/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=BIGGEST --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/Problem01_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:30:44,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:30:44,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:30:44,211 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:30:44,212 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:30:44,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:30:44,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:30:44,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:30:44,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:30:44,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:30:44,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:30:44,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:30:44,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:30:44,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:30:44,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:30:44,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:30:44,248 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:30:44,249 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:30:44,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:30:44,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:30:44,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:30:44,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:30:44,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:30:44,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:30:44,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:30:44,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:30:44,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:30:44,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:30:44,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:30:44,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:30:44,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:30:44,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:30:44,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:30:44,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:30:44,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:30:44,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:30:44,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:30:44,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:30:44,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:30:44,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:30:44,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:30:44,285 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 20:30:44,336 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:30:44,336 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:30:44,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:30:44,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:30:44,339 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:30:44,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:30:44,340 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:30:44,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:30:44,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:30:44,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:30:44,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:30:44,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:30:44,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:30:44,343 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:30:44,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:30:44,343 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:30:44,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:30:44,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:30:44,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:30:44,344 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:30:44,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:30:44,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:30:44,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:30:44,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:30:44,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:30:44,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:30:44,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:30:44,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:30:44,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:30:44,346 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:30:44,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:30:44,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:30:44,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:30:44,814 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:30:44,814 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:30:44,815 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-09-24 20:30:44,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/936611faa/cfa273a05e1b4aa69bc30c5ecf7f54c5/FLAGbdbbee5dc [2020-09-24 20:30:45,551 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:30:45,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-09-24 20:30:45,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/936611faa/cfa273a05e1b4aa69bc30c5ecf7f54c5/FLAGbdbbee5dc [2020-09-24 20:30:45,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/936611faa/cfa273a05e1b4aa69bc30c5ecf7f54c5 [2020-09-24 20:30:45,821 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:30:45,827 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:30:45,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:30:45,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:30:45,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:30:45,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:30:45" (1/1) ... [2020-09-24 20:30:45,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d876c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:45, skipping insertion in model container [2020-09-24 20:30:45,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:30:45" (1/1) ... [2020-09-24 20:30:45,849 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:30:45,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:30:46,393 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:30:46,410 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:30:46,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:30:46,712 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:30:46,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46 WrapperNode [2020-09-24 20:30:46,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:30:46,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:30:46,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:30:46,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:30:46,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46" (1/1) ... [2020-09-24 20:30:46,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46" (1/1) ... [2020-09-24 20:30:46,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46" (1/1) ... [2020-09-24 20:30:46,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46" (1/1) ... [2020-09-24 20:30:46,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46" (1/1) ... [2020-09-24 20:30:46,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46" (1/1) ... [2020-09-24 20:30:46,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46" (1/1) ... [2020-09-24 20:30:46,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:30:46,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:30:46,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:30:46,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:30:46,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46" (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 20:30:46,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:30:46,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:30:46,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 20:30:46,947 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:30:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 20:30:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:30:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:30:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 20:30:46,947 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:30:46,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:30:46,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:30:48,369 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:30:48,369 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 20:30:48,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:30:48 BoogieIcfgContainer [2020-09-24 20:30:48,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:30:48,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:30:48,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:30:48,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:30:48,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:30:45" (1/3) ... [2020-09-24 20:30:48,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:30:48, skipping insertion in model container [2020-09-24 20:30:48,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:30:46" (2/3) ... [2020-09-24 20:30:48,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ca7549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:30:48, skipping insertion in model container [2020-09-24 20:30:48,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:30:48" (3/3) ... [2020-09-24 20:30:48,390 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label10.c [2020-09-24 20:30:48,403 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:30:48,415 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:30:48,439 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:30:48,479 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:30:48,479 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:30:48,480 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:30:48,480 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:30:48,480 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:30:48,480 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:30:48,480 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:30:48,480 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:30:48,515 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 20:30:48,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-24 20:30:48,539 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:30:48,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:30:48,542 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:30:48,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:30:48,550 INFO L82 PathProgramCache]: Analyzing trace with hash 346455735, now seen corresponding path program 1 times [2020-09-24 20:30:48,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:30:48,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859035075] [2020-09-24 20:30:48,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:30:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:30:48,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:49,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:50,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:50,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:52,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:30:53,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:30:53,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-24 20:30:53,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:30:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 20:30:53,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:30:53,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-09-24 20:30:53,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:30:53,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 20:30:53,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:30:55,032 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2020-09-24 20:30:55,364 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 51 [2020-09-24 20:30:55,740 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2020-09-24 20:30:56,211 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2020-09-24 20:30:56,736 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2020-09-24 20:30:57,215 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2020-09-24 20:30:57,683 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 55 [2020-09-24 20:30:58,175 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 54 [2020-09-24 20:30:58,567 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56 [2020-09-24 20:30:59,141 WARN L193 SmtUtils]: Spent 500.