/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/eca-rers2012/Problem02_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:42:08,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:42:08,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:42:08,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:42:08,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:42:08,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:42:08,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:42:08,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:42:08,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:42:08,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:42:08,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:42:08,140 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:42:08,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:42:08,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:42:08,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:42:08,147 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:42:08,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:42:08,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:42:08,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:42:08,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:42:08,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:42:08,164 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:42:08,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:42:08,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:42:08,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:42:08,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:42:08,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:42:08,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:42:08,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:42:08,186 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:42:08,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:42:08,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:42:08,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:42:08,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:42:08,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:42:08,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:42:08,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:42:08,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:42:08,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:42:08,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:42:08,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:42:08,199 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 21:42:08,241 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:42:08,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:42:08,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:42:08,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:42:08,244 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:42:08,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:42:08,245 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:42:08,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:42:08,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:42:08,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:42:08,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:42:08,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:42:08,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:42:08,248 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:42:08,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:42:08,248 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:42:08,248 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:42:08,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:42:08,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:42:08,249 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:42:08,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:42:08,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:42:08,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:42:08,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:42:08,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:42:08,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:42:08,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:42:08,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:42:08,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:42:08,251 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 21:42:08,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:42:08,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:42:08,688 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:42:08,689 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:42:08,690 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:42:08,691 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label27.c [2020-09-24 21:42:08,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c299aec5/23fed4cc9bac4deb9da07faa744dd286/FLAGeca804eae [2020-09-24 21:42:09,394 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:42:09,395 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label27.c [2020-09-24 21:42:09,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c299aec5/23fed4cc9bac4deb9da07faa744dd286/FLAGeca804eae [2020-09-24 21:42:09,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c299aec5/23fed4cc9bac4deb9da07faa744dd286 [2020-09-24 21:42:09,638 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:42:09,644 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:42:09,648 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:42:09,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:42:09,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:42:09,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:42:09" (1/1) ... [2020-09-24 21:42:09,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@130b43e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:09, skipping insertion in model container [2020-09-24 21:42:09,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:42:09" (1/1) ... [2020-09-24 21:42:09,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:42:09,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:42:10,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:42:10,300 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:42:10,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:42:10,476 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:42:10,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:10 WrapperNode [2020-09-24 21:42:10,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:42:10,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:42:10,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:42:10,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:42:10,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:10" (1/1) ... [2020-09-24 21:42:10,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:10" (1/1) ... [2020-09-24 21:42:10,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:10" (1/1) ... [2020-09-24 21:42:10,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:10" (1/1) ... [2020-09-24 21:42:10,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:10" (1/1) ... [2020-09-24 21:42:10,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:10" (1/1) ... [2020-09-24 21:42:10,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:10" (1/1) ... [2020-09-24 21:42:10,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:42:10,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:42:10,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:42:10,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:42:10,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:10" (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 21:42:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:42:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:42:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:42:10,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:42:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:42:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:42:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:42:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:42:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:42:10,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:42:10,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:42:11,992 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:42:11,993 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:42:12,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:42:12 BoogieIcfgContainer [2020-09-24 21:42:12,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:42:12,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:42:12,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:42:12,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:42:12,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:42:09" (1/3) ... [2020-09-24 21:42:12,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b60b623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:42:12, skipping insertion in model container [2020-09-24 21:42:12,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:42:10" (2/3) ... [2020-09-24 21:42:12,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b60b623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:42:12, skipping insertion in model container [2020-09-24 21:42:12,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:42:12" (3/3) ... [2020-09-24 21:42:12,011 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label27.c [2020-09-24 21:42:12,023 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:42:12,034 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:42:12,056 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:42:12,091 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:42:12,091 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:42:12,091 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:42:12,091 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:42:12,091 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:42:12,092 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:42:12,092 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:42:12,092 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:42:12,124 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 21:42:12,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-24 21:42:12,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:12,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:42:12,147 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:12,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:12,155 INFO L82 PathProgramCache]: Analyzing trace with hash 38595514, now seen corresponding path program 1 times [2020-09-24 21:42:12,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:12,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157388948] [2020-09-24 21:42:12,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:12,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:13,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:14,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:14,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:17,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:17,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:17,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-24 21:42:17,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:42:17,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 21:42:17,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:17,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:42:17,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 21:42:17,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 21:42:17,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 21:42:18,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:18,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:18,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:18,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:18,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:18,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-24 21:42:18,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:18,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:42:18,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:18,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:18,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:18,663 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 21:42:18,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157388948] [2020-09-24 21:42:18,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:42:18,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-09-24 21:42:18,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446107992] [2020-09-24 21:42:18,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 21:42:18,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:18,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 21:42:18,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-24 21:42:18,699 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 16 states. [2020-09-24 21:42:19,349 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2020-09-24 21:42:19,604 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-09-24 21:42:20,159 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-09-24 21:42:20,531 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-24 21:42:21,648 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2020-09-24 21:42:21,838 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-09-24 21:42:22,127 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-09-24 21:42:22,836 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2020-09-24 21:42:23,263 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2020-09-24 21:42:23,443 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2020-09-24 21:42:24,352 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-09-24 21:42:24,786 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-09-24 21:42:27,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:27,131 INFO L93 Difference]: Finished difference Result 1860 states and 2652 transitions. [2020-09-24 21:42:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-09-24 21:42:27,140 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 121 [2020-09-24 21:42:27,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:27,176 INFO L225 Difference]: With dead ends: 1860 [2020-09-24 21:42:27,177 INFO L226 Difference]: Without dead ends: 1230 [2020-09-24 21:42:27,187 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=469, Invalid=1171, Unknown=0, NotChecked=0, Total=1640 [2020-09-24 21:42:27,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2020-09-24 21:42:27,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1070. [2020-09-24 21:42:27,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2020-09-24 21:42:27,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1287 transitions. [2020-09-24 21:42:27,315 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1287 transitions. Word has length 121 [2020-09-24 21:42:27,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:27,316 INFO L479 AbstractCegarLoop]: Abstraction has 1070 states and 1287 transitions. [2020-09-24 21:42:27,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 21:42:27,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1287 transitions. [2020-09-24 21:42:27,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 21:42:27,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:27,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:42:27,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:42:27,329 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:27,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:27,330 INFO L82 PathProgramCache]: Analyzing trace with hash -587204584, now seen corresponding path program 1 times [2020-09-24 21:42:27,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:27,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101128940] [2020-09-24 21:42:27,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:27,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:27,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:27,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:28,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:29,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:29,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:30,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:31,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:32,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:32,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-24 21:42:32,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:42:32,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 21:42:32,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:32,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:42:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:42:32,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 21:42:32,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:33,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:33,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:33,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:33,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:33,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:33,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 21:42:33,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:33,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:42:33,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:33,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:33,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:33,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:42:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:33,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:33,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:33,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:42:33,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:33,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 21:42:33,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:33,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:42:33,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:42:33,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:42:33,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101128940] [2020-09-24 21:42:33,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:42:33,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 21:42:33,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774938091] [2020-09-24 21:42:33,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:42:33,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:33,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:42:33,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:42:33,636 INFO L87 Difference]: Start difference. First operand 1070 states and 1287 transitions. Second operand 19 states. [2020-09-24 21:42:34,462 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-24 21:42:34,695 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-24 21:42:35,171 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-09-24 21:42:35,443 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2020-09-24 21:42:35,646 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-24 21:42:36,169 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-09-24 21:42:36,440 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2020-09-24 21:42:36,861 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-24 21:42:37,267 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2020-09-24 21:42:37,573 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-24 21:42:38,357 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-09-24 21:42:38,982 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2020-09-24 21:42:39,385 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-09-24 21:42:40,265 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2020-09-24 21:42:40,857 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2020-09-24 21:42:41,290 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2020-09-24 21:42:41,707 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 67 [2020-09-24 21:42:42,715 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-09-24 21:42:43,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:43,632 INFO L93 Difference]: Finished difference Result 4085 states and 5461 transitions. [2020-09-24 21:42:43,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-24 21:42:43,632 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 143 [2020-09-24 21:42:43,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:43,673 INFO L225 Difference]: With dead ends: 4085 [2020-09-24 21:42:43,673 INFO L226 Difference]: Without dead ends: 3095 [2020-09-24 21:42:43,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=721, Invalid=1829, Unknown=0, NotChecked=0, Total=2550 [2020-09-24 21:42:43,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2020-09-24 21:42:43,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 3021. [2020-09-24 21:42:43,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3021 states. [2020-09-24 21:42:43,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3021 states to 3021 states and 3668 transitions. [2020-09-24 21:42:43,829 INFO L78 Accepts]: Start accepts. Automaton has 3021 states and 3668 transitions. Word has length 143 [2020-09-24 21:42:43,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:43,830 INFO L479 AbstractCegarLoop]: Abstraction has 3021 states and 3668 transitions. [2020-09-24 21:42:43,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 21:42:43,831 INFO L276 IsEmpty]: Start isEmpty. Operand 3021 states and 3668 transitions. [2020-09-24 21:42:43,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 21:42:43,847 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:43,847 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:42:43,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:42:43,848 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:43,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:43,848 INFO L82 PathProgramCache]: Analyzing trace with hash 332571277, now seen corresponding path program 1 times [2020-09-24 21:42:43,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:43,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436627015] [2020-09-24 21:42:43,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:43,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:44,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:44,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:44,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:44,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:44,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:47,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:47,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:47,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:48,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:48,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:48,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:48,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-24 21:42:48,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:42:48,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-24 21:42:48,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:48,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:42:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:42:48,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 21:42:48,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:49,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:42:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:49,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:49,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:49,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:42:49,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:42:49,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 21:42:49,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:42:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:42:49,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:42:49,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:42:49,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:42:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:49,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:49,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:49,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:49,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:42:49,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:42:49,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 21:42:49,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:49,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:42:49,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:49,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:42:49,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:49,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 21:42:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:49,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:49,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:49,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:42:49,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 21:42:49,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:42:49,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 21:42:49,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:42:49,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:42:49,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:42:49,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:42:49,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:42:49,678 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 21:42:49,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436627015] [2020-09-24 21:42:49,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:42:49,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:42:49,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491871618] [2020-09-24 21:42:49,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:42:49,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:42:49,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:42:49,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:42:49,682 INFO L87 Difference]: Start difference. First operand 3021 states and 3668 transitions. Second operand 13 states. [2020-09-24 21:42:50,520 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2020-09-24 21:42:50,980 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-09-24 21:42:52,833 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2020-09-24 21:42:55,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:42:55,871 INFO L93 Difference]: Finished difference Result 8657 states and 11459 transitions. [2020-09-24 21:42:55,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 21:42:55,873 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 156 [2020-09-24 21:42:55,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:42:55,909 INFO L225 Difference]: With dead ends: 8657 [2020-09-24 21:42:55,909 INFO L226 Difference]: Without dead ends: 5363 [2020-09-24 21:42:55,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=265, Invalid=547, Unknown=0, NotChecked=0, Total=812 [2020-09-24 21:42:55,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5363 states. [2020-09-24 21:42:56,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5363 to 4869. [2020-09-24 21:42:56,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4869 states. [2020-09-24 21:42:56,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4869 states to 4869 states and 6010 transitions. [2020-09-24 21:42:56,082 INFO L78 Accepts]: Start accepts. Automaton has 4869 states and 6010 transitions. Word has length 156 [2020-09-24 21:42:56,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:42:56,082 INFO L479 AbstractCegarLoop]: Abstraction has 4869 states and 6010 transitions. [2020-09-24 21:42:56,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:42:56,082 INFO L276 IsEmpty]: Start isEmpty. Operand 4869 states and 6010 transitions. [2020-09-24 21:42:56,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-24 21:42:56,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:42:56,096 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:42:56,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:42:56,097 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:42:56,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:42:56,097 INFO L82 PathProgramCache]: Analyzing trace with hash -139989569, now seen corresponding path program 1 times [2020-09-24 21:42:56,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:42:56,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941808100] [2020-09-24 21:42:56,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:42:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:42:56,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:56,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:56,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:56,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:56,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:57,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:59,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:42:59,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:00,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:01,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:01,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-24 21:43:01,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:43:01,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 21:43:01,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:01,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:43:01,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:43:01,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-09-24 21:43:01,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:43:01,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:43:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:01,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:01,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:01,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:43:01,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:43:01,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 21:43:01,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:01,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:43:01,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:43:01,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 21:43:01,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:43:01,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:43:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:01,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:01,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:43:01,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:43:01,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:43:01,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:43:01,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 21:43:01,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:43:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:43:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:43:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:43:01,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:43:01,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 21:43:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:43:01,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking...