/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=0.2 --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_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:14:18,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:14:18,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:14:18,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:14:18,908 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:14:18,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:14:18,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:14:18,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:14:18,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:14:18,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:14:18,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:14:18,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:14:18,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:14:18,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:14:18,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:14:18,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:14:18,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:14:18,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:14:18,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:14:18,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:14:18,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:14:18,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:14:18,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:14:18,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:14:18,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:14:18,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:14:18,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:14:18,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:14:18,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:14:18,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:14:18,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:14:18,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:14:18,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:14:18,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:14:18,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:14:18,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:14:18,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:14:18,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:14:18,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:14:18,982 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:14:18,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:14:18,984 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 11:14:19,035 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:14:19,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:14:19,038 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:14:19,038 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:14:19,038 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:14:19,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:14:19,039 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:14:19,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:14:19,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:14:19,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:14:19,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:14:19,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:14:19,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:14:19,041 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:14:19,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:14:19,042 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:14:19,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:14:19,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:14:19,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:14:19,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:14:19,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:14:19,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:14:19,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:14:19,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:14:19,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:14:19,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:14:19,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:14:19,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:14:19,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:14:19,045 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:14:19,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:14:19,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:14:19,504 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:14:19,505 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:14:19,506 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:14:19,507 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-09-25 11:14:19,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/777907254/aa00f4e0b9cc4b0f9a5bc8a792830c5e/FLAG5168cc6f6 [2020-09-25 11:14:20,205 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:14:20,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label41.c [2020-09-25 11:14:20,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/777907254/aa00f4e0b9cc4b0f9a5bc8a792830c5e/FLAG5168cc6f6 [2020-09-25 11:14:20,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/777907254/aa00f4e0b9cc4b0f9a5bc8a792830c5e [2020-09-25 11:14:20,452 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:14:20,459 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:14:20,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:14:20,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:14:20,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:14:20,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:14:20" (1/1) ... [2020-09-25 11:14:20,475 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12391971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:20, skipping insertion in model container [2020-09-25 11:14:20,475 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:14:20" (1/1) ... [2020-09-25 11:14:20,485 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:14:20,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:14:21,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:14:21,064 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:14:21,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:14:21,380 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:14:21,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:21 WrapperNode [2020-09-25 11:14:21,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:14:21,384 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:14:21,384 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:14:21,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:14:21,407 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:21" (1/1) ... [2020-09-25 11:14:21,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:21" (1/1) ... [2020-09-25 11:14:21,451 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:21" (1/1) ... [2020-09-25 11:14:21,452 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:21" (1/1) ... [2020-09-25 11:14:21,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:21" (1/1) ... [2020-09-25 11:14:21,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:21" (1/1) ... [2020-09-25 11:14:21,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:21" (1/1) ... [2020-09-25 11:14:21,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:14:21,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:14:21,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:14:21,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:14:21,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:21" (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 11:14:21,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:14:21,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:14:21,639 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:14:21,639 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:14:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:14:21,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:14:21,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:14:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:14:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:14:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:14:21,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:14:23,015 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:14:23,016 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:14:23,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:14:23 BoogieIcfgContainer [2020-09-25 11:14:23,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:14:23,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:14:23,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:14:23,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:14:23,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:14:20" (1/3) ... [2020-09-25 11:14:23,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2543eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:14:23, skipping insertion in model container [2020-09-25 11:14:23,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:21" (2/3) ... [2020-09-25 11:14:23,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2543eee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:14:23, skipping insertion in model container [2020-09-25 11:14:23,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:14:23" (3/3) ... [2020-09-25 11:14:23,037 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label41.c [2020-09-25 11:14:23,051 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:14:23,063 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:14:23,087 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:14:23,124 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:14:23,124 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:14:23,125 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:14:23,125 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:14:23,125 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:14:23,125 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:14:23,125 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:14:23,125 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:14:23,166 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 11:14:23,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-09-25 11:14:23,187 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:23,189 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] [2020-09-25 11:14:23,189 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:23,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:23,198 INFO L82 PathProgramCache]: Analyzing trace with hash -672460611, now seen corresponding path program 1 times [2020-09-25 11:14:23,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:23,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457045145] [2020-09-25 11:14:23,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:23,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:23,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:24,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:25,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:25,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:27,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:28,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:28,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:28,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-09-25 11:14:28,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:14:28,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 11:14:28,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:28,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:14:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 11:14:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 11:14:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:14:28,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:28,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:28,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:28,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:28,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:28,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:28,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 11:14:28,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:28,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:28,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:28,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:28,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 11:14:28,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:28,788 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 11:14:28,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457045145] [2020-09-25 11:14:28,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:14:28,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:14:28,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326867523] [2020-09-25 11:14:28,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:14:28,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:28,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:14:28,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:14:28,824 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 11:14:31,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:31,344 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 11:14:31,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:14:31,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2020-09-25 11:14:31,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:31,382 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 11:14:31,382 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 11:14:31,395 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 11:14:31,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 11:14:31,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 11:14:31,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 11:14:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 11:14:31,569 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 113 [2020-09-25 11:14:31,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:31,570 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 11:14:31,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:14:31,571 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 11:14:31,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 11:14:31,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:31,584 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 11:14:31,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:14:31,585 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:31,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:31,586 INFO L82 PathProgramCache]: Analyzing trace with hash 241463436, now seen corresponding path program 1 times [2020-09-25 11:14:31,586 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:31,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971018137] [2020-09-25 11:14:31,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:31,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:31,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:31,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:32,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:32,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:33,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:33,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 11:14:33,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:14:33,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2350 [2020-09-25 11:14:33,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:33,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:33,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:33,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 11:14:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 11:14:33,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:14:34,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:34,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:34,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:34,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:34,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:34,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:34,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:14:34,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:34,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:34,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:34,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:34,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:34,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:34,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:34,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:34,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:34,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:14:34,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:34,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 11:14:34,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:34,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:34,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:34,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:14:34,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:14:34,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971018137] [2020-09-25 11:14:34,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:34,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:14:34,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752690867] [2020-09-25 11:14:34,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:14:34,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:34,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:14:34,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:14:34,309 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 5 states. [2020-09-25 11:14:36,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:36,487 INFO L93 Difference]: Finished difference Result 1499 states and 1884 transitions. [2020-09-25 11:14:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:14:36,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-09-25 11:14:36,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:36,500 INFO L225 Difference]: With dead ends: 1499 [2020-09-25 11:14:36,500 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 11:14:36,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 11:14:36,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 11:14:36,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 748. [2020-09-25 11:14:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-09-25 11:14:36,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 899 transitions. [2020-09-25 11:14:36,542 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 899 transitions. Word has length 134 [2020-09-25 11:14:36,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:36,544 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 899 transitions. [2020-09-25 11:14:36,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:14:36,545 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 899 transitions. [2020-09-25 11:14:36,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 11:14:36,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:36,555 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 11:14:36,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:14:36,556 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:36,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:36,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1367635627, now seen corresponding path program 1 times [2020-09-25 11:14:36,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:36,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437040907] [2020-09-25 11:14:36,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:36,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:36,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:36,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:37,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:37,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:37,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:37,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:37,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:41,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:41,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 11:14:41,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:14:41,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:14:41,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:41,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:41,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:41,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 11:14:41,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 11:14:41,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:41,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:41,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:41,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:41,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:41,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:41,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:14:41,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:41,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:41,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:41,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:41,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:41,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:41,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:41,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:41,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:41,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:14:41,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:41,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:14:41,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:41,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:41,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:41,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:14:41,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:41,901 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:14:41,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437040907] [2020-09-25 11:14:41,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:41,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:14:41,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136779330] [2020-09-25 11:14:41,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:14:41,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:41,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:14:41,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:14:41,906 INFO L87 Difference]: Start difference. First operand 748 states and 899 transitions. Second operand 5 states. [2020-09-25 11:14:44,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:44,007 INFO L93 Difference]: Finished difference Result 1957 states and 2447 transitions. [2020-09-25 11:14:44,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:14:44,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 138 [2020-09-25 11:14:44,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:44,015 INFO L225 Difference]: With dead ends: 1957 [2020-09-25 11:14:44,015 INFO L226 Difference]: Without dead ends: 1233 [2020-09-25 11:14:44,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 11:14:44,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-09-25 11:14:44,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1034. [2020-09-25 11:14:44,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2020-09-25 11:14:44,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1277 transitions. [2020-09-25 11:14:44,055 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1277 transitions. Word has length 138 [2020-09-25 11:14:44,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:44,056 INFO L479 AbstractCegarLoop]: Abstraction has 1034 states and 1277 transitions. [2020-09-25 11:14:44,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:14:44,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1277 transitions. [2020-09-25 11:14:44,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 11:14:44,061 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:44,061 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:14:44,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:14:44,062 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:44,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:44,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1140849621, now seen corresponding path program 1 times [2020-09-25 11:14:44,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:44,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122080096] [2020-09-25 11:14:44,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:44,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:44,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:44,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:44,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:45,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:47,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:47,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:47,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:48,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:49,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:49,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 11:14:49,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:14:49,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 11:14:49,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:49,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:14:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:14:49,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 11:14:49,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:49,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:49,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:49,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:49,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:49,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:49,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:14:49,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:49,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:49,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:49,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:49,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:14:49,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:49,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:49,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:49,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:49,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:49,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 11:14:49,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:14:49,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 11:14:49,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:49,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:49,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:49,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:14:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:14:49,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:14:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:14:49,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122080096] [2020-09-25 11:14:49,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:49,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:14:49,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233454430] [2020-09-25 11:14:49,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:14:49,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:49,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:14:49,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:14:49,553 INFO L87 Difference]: Start difference. First operand 1034 states and 1277 transitions. Second operand 6 states. [2020-09-25 11:14:51,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:51,527 INFO L93 Difference]: Finished difference Result 2836 states and 3687 transitions. [2020-09-25 11:14:51,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:14:51,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-09-25 11:14:51,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:51,549 INFO L225 Difference]: With dead ends: 2836 [2020-09-25 11:14:51,550 INFO L226 Difference]: Without dead ends: 1826 [2020-09-25 11:14:51,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:14:51,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1826 states. [2020-09-25 11:14:51,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1826 to 1753. [2020-09-25 11:14:51,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1753 states. [2020-09-25 11:14:51,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2182 transitions. [2020-09-25 11:14:51,663 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2182 transitions. Word has length 156 [2020-09-25 11:14:51,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:51,664 INFO L479 AbstractCegarLoop]: Abstraction has 1753 states and 2182 transitions. [2020-09-25 11:14:51,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:14:51,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2182 transitions. [2020-09-25 11:14:51,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 11:14:51,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:51,679 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:14:51,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:14:51,679 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:51,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:51,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1335946793, now seen corresponding path program 1 times [2020-09-25 11:14:51,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:51,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135450709] [2020-09-25 11:14:51,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:51,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:51,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:51,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:52,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:52,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:53,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:54,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:54,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:54,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:55,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:55,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:56,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:56,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 11:14:56,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:14:56,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:14:56,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:56,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:56,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:14:56,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 11:14:56,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-09-25 11:14:56,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:14:56,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:56,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:56,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:56,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:56,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:56,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:14:56,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:56,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:56,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:56,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:56,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 11:14:56,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:57,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:57,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:57,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:57,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:57,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:14:57,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:14:57,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 11:14:57,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:57,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:57,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:57,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:57,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 11:14:57,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:57,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 11:14:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:57,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:57,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:57,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:57,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 11:14:57,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:14:57,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 11:14:57,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:57,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:57,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:14:57,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:57,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:14:57,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:14:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 11:14:57,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135450709] [2020-09-25 11:14:57,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:57,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:14:57,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200001489] [2020-09-25 11:14:57,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:14:57,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:57,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:14:57,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:14:57,597 INFO L87 Difference]: Start difference. First operand 1753 states and 2182 transitions. Second operand 12 states. [2020-09-25 11:15:01,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:01,669 INFO L93 Difference]: Finished difference Result 4171 states and 5300 transitions. [2020-09-25 11:15:01,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 11:15:01,670 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 190 [2020-09-25 11:15:01,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:01,687 INFO L225 Difference]: With dead ends: 4171 [2020-09-25 11:15:01,687 INFO L226 Difference]: Without dead ends: 1741 [2020-09-25 11:15:01,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2020-09-25 11:15:01,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2020-09-25 11:15:01,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1295. [2020-09-25 11:15:01,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1295 states. [2020-09-25 11:15:01,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1512 transitions. [2020-09-25 11:15:01,758 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1512 transitions. Word has length 190 [2020-09-25 11:15:01,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:01,759 INFO L479 AbstractCegarLoop]: Abstraction has 1295 states and 1512 transitions. [2020-09-25 11:15:01,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:15:01,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1512 transitions. [2020-09-25 11:15:01,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 11:15:01,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:01,767 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:15:01,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:15:01,768 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:01,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:01,769 INFO L82 PathProgramCache]: Analyzing trace with hash 604576851, now seen corresponding path program 1 times [2020-09-25 11:15:01,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:01,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672811373] [2020-09-25 11:15:01,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:01,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:01,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:02,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:03,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:05,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:05,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 11:15:05,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:15:05,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3920 [2020-09-25 11:15:05,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:05,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-09-25 11:15:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-25 11:15:05,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:15:05,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:05,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:05,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:05,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:15:05,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:05,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:15:05,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:05,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:05,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:05,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:05,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:05,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:05,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:15:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:05,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:05,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:05,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:15:05,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:05,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:15:05,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:05,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:05,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:05,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:05,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:05,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:05,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 11:15:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:05,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:06,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:06,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 11:15:06,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:06,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 11:15:06,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:06,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:06,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:06,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:06,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 11:15:06,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:15:06,085 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 11:15:06,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672811373] [2020-09-25 11:15:06,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:06,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:15:06,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508474145] [2020-09-25 11:15:06,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:15:06,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:06,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:15:06,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:15:06,088 INFO L87 Difference]: Start difference. First operand 1295 states and 1512 transitions. Second operand 5 states. [2020-09-25 11:15:08,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:08,286 INFO L93 Difference]: Finished difference Result 3502 states and 4166 transitions. [2020-09-25 11:15:08,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:15:08,291 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-09-25 11:15:08,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:08,292 INFO L225 Difference]: With dead ends: 3502 [2020-09-25 11:15:08,292 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 11:15:08,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 2 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 11:15:08,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 11:15:08,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 11:15:08,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 11:15:08,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 11:15:08,305 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 197 [2020-09-25 11:15:08,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:08,307 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 11:15:08,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:15:08,307 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 11:15:08,307 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 11:15:08,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:15:08,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 11:15:08,609 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-09-25 11:15:08,838 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69