/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=SMALLEST --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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:20:37,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:20:37,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:20:37,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:20:37,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:20:37,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:20:37,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:20:37,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:20:37,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:20:37,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:20:37,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:20:37,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:20:37,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:20:37,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:20:37,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:20:37,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:20:37,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:20:37,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:20:37,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:20:37,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:20:37,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:20:37,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:20:37,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:20:37,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:20:38,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:20:38,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:20:38,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:20:38,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:20:38,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:20:38,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:20:38,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:20:38,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:20:38,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:20:38,015 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:20:38,016 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:20:38,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:20:38,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:20:38,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:20:38,018 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:20:38,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:20:38,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:20:38,021 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:20:38,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:20:38,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:20:38,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:20:38,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:20:38,088 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:20:38,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:20:38,088 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:20:38,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:20:38,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:20:38,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:20:38,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:20:38,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:20:38,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:20:38,090 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:20:38,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:20:38,090 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:20:38,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:20:38,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:20:38,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:20:38,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:20:38,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:20:38,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:20:38,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:20:38,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:20:38,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:20:38,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:20:38,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:20:38,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:20:38,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:20:38,095 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:20:38,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:20:38,557 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:20:38,562 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:20:38,565 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:20:38,566 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:20:38,568 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-24 18:20:38,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f9f1885d/e390d6f702f24566b879983412ad42d8/FLAG92bc40999 [2020-09-24 18:20:39,336 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:20:39,338 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-24 18:20:39,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f9f1885d/e390d6f702f24566b879983412ad42d8/FLAG92bc40999 [2020-09-24 18:20:39,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f9f1885d/e390d6f702f24566b879983412ad42d8 [2020-09-24 18:20:39,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:20:39,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:20:39,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:20:39,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:20:39,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:20:39,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:20:39" (1/1) ... [2020-09-24 18:20:39,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:39, skipping insertion in model container [2020-09-24 18:20:39,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:20:39" (1/1) ... [2020-09-24 18:20:39,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:20:39,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:20:40,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:20:40,190 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:20:40,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:20:40,449 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:20:40,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:40 WrapperNode [2020-09-24 18:20:40,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:20:40,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:20:40,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:20:40,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:20:40,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:40" (1/1) ... [2020-09-24 18:20:40,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:40" (1/1) ... [2020-09-24 18:20:40,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:40" (1/1) ... [2020-09-24 18:20:40,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:40" (1/1) ... [2020-09-24 18:20:40,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:40" (1/1) ... [2020-09-24 18:20:40,549 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:40" (1/1) ... [2020-09-24 18:20:40,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:40" (1/1) ... [2020-09-24 18:20:40,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:20:40,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:20:40,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:20:40,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:20:40,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:20:40,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:20:40,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:20:40,691 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:20:40,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:20:40,692 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:20:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:20:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:20:40,693 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:20:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:20:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:20:40,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:20:42,191 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:20:42,192 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:20:42,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:20:42 BoogieIcfgContainer [2020-09-24 18:20:42,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:20:42,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:20:42,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:20:42,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:20:42,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:20:39" (1/3) ... [2020-09-24 18:20:42,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ece744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:20:42, skipping insertion in model container [2020-09-24 18:20:42,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:20:40" (2/3) ... [2020-09-24 18:20:42,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ece744c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:20:42, skipping insertion in model container [2020-09-24 18:20:42,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:20:42" (3/3) ... [2020-09-24 18:20:42,212 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label54.c [2020-09-24 18:20:42,225 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:20:42,237 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:20:42,262 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:20:42,295 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:20:42,295 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:20:42,296 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:20:42,296 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:20:42,296 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:20:42,296 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:20:42,296 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:20:42,296 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:20:42,333 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:20:42,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-24 18:20:42,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:42,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:42,358 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:42,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:42,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1970187929, now seen corresponding path program 1 times [2020-09-24 18:20:42,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:42,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316023275] [2020-09-24 18:20:42,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:42,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:43,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:43,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:44,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:46,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:47,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:47,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:47,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-24 18:20:47,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:20:47,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 18:20:47,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:47,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:20:47,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 18:20:47,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-24 18:20:47,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:20:47,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:47,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:47,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:47,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:47,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:47,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 18:20:47,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:47,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:47,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:47,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:20:47,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:47,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:48,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316023275] [2020-09-24 18:20:48,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:20:48,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:20:48,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801897797] [2020-09-24 18:20:48,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:20:48,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:48,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:20:48,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:20:48,043 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 18:20:50,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:50,360 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-24 18:20:50,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:20:50,362 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-24 18:20:50,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:50,386 INFO L225 Difference]: With dead ends: 1212 [2020-09-24 18:20:50,386 INFO L226 Difference]: Without dead ends: 638 [2020-09-24 18:20:50,397 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 [2020-09-24 18:20:50,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-24 18:20:50,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-24 18:20:50,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 18:20:50,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-24 18:20:50,527 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 150 [2020-09-24 18:20:50,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:50,528 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-24 18:20:50,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:20:50,529 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-24 18:20:50,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-24 18:20:50,537 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:50,538 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:50,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:20:50,538 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:50,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:50,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1973679864, now seen corresponding path program 1 times [2020-09-24 18:20:50,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:50,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952633680] [2020-09-24 18:20:50,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:50,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:50,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:50,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:52,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:52,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:52,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:53,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:55,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:55,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-24 18:20:55,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:20:55,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-24 18:20:55,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:20:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:20:55,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:20:55,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:55,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:55,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:55,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:55,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:55,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:55,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 18:20:55,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:55,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:55,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:55,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:20:55,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:55,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:55,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:55,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:55,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:20:55,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:55,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 18:20:55,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:55,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:55,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:55,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:20:55,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:20:55,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952633680] [2020-09-24 18:20:55,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:20:55,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:20:55,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116814668] [2020-09-24 18:20:55,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:55,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:55,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:55,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:55,890 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-24 18:20:57,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:57,925 INFO L93 Difference]: Finished difference Result 1589 states and 1978 transitions. [2020-09-24 18:20:57,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:20:57,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-09-24 18:20:57,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:57,934 INFO L225 Difference]: With dead ends: 1589 [2020-09-24 18:20:57,934 INFO L226 Difference]: Without dead ends: 1010 [2020-09-24 18:20:57,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:20:57,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-09-24 18:20:57,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 962. [2020-09-24 18:20:57,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2020-09-24 18:20:57,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1158 transitions. [2020-09-24 18:20:57,997 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1158 transitions. Word has length 171 [2020-09-24 18:20:57,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:57,998 INFO L479 AbstractCegarLoop]: Abstraction has 962 states and 1158 transitions. [2020-09-24 18:20:57,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:57,998 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1158 transitions. [2020-09-24 18:20:58,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-24 18:20:58,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:58,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:20:58,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:20:58,006 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:58,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:58,007 INFO L82 PathProgramCache]: Analyzing trace with hash 996248242, now seen corresponding path program 1 times [2020-09-24 18:20:58,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:58,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087582509] [2020-09-24 18:20:58,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:58,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:58,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:58,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:01,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:01,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:01,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:03,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:03,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-24 18:21:03,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:21:03,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:21:03,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 18:21:03,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 18:21:03,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:03,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:03,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:03,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:03,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:03,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:03,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:03,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 18:21:03,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:03,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:03,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:03,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:03,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:03,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:03,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:03,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:03,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:03,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:21:03,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:03,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:21:03,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:03,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:21:03,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:03,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:21:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:03,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:03,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:03,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:21:03,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:03,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 18:21:03,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:03,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:03,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:03,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 18:21:03,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:21:03,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087582509] [2020-09-24 18:21:03,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:03,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:21:03,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381524882] [2020-09-24 18:21:03,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:21:03,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:03,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:21:03,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:21:03,435 INFO L87 Difference]: Start difference. First operand 962 states and 1158 transitions. Second operand 7 states. [2020-09-24 18:21:05,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:05,697 INFO L93 Difference]: Finished difference Result 2250 states and 2787 transitions. [2020-09-24 18:21:05,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 18:21:05,699 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-09-24 18:21:05,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:05,713 INFO L225 Difference]: With dead ends: 2250 [2020-09-24 18:21:05,713 INFO L226 Difference]: Without dead ends: 1312 [2020-09-24 18:21:05,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:21:05,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2020-09-24 18:21:05,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1115. [2020-09-24 18:21:05,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1115 states. [2020-09-24 18:21:05,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1370 transitions. [2020-09-24 18:21:05,775 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1370 transitions. Word has length 212 [2020-09-24 18:21:05,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:05,777 INFO L479 AbstractCegarLoop]: Abstraction has 1115 states and 1370 transitions. [2020-09-24 18:21:05,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:21:05,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1370 transitions. [2020-09-24 18:21:05,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-24 18:21:05,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:05,784 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, 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] [2020-09-24 18:21:05,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:21:05,792 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:05,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:05,793 INFO L82 PathProgramCache]: Analyzing trace with hash 19036305, now seen corresponding path program 1 times [2020-09-24 18:21:05,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:05,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347949272] [2020-09-24 18:21:05,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:05,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:05,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:06,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:07,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:07,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:07,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:07,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:07,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:08,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:08,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:10,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:10,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-09-24 18:21:10,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:21:10,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:21:10,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:10,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:21:10,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-24 18:21:10,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 18:21:10,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:10,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:10,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:10,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:10,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:10,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:10,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:21:10,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:10,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:10,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:10,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:11,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:11,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:11,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:11,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:21:11,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:11,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 18:21:11,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:21:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:11,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:21:11,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:21:11,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:21:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:11,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:11,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:11,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:21:11,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:11,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 18:21:11,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:11,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:11,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:21:11,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 18:21:11,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:11,343 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:21:11,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347949272] [2020-09-24 18:21:11,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:11,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:21:11,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073219888] [2020-09-24 18:21:11,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:21:11,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:11,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:21:11,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:21:11,353 INFO L87 Difference]: Start difference. First operand 1115 states and 1370 transitions. Second operand 8 states. [2020-09-24 18:21:11,925 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-24 18:21:14,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:14,642 INFO L93 Difference]: Finished difference Result 2980 states and 3749 transitions. [2020-09-24 18:21:14,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 18:21:14,643 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 219 [2020-09-24 18:21:14,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:14,656 INFO L225 Difference]: With dead ends: 2980 [2020-09-24 18:21:14,656 INFO L226 Difference]: Without dead ends: 1889 [2020-09-24 18:21:14,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:21:14,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2020-09-24 18:21:14,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1757. [2020-09-24 18:21:14,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1757 states. [2020-09-24 18:21:14,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 2141 transitions. [2020-09-24 18:21:14,737 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 2141 transitions. Word has length 219 [2020-09-24 18:21:14,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:14,739 INFO L479 AbstractCegarLoop]: Abstraction has 1757 states and 2141 transitions. [2020-09-24 18:21:14,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:21:14,739 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 2141 transitions. [2020-09-24 18:21:14,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-24 18:21:14,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:14,748 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:14,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:21:14,749 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:14,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:14,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1783992526, now seen corresponding path program 1 times [2020-09-24 18:21:14,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:14,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818223500] [2020-09-24 18:21:14,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:14,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:14,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:15,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:15,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:15,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:15,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:15,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:16,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:18,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:18,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:18,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:18,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:19,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:19,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:19,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:19,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-09-24 18:21:19,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-24 18:21:19,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:21:19,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:19,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:19,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-09-24 18:21:19,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-24 18:21:19,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:19,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:19,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:19,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:19,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:19,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:19,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:21:19,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:19,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:19,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:19,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:19,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:19,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:19,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:19,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:21:19,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:19,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:21:19,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:19,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:19,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:21:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:20,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:20,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:20,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 18:21:20,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:20,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-24 18:21:20,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:20,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 18:21:20,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 18:21:20,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818223500] [2020-09-24 18:21:20,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:20,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:20,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058149039] [2020-09-24 18:21:20,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:20,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:20,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:20,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:20,113 INFO L87 Difference]: Start difference. First operand 1757 states and 2141 transitions. Second operand 5 states. [2020-09-24 18:21:22,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:21:22,300 INFO L93 Difference]: Finished difference Result 3590 states and 4369 transitions. [2020-09-24 18:21:22,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:21:22,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 234 [2020-09-24 18:21:22,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:21:22,311 INFO L225 Difference]: With dead ends: 3590 [2020-09-24 18:21:22,311 INFO L226 Difference]: Without dead ends: 1857 [2020-09-24 18:21:22,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:21:22,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-09-24 18:21:22,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1610. [2020-09-24 18:21:22,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1610 states. [2020-09-24 18:21:22,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 1879 transitions. [2020-09-24 18:21:22,361 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 1879 transitions. Word has length 234 [2020-09-24 18:21:22,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:21:22,361 INFO L479 AbstractCegarLoop]: Abstraction has 1610 states and 1879 transitions. [2020-09-24 18:21:22,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:21:22,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 1879 transitions. [2020-09-24 18:21:22,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-24 18:21:22,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:21:22,370 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:21:22,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:21:22,370 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:21:22,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:21:22,371 INFO L82 PathProgramCache]: Analyzing trace with hash -2098605994, now seen corresponding path program 1 times [2020-09-24 18:21:22,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:21:22,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878246311] [2020-09-24 18:21:22,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:21:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:22,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:22,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:22,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:22,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:22,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:22,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:22,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:23,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:23,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:23,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:27,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:27,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-24 18:21:27,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:21:27,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 18:21:27,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:21:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-09-24 18:21:27,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 18:21:27,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:27,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:21:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:27,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:27,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:27,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:21:27,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:27,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:21:27,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:27,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:27,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:21:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:27,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:27,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:27,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:21:27,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:27,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:21:27,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:27,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:21:27,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:27,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:21:27,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:21:27,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:21:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:21:27,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:21:27,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:21:27,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 18:21:27,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:21:27,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 18:21:27,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:21:27,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:21:27,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:21:27,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 18:21:27,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:21:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 18:21:27,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878246311] [2020-09-24 18:21:27,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:21:27,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 18:21:27,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018296661] [2020-09-24 18:21:27,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:21:27,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:21:27,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:21:27,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:21:27,708 INFO L87 Difference]: Start difference. First operand 1610 states and 1879 transitions. Second operand 5 states.