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927811968] [2020-09-24 21:51:56,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:51:56,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:56,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:51:56,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:51:56,862 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 13 states. [2020-09-24 21:51:57,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:57,138 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-09-24 21:51:57,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:51:57,139 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2020-09-24 21:51:57,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:57,140 INFO L225 Difference]: With dead ends: 55 [2020-09-24 21:51:57,141 INFO L226 Difference]: Without dead ends: 48 [2020-09-24 21:51:57,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:51:57,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-24 21:51:57,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-09-24 21:51:57,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 21:51:57,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-09-24 21:51:57,149 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2020-09-24 21:51:57,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:57,150 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-09-24 21:51:57,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:51:57,150 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-09-24 21:51:57,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 21:51:57,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:57,152 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:51:57,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:51:57,153 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:51:57,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:57,153 INFO L82 PathProgramCache]: Analyzing trace with hash -264078349, now seen corresponding path program 3 times [2020-09-24 21:51:57,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:57,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699885145] [2020-09-24 21:51:57,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:57,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:57,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:57,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:57,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:57,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:58,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:58,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 21:51:58,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:51:58,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-24 21:51:58,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:58,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:51:58,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 21:51:58,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 21:51:58,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:51:58,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:51:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:58,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:58,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:51:58,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:51:58,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:51:58,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:51:58,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:51:58,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:51:58,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:51:58,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:51:58,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:51:58,368 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:51:58,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699885145] [2020-09-24 21:51:58,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:51:58,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 21:51:58,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832312348] [2020-09-24 21:51:58,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 21:51:58,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:51:58,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 21:51:58,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:51:58,371 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 15 states. [2020-09-24 21:51:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:51:58,723 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-09-24 21:51:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 21:51:58,724 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-09-24 21:51:58,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:51:58,725 INFO L225 Difference]: With dead ends: 61 [2020-09-24 21:51:58,725 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 21:51:58,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:51:58,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 21:51:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-09-24 21:51:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 21:51:58,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2020-09-24 21:51:58,733 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 46 [2020-09-24 21:51:58,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:51:58,734 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2020-09-24 21:51:58,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 21:51:58,734 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2020-09-24 21:51:58,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 21:51:58,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:51:58,736 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:51:58,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:51:58,736 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:51:58,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:51:58,737 INFO L82 PathProgramCache]: Analyzing trace with hash -926037960, now seen corresponding path program 4 times [2020-09-24 21:51:58,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:51:58,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166806459] [2020-09-24 21:51:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:51:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:51:58,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:58,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:58,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:59,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:51:59,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:00,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:00,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-24 21:52:00,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:52:00,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1248 [2020-09-24 21:52:00,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:00,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:52:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 21:52:00,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 21:52:00,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:00,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:00,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:00,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:00,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:52:00,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:00,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:52:00,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:00,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:00,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:00,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:00,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:00,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166806459] [2020-09-24 21:52:00,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:00,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 21:52:00,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958019224] [2020-09-24 21:52:00,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 21:52:00,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:00,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 21:52:00,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:52:00,220 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand 17 states. [2020-09-24 21:52:00,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:00,590 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-09-24 21:52:00,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:52:00,591 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2020-09-24 21:52:00,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:00,592 INFO L225 Difference]: With dead ends: 67 [2020-09-24 21:52:00,592 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 21:52:00,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:52:00,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 21:52:00,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-09-24 21:52:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 21:52:00,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-09-24 21:52:00,612 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 52 [2020-09-24 21:52:00,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:00,613 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-09-24 21:52:00,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 21:52:00,613 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-09-24 21:52:00,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 21:52:00,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:00,616 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:00,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:52:00,617 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:00,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:00,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1757285565, now seen corresponding path program 5 times [2020-09-24 21:52:00,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:00,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009251081] [2020-09-24 21:52:00,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:00,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:00,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:00,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:01,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:01,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:01,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:01,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:02,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:02,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 21:52:02,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:52:02,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2144 [2020-09-24 21:52:02,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:02,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 21:52:02,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 21:52:02,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 21:52:02,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:52:03,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:03,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:03,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:03,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:52:03,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:03,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:52:03,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:03,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:03,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:03,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009251081] [2020-09-24 21:52:03,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:03,056 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 21:52:03,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398981369] [2020-09-24 21:52:03,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:52:03,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:03,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:52:03,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:52:03,061 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 19 states. [2020-09-24 21:52:03,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:03,501 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2020-09-24 21:52:03,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 21:52:03,502 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-09-24 21:52:03,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:03,504 INFO L225 Difference]: With dead ends: 73 [2020-09-24 21:52:03,505 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 21:52:03,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2020-09-24 21:52:03,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 21:52:03,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-09-24 21:52:03,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 21:52:03,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2020-09-24 21:52:03,523 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 58 [2020-09-24 21:52:03,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:03,523 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2020-09-24 21:52:03,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 21:52:03,523 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2020-09-24 21:52:03,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-24 21:52:03,527 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:03,528 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:03,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:52:03,528 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:03,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:03,534 INFO L82 PathProgramCache]: Analyzing trace with hash -133686910, now seen corresponding path program 6 times [2020-09-24 21:52:03,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:03,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948305541] [2020-09-24 21:52:03,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:03,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:03,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:03,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:03,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:03,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:03,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:03,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:04,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:05,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:05,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-24 21:52:05,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:52:05,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1515 [2020-09-24 21:52:05,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:05,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 21:52:05,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 21:52:05,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 21:52:05,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:05,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:05,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:05,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:05,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:52:05,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:05,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:52:05,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:05,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:05,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:05,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948305541] [2020-09-24 21:52:05,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:05,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 21:52:05,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2341694] [2020-09-24 21:52:05,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 21:52:05,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:05,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 21:52:05,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:52:05,379 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 21 states. [2020-09-24 21:52:05,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:05,897 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2020-09-24 21:52:05,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 21:52:05,898 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 64 [2020-09-24 21:52:05,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:05,899 INFO L225 Difference]: With dead ends: 79 [2020-09-24 21:52:05,899 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 21:52:05,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=721, Unknown=0, NotChecked=0, Total=812 [2020-09-24 21:52:05,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 21:52:05,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-09-24 21:52:05,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 21:52:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2020-09-24 21:52:05,914 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 64 [2020-09-24 21:52:05,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:05,914 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2020-09-24 21:52:05,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 21:52:05,914 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2020-09-24 21:52:05,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 21:52:05,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:05,918 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:05,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:52:05,919 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:05,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:05,919 INFO L82 PathProgramCache]: Analyzing trace with hash -406536569, now seen corresponding path program 7 times [2020-09-24 21:52:05,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:05,922 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140852619] [2020-09-24 21:52:05,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:05,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:06,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:06,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:06,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:06,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:06,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:06,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:07,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:07,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:08,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:08,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 21:52:08,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:52:08,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2638 [2020-09-24 21:52:08,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:08,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 21:52:08,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 21:52:08,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 21:52:08,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:52:09,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:09,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:09,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:09,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:52:09,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:09,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:52:09,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:09,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:09,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:09,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:09,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:09,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140852619] [2020-09-24 21:52:09,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:09,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 21:52:09,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116985267] [2020-09-24 21:52:09,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 21:52:09,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:09,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 21:52:09,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:52:09,052 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 23 states. [2020-09-24 21:52:09,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:09,695 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions. [2020-09-24 21:52:09,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 21:52:09,695 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 70 [2020-09-24 21:52:09,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:09,696 INFO L225 Difference]: With dead ends: 85 [2020-09-24 21:52:09,697 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 21:52:09,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2020-09-24 21:52:09,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 21:52:09,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-09-24 21:52:09,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-24 21:52:09,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-09-24 21:52:09,709 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2020-09-24 21:52:09,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:09,711 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-09-24 21:52:09,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 21:52:09,712 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-09-24 21:52:09,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 21:52:09,712 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:09,713 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:09,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 21:52:09,715 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:09,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:09,715 INFO L82 PathProgramCache]: Analyzing trace with hash -2026845236, now seen corresponding path program 8 times [2020-09-24 21:52:09,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:09,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692990620] [2020-09-24 21:52:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:09,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:09,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:09,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:10,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:10,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:10,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:10,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:11,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:11,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:12,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:14,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:14,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 21:52:14,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:52:14,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 21:52:14,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 21:52:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 21:52:14,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 21:52:14,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:15,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:15,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:15,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:15,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:52:15,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:15,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:52:15,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:15,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:15,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:15,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:15,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:52:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:15,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692990620] [2020-09-24 21:52:15,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:15,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 21:52:15,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231988199] [2020-09-24 21:52:15,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 21:52:15,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:15,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 21:52:15,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2020-09-24 21:52:15,161 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 25 states. [2020-09-24 21:52:15,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:15,875 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2020-09-24 21:52:15,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 21:52:15,881 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 76 [2020-09-24 21:52:15,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:15,882 INFO L225 Difference]: With dead ends: 91 [2020-09-24 21:52:15,882 INFO L226 Difference]: Without dead ends: 84 [2020-09-24 21:52:15,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 21:52:15,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-24 21:52:15,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-09-24 21:52:15,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-24 21:52:15,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2020-09-24 21:52:15,899 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 76 [2020-09-24 21:52:15,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:15,900 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2020-09-24 21:52:15,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 21:52:15,900 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2020-09-24 21:52:15,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 21:52:15,901 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:52:15,901 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:52:15,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 21:52:15,902 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:52:15,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:52:15,902 INFO L82 PathProgramCache]: Analyzing trace with hash -659746479, now seen corresponding path program 9 times [2020-09-24 21:52:15,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:52:15,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273992922] [2020-09-24 21:52:15,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:52:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:15,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:15,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:16,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:16,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:16,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:16,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:16,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:17,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:17,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:17,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:19,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:20,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:20,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:20,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-24 21:52:20,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 21:52:20,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 21:52:20,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:20,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 21:52:20,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 21:52:20,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:52:20,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:21,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:52:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:52:21,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:52:21,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:52:21,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:52:21,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:52:21,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:52:21,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:52:21,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:52:21,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:52:21,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:52:21,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:52:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:52:21,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273992922] [2020-09-24 21:52:21,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:52:21,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 21:52:21,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508476784] [2020-09-24 21:52:21,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 21:52:21,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:52:21,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 21:52:21,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=642, Unknown=0, NotChecked=0, Total=702 [2020-09-24 21:52:21,424 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 27 states. [2020-09-24 21:52:22,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:52:22,614 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2020-09-24 21:52:22,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 21:52:22,614 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 82 [2020-09-24 21:52:22,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:52:22,615 INFO L225 Difference]: With dead ends: 83 [2020-09-24 21:52:22,615 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 21:52:22,618 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=416, Invalid=2236, Unknown=0, NotChecked=0, Total=2652 [2020-09-24 21:52:22,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 21:52:22,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 21:52:22,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 21:52:22,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 21:52:22,619 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 82 [2020-09-24 21:52:22,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:52:22,619 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 21:52:22,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 21:52:22,620 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 21:52:22,620 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 21:52:22,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 21:52:22,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 21:52:22,785 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:52:22,785 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 21:52:22,786 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 21:52:22,786 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_65~0 |old(~__return_65~0)|)) [2020-09-24 21:52:22,786 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:52:22,786 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 21:52:22,787 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 21:52:22,787 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 21:52:22,787 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 21:52:22,787 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-24 21:52:22,787 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-24 21:52:22,787 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-24 21:52:22,787 INFO L268 CegarLoopResult]: For program point L5-3(lines 4 6) no Hoare annotation was computed. [2020-09-24 21:52:22,787 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-24 21:52:22,788 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 21:52:22,788 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-09-24 21:52:22,788 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 12 72) no Hoare annotation was computed. [2020-09-24 21:52:22,788 INFO L268 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-09-24 21:52:22,788 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-24 21:52:22,788 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-09-24 21:52:22,788 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 21:52:22,789 INFO L268 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-09-24 21:52:22,789 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 21:52:22,789 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-24 21:52:22,789 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 12 72) no Hoare annotation was computed. [2020-09-24 21:52:22,789 INFO L264 CegarLoopResult]: At program point L44(lines 31 65) the Hoare annotation is: (let ((.cse0 (<= main_~main__x~0 (+ main_~main__y~0 24)))) (or (let ((.cse2 (+ main_~main__x~0 53)) (.cse1 (* 2 main_~main__y~0))) (and .cse0 (<= .cse1 .cse2) (<= .cse2 .cse1))) (and (<= main_~main__x~0 25) (<= (+ main_~main__x~0 56) (* 3 main_~main__y~0))) (let ((.cse3 (+ main_~main__x~0 51))) (and (<= main_~main__y~0 .cse3) (<= .cse3 main_~main__y~0))) (and .cse0 (<= (+ main_~main__x~0 3) (* 7 main_~main__y~0))))) [2020-09-24 21:52:22,789 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-24 21:52:22,790 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-24 21:52:22,790 INFO L268 CegarLoopResult]: For program point L38(lines 38 64) no Hoare annotation was computed. [2020-09-24 21:52:22,790 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-24 21:52:22,790 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 21:52:22,790 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 55) no Hoare annotation was computed. [2020-09-24 21:52:22,790 INFO L268 CegarLoopResult]: For program point L30(lines 30 69) no Hoare annotation was computed. [2020-09-24 21:52:22,791 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 12 72) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2020-09-24 21:52:22,791 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-09-24 21:52:22,791 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-24 21:52:22,791 INFO L268 CegarLoopResult]: For program point L24(lines 24 70) no Hoare annotation was computed. [2020-09-24 21:52:22,791 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-24 21:52:22,791 INFO L268 CegarLoopResult]: For program point L53(lines 53 62) no Hoare annotation was computed. [2020-09-24 21:52:22,791 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 21:52:22,792 INFO L268 CegarLoopResult]: For program point L51(line 51) no Hoare annotation was computed. [2020-09-24 21:52:22,792 INFO L268 CegarLoopResult]: For program point L18(lines 18 71) no Hoare annotation was computed. [2020-09-24 21:52:22,792 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-09-24 21:52:22,792 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 21:52:22,792 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-24 21:52:22,792 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-24 21:52:22,792 INFO L268 CegarLoopResult]: For program point L68(line 68) no Hoare annotation was computed. [2020-09-24 21:52:22,792 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-24 21:52:22,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:52:22 BoogieIcfgContainer [2020-09-24 21:52:22,824 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:52:22,831 INFO L168 Benchmark]: Toolchain (without parser) took 30976.29 ms. Allocated memory was 144.7 MB in the beginning and 420.0 MB in the end (delta: 275.3 MB). Free memory was 101.0 MB in the beginning and 326.3 MB in the end (delta: -225.4 MB). Peak memory consumption was 49.9 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:22,832 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 144.7 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 21:52:22,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.86 ms. Allocated memory is still 144.7 MB. Free memory was 100.3 MB in the beginning and 90.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:22,839 INFO L168 Benchmark]: Boogie Preprocessor took 128.89 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 90.6 MB in the beginning and 178.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:22,843 INFO L168 Benchmark]: RCFGBuilder took 343.31 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 163.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:22,844 INFO L168 Benchmark]: TraceAbstraction took 30194.95 ms. Allocated memory was 200.8 MB in the beginning and 420.0 MB in the end (delta: 219.2 MB). Free memory was 163.7 MB in the beginning and 326.3 MB in the end (delta: -162.6 MB). Peak memory consumption was 56.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:52:22,851 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 144.7 MB. Free memory was 119.3 MB in the beginning and 119.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 300.86 ms. Allocated memory is still 144.7 MB. Free memory was 100.3 MB in the beginning and 90.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.89 ms. Allocated memory was 144.7 MB in the beginning and 200.8 MB in the end (delta: 56.1 MB). Free memory was 90.6 MB in the beginning and 178.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 343.31 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 163.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30194.95 ms. Allocated memory was 200.8 MB in the beginning and 420.0 MB in the end (delta: 219.2 MB). Free memory was 163.7 MB in the beginning and 326.3 MB in the end (delta: -162.6 MB). Peak memory consumption was 56.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: 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: 31]: Loop Invariant Derived loop invariant: ((((main__x <= main__y + 24 && 2 * main__y <= main__x + 53) && main__x + 53 <= 2 * main__y) || (main__x <= 25 && main__x + 56 <= 3 * main__y)) || (main__y <= main__x + 51 && main__x + 51 <= main__y)) || (main__x <= main__y + 24 && main__x + 3 <= 7 * main__y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 29.9s, OverallIterations: 10, TraceHistogramMax: 10, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 306 SDtfs, 543 SDslu, 2022 SDs, 0 SdLazy, 4087 SolverSat, 121 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 280 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 250 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1273 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=9, 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, 10 MinimizatonAttempts, 9 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 14 NumberOfFragments, 75 HoareAnnotationTreeSize, 5 FomulaSimplifications, 60 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 82 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 23.8s InterpolantComputationTime, 550 NumberOfCodeBlocks, 550 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 170406 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 0/810 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...