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 56 [2020-09-24 20:30:59,717 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 56 [2020-09-24 20:31:00,182 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2020-09-24 20:31:00,638 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 60 [2020-09-24 20:31:01,098 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2020-09-24 20:31:01,609 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 51 [2020-09-24 20:31:02,085 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 55 [2020-09-24 20:31:02,600 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 51 [2020-09-24 20:31:02,969 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 49 [2020-09-24 20:31:03,434 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 41 [2020-09-24 20:31:03,737 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 41 [2020-09-24 20:31:04,023 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 36 [2020-09-24 20:31:04,272 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 35 [2020-09-24 20:31:04,469 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 24 [2020-09-24 20:31:04,677 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 27 [2020-09-24 20:31:04,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:31:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:31:04,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:31:04,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:31:04,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 20:31:04,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:31:04,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 20:31:04,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:31:04,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:31:04,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:31:04,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 20:31:04,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:31:05,395 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 20:31:05,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859035075] [2020-09-24 20:31:05,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:31:05,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2020-09-24 20:31:05,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408740142] [2020-09-24 20:31:05,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-09-24 20:31:05,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:31:05,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-09-24 20:31:05,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=810, Unknown=0, NotChecked=0, Total=1190 [2020-09-24 20:31:05,423 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 35 states. [2020-09-24 20:31:05,937 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-09-24 20:31:06,158 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-09-24 20:31:06,472 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102 [2020-09-24 20:31:06,844 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109 [2020-09-24 20:31:07,097 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2020-09-24 20:31:07,539 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 107 [2020-09-24 20:31:08,161 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 117 [2020-09-24 20:31:08,703 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 113 [2020-09-24 20:31:09,134 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-09-24 20:31:09,300 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-09-24 20:31:09,775 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 111 [2020-09-24 20:31:10,282 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 110 [2020-09-24 20:31:10,902 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 113 [2020-09-24 20:31:11,127 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-09-24 20:31:11,712 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-09-24 20:31:11,938 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-09-24 20:31:12,421 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-09-24 20:31:12,725 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-09-24 20:31:13,417 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 114 [2020-09-24 20:31:14,258 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 114 [2020-09-24 20:31:15,096 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 111 [2020-09-24 20:31:15,330 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-09-24 20:31:15,736 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 97 [2020-09-24 20:31:16,202 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102 [2020-09-24 20:31:16,685 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109 [2020-09-24 20:31:17,224 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 103 [2020-09-24 20:31:17,638 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 114 [2020-09-24 20:31:18,279 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2020-09-24 20:31:18,698 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 101 [2020-09-24 20:31:19,112 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 109 [2020-09-24 20:31:19,325 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-09-24 20:31:19,512 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2020-09-24 20:31:19,914 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 106 [2020-09-24 20:31:20,231 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:31:20,505 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-24 20:31:20,916 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:31:21,337 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2020-09-24 20:31:21,910 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-09-24 20:31:22,302 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 103 [2020-09-24 20:31:22,586 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-24 20:31:23,022 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 107 [2020-09-24 20:31:23,173 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-09-24 20:31:23,621 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102 [2020-09-24 20:31:23,957 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 95 [2020-09-24 20:31:24,285 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-09-24 20:31:24,635 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-09-24 20:31:25,196 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102 [2020-09-24 20:31:25,393 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-24 20:31:25,742 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 100 [2020-09-24 20:31:25,962 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-09-24 20:31:26,415 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-09-24 20:31:26,812 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-09-24 20:31:27,041 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-24 20:31:27,423 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2020-09-24 20:31:27,779 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:31:27,956 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-24 20:31:28,195 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-09-24 20:31:28,694 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102 [2020-09-24 20:31:28,969 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-09-24 20:31:29,338 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-09-24 20:31:29,958 WARN L193 SmtUtils]: Spent 502.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-09-24 20:31:30,904 WARN L193 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 104 [2020-09-24 20:31:31,219 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96 [2020-09-24 20:31:31,624 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-09-24 20:31:32,114 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-09-24 20:31:32,513 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-09-24 20:31:33,530 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 101 [2020-09-24 20:31:33,829 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-09-24 20:31:34,130 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-09-24 20:31:34,372 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-09-24 20:31:34,606 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-09-24 20:31:34,887 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-09-24 20:31:35,160 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-09-24 20:31:35,552 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-09-24 20:31:35,865 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-24 20:31:36,538 WARN L193 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115 [2020-09-24 20:31:36,913 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 104 [2020-09-24 20:31:37,320 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 99 [2020-09-24 20:31:38,035 WARN L193 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115 [2020-09-24 20:31:38,810 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 112 [2020-09-24 20:31:39,283 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2020-09-24 20:31:39,543 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-09-24 20:31:40,006 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 110 [2020-09-24 20:31:40,327 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-09-24 20:31:40,749 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-09-24 20:31:41,015 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-09-24 20:31:41,328 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-09-24 20:31:41,588 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-24 20:31:41,968 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-24 20:31:42,161 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-09-24 20:31:42,444 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-24 20:31:42,665 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-24 20:31:42,893 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-24 20:31:44,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:31:44,260 INFO L93 Difference]: Finished difference Result 1966 states and 2791 transitions. [2020-09-24 20:31:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-09-24 20:31:44,263 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 138 [2020-09-24 20:31:44,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:31:44,294 INFO L225 Difference]: With dead ends: 1966 [2020-09-24 20:31:44,294 INFO L226 Difference]: Without dead ends: 1347 [2020-09-24 20:31:44,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7128 ImplicationChecksByTransitivity, 41.1s TimeCoverageRelationStatistics Valid=5030, Invalid=14992, Unknown=0, NotChecked=0, Total=20022 [2020-09-24 20:31:44,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2020-09-24 20:31:44,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1006. [2020-09-24 20:31:44,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1006 states. [2020-09-24 20:31:44,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1200 transitions. [2020-09-24 20:31:44,464 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1200 transitions. Word has length 138 [2020-09-24 20:31:44,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:31:44,465 INFO L479 AbstractCegarLoop]: Abstraction has 1006 states and 1200 transitions. [2020-09-24 20:31:44,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-09-24 20:31:44,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1200 transitions. [2020-09-24 20:31:44,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-24 20:31:44,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:31:44,476 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:31:44,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:31:44,476 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:31:44,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:31:44,477 INFO L82 PathProgramCache]: Analyzing trace with hash -993304122, now seen corresponding path program 1 times [2020-09-24 20:31:44,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:31:44,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874022766] [2020-09-24 20:31:44,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:31:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:31:44,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:31:44,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:31:44,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:31:44,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking...