/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:28:46,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:28:46,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:28:46,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:28:46,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:28:46,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:28:46,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:28:46,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:28:46,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:28:46,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:28:46,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:28:46,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:28:46,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:28:46,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:28:46,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:28:46,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:28:46,412 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:28:46,415 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:28:46,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:28:46,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:28:46,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:28:46,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:28:46,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:28:46,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:28:46,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:28:46,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:28:46,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:28:46,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:28:46,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:28:46,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:28:46,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:28:46,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:28:46,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:28:46,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:28:46,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:28:46,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:28:46,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:28:46,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:28:46,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:28:46,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:28:46,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:28:46,453 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:28:46,479 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:28:46,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:28:46,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:28:46,481 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:28:46,481 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:28:46,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:28:46,482 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:28:46,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:28:46,482 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:28:46,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:28:46,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:28:46,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:28:46,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:28:46,483 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:28:46,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:28:46,483 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:28:46,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:28:46,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:28:46,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:28:46,484 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:28:46,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:28:46,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:46,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:28:46,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:28:46,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:28:46,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:28:46,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:28:46,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:28:46,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:28:46,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:28:47,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:28:47,021 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:28:47,025 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:28:47,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:28:47,028 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:28:47,029 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-09-25 13:28:47,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/106b52a78/960eb34b72684e8da3732fb070455f89/FLAGb31db64a7 [2020-09-25 13:28:47,811 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:28:47,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-09-25 13:28:47,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/106b52a78/960eb34b72684e8da3732fb070455f89/FLAGb31db64a7 [2020-09-25 13:28:48,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/106b52a78/960eb34b72684e8da3732fb070455f89 [2020-09-25 13:28:48,051 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:28:48,058 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:28:48,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:48,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:28:48,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:28:48,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:48" (1/1) ... [2020-09-25 13:28:48,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a7d2fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:48, skipping insertion in model container [2020-09-25 13:28:48,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:48" (1/1) ... [2020-09-25 13:28:48,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:28:48,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:28:48,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:48,780 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:28:48,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:48,965 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:28:48,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:48 WrapperNode [2020-09-25 13:28:48,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:48,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:28:48,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:28:48,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:28:48,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:48" (1/1) ... [2020-09-25 13:28:48,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:48" (1/1) ... [2020-09-25 13:28:49,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:48" (1/1) ... [2020-09-25 13:28:49,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:48" (1/1) ... [2020-09-25 13:28:49,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:48" (1/1) ... [2020-09-25 13:28:49,130 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:48" (1/1) ... [2020-09-25 13:28:49,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:48" (1/1) ... [2020-09-25 13:28:49,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:28:49,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:28:49,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:28:49,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:28:49,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:49,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:28:49,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:28:49,243 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:28:49,243 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:28:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:28:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:28:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:28:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:28:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:28:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:28:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:28:50,628 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:28:50,629 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:28:50,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:50 BoogieIcfgContainer [2020-09-25 13:28:50,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:28:50,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:28:50,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:28:50,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:28:50,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:28:48" (1/3) ... [2020-09-25 13:28:50,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bec5c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:50, skipping insertion in model container [2020-09-25 13:28:50,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:48" (2/3) ... [2020-09-25 13:28:50,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bec5c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:28:50, skipping insertion in model container [2020-09-25 13:28:50,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:28:50" (3/3) ... [2020-09-25 13:28:50,658 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label07.c [2020-09-25 13:28:50,671 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:28:50,688 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:28:50,712 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:28:50,760 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:28:50,760 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:28:50,760 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:28:50,760 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:28:50,761 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:28:50,761 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:28:50,761 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:28:50,761 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:28:50,793 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:28:50,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 13:28:50,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:50,817 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] [2020-09-25 13:28:50,817 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:50,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:50,825 INFO L82 PathProgramCache]: Analyzing trace with hash 1257233759, now seen corresponding path program 1 times [2020-09-25 13:28:50,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:50,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166809490] [2020-09-25 13:28:50,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:51,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:51,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:52,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:52,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:55,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:56,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:56,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-09-25 13:28:56,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:28:56,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 13:28:56,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:56,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:56,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:28:56,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:28:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 13:28:56,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:28:56,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:28:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:56,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:56,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:28:56,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:28:56,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:28:56,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 13:28:56,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:28:56,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:28:56,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:28:56,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:28:56,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:28:56,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:28:56,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:28:56,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166809490] [2020-09-25 13:28:56,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:28:56,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:28:56,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731864892] [2020-09-25 13:28:56,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:28:56,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:28:56,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:28:56,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:28:56,638 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 13:28:58,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:28:58,804 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 13:28:58,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:28:58,807 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-09-25 13:28:58,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:28:58,839 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 13:28:58,840 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 13:28:58,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:28:58,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 13:28:58,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 13:28:58,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 13:28:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 13:28:59,004 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 132 [2020-09-25 13:28:59,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:28:59,005 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 13:28:59,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:28:59,006 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 13:28:59,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 13:28:59,014 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:28:59,015 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:28:59,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:28:59,016 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:28:59,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:28:59,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1159952749, now seen corresponding path program 1 times [2020-09-25 13:28:59,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:28:59,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360444744] [2020-09-25 13:28:59,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:28:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:28:59,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:59,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:28:59,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:00,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:03,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:04,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:04,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 13:29:04,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:29:04,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 13:29:04,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:04,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:04,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:29:04,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:29:04,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 13:29:04,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:04,799 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2020-09-25 13:29:04,956 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38 [2020-09-25 13:29:05,127 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 36 [2020-09-25 13:29:05,284 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 34 [2020-09-25 13:29:05,464 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 32 [2020-09-25 13:29:05,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:05,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:05,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:05,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:05,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:05,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 13:29:05,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:05,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:29:05,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:05,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:05,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:05,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:05,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:05,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:29:05,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:29:05,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-25 13:29:05,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:05,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:05,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:29:05,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:05,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:29:05,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:06,117 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:06,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360444744] [2020-09-25 13:29:06,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:06,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 13:29:06,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141317489] [2020-09-25 13:29:06,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 13:29:06,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:06,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 13:29:06,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-09-25 13:29:06,126 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 20 states. [2020-09-25 13:29:07,290 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-25 13:29:07,607 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-09-25 13:29:07,934 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 83 [2020-09-25 13:29:08,281 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-09-25 13:29:08,622 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 90 [2020-09-25 13:29:09,275 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2020-09-25 13:29:09,703 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2020-09-25 13:29:09,886 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2020-09-25 13:29:10,661 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-09-25 13:29:11,467 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2020-09-25 13:29:11,775 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 38 [2020-09-25 13:29:12,157 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-09-25 13:29:12,509 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2020-09-25 13:29:13,300 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-09-25 13:29:13,944 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2020-09-25 13:29:14,390 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-09-25 13:29:14,997 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-25 13:29:15,698 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-09-25 13:29:16,445 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-09-25 13:29:17,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:17,559 INFO L93 Difference]: Finished difference Result 1968 states and 2591 transitions. [2020-09-25 13:29:17,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-25 13:29:17,560 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 154 [2020-09-25 13:29:17,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:17,570 INFO L225 Difference]: With dead ends: 1968 [2020-09-25 13:29:17,570 INFO L226 Difference]: Without dead ends: 1389 [2020-09-25 13:29:17,576 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=872, Invalid=2208, Unknown=0, NotChecked=0, Total=3080 [2020-09-25 13:29:17,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2020-09-25 13:29:17,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1280. [2020-09-25 13:29:17,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1280 states. [2020-09-25 13:29:17,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1533 transitions. [2020-09-25 13:29:17,626 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1533 transitions. Word has length 154 [2020-09-25 13:29:17,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:17,627 INFO L479 AbstractCegarLoop]: Abstraction has 1280 states and 1533 transitions. [2020-09-25 13:29:17,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 13:29:17,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1533 transitions. [2020-09-25 13:29:17,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 13:29:17,634 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:17,634 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:17,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:29:17,635 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:17,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:17,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1274964758, now seen corresponding path program 1 times [2020-09-25 13:29:17,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:17,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322340343] [2020-09-25 13:29:17,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:17,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:17,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:17,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:19,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:19,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:20,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:20,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:21,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:22,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:22,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 13:29:22,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:29:22,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 13:29:22,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:22,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:22,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:22,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 13:29:22,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 13:29:22,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:22,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:22,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:22,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:22,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:22,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:22,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:22,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:29:22,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:22,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:22,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:22,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:22,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:22,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:22,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:22,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:22,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:29:22,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:22,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 13:29:22,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:22,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:22,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:22,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:22,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:29:22,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:29:22,988 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:22,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322340343] [2020-09-25 13:29:22,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:22,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:22,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456957156] [2020-09-25 13:29:22,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:22,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:22,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:22,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:22,991 INFO L87 Difference]: Start difference. First operand 1280 states and 1533 transitions. Second operand 5 states. [2020-09-25 13:29:24,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:24,956 INFO L93 Difference]: Finished difference Result 2998 states and 3728 transitions. [2020-09-25 13:29:24,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:24,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 13:29:24,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:24,983 INFO L225 Difference]: With dead ends: 2998 [2020-09-25 13:29:24,983 INFO L226 Difference]: Without dead ends: 1742 [2020-09-25 13:29:24,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:29:24,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2020-09-25 13:29:25,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1709. [2020-09-25 13:29:25,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1709 states. [2020-09-25 13:29:25,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2102 transitions. [2020-09-25 13:29:25,077 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2102 transitions. Word has length 161 [2020-09-25 13:29:25,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:25,079 INFO L479 AbstractCegarLoop]: Abstraction has 1709 states and 2102 transitions. [2020-09-25 13:29:25,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:25,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2102 transitions. [2020-09-25 13:29:25,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 13:29:25,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:25,089 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:25,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:29:25,090 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:25,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:25,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1406452310, now seen corresponding path program 1 times [2020-09-25 13:29:25,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:25,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887320711] [2020-09-25 13:29:25,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:25,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:25,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:25,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:25,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:25,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:27,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:30,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:30,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-09-25 13:29:30,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:29:30,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 13:29:30,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:30,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:30,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:29:30,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 13:29:30,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 13:29:30,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:30,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:30,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:30,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:30,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:30,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:30,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:30,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:29:30,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:30,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:30,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:30,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:30,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:29:30,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:30,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:30,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:30,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:30,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:30,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:30,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:29:30,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 13:29:30,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:30,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:30,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:30,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:29:30,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:29:30,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:30,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:29:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:30,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:30,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:30,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:29:30,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 13:29:30,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:30,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:30,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:30,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:29:30,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:29:30,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:30,558 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 43 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 13:29:30,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887320711] [2020-09-25 13:29:30,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:30,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:29:30,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089998867] [2020-09-25 13:29:30,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:29:30,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:30,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:29:30,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:29:30,563 INFO L87 Difference]: Start difference. First operand 1709 states and 2102 transitions. Second operand 8 states. [2020-09-25 13:29:32,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:32,921 INFO L93 Difference]: Finished difference Result 3955 states and 5033 transitions. [2020-09-25 13:29:32,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:29:32,922 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 186 [2020-09-25 13:29:32,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:32,940 INFO L225 Difference]: With dead ends: 3955 [2020-09-25 13:29:32,941 INFO L226 Difference]: Without dead ends: 2270 [2020-09-25 13:29:32,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:29:32,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2020-09-25 13:29:33,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 2185. [2020-09-25 13:29:33,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2185 states. [2020-09-25 13:29:33,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 2739 transitions. [2020-09-25 13:29:33,054 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 2739 transitions. Word has length 186 [2020-09-25 13:29:33,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:33,054 INFO L479 AbstractCegarLoop]: Abstraction has 2185 states and 2739 transitions. [2020-09-25 13:29:33,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:29:33,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 2739 transitions. [2020-09-25 13:29:33,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 13:29:33,068 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:33,068 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2020-09-25 13:29:33,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:29:33,069 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:33,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:33,069 INFO L82 PathProgramCache]: Analyzing trace with hash -269597623, now seen corresponding path program 1 times [2020-09-25 13:29:33,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:33,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237386357] [2020-09-25 13:29:33,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:33,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:33,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:33,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:33,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:34,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:34,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:35,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:35,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:35,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:35,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking...