/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=0.1 --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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:07:10,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:07:10,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:07:11,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:07:11,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:07:11,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:07:11,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:07:11,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:07:11,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:07:11,075 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:07:11,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:07:11,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:07:11,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:07:11,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:07:11,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:07:11,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:07:11,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:07:11,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:07:11,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:07:11,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:07:11,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:07:11,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:07:11,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:07:11,107 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:07:11,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:07:11,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:07:11,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:07:11,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:07:11,114 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:07:11,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:07:11,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:07:11,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:07:11,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:07:11,126 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:07:11,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:07:11,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:07:11,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:07:11,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:07:11,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:07:11,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:07:11,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:07:11,131 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 10:07:11,155 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:07:11,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:07:11,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:07:11,157 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:07:11,157 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:07:11,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:07:11,157 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:07:11,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:07:11,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:07:11,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:07:11,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:07:11,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:07:11,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:07:11,159 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:07:11,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:07:11,159 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:07:11,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:07:11,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:07:11,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:07:11,160 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:07:11,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:07:11,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:07:11,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:07:11,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:07:11,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:07:11,161 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:07:11,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:07:11,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:07:11,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:07:11,162 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:07:11,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:07:11,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:07:11,653 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:07:11,655 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:07:11,655 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:07:11,656 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-25 10:07:11,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ccee1b33/aa8cbeddb9ca4cfcb91c249e19f6a6c5/FLAG4dc8d4d59 [2020-09-25 10:07:12,374 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:07:12,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2020-09-25 10:07:12,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ccee1b33/aa8cbeddb9ca4cfcb91c249e19f6a6c5/FLAG4dc8d4d59 [2020-09-25 10:07:12,626 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9ccee1b33/aa8cbeddb9ca4cfcb91c249e19f6a6c5 [2020-09-25 10:07:12,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:07:12,650 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:07:12,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:07:12,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:07:12,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:07:12,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:07:12" (1/1) ... [2020-09-25 10:07:12,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2c32e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:12, skipping insertion in model container [2020-09-25 10:07:12,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:07:12" (1/1) ... [2020-09-25 10:07:12,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:07:12,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:07:13,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:07:13,179 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:07:13,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:07:13,461 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:07:13,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:13 WrapperNode [2020-09-25 10:07:13,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:07:13,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:07:13,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:07:13,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:07:13,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:13" (1/1) ... [2020-09-25 10:07:13,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:13" (1/1) ... [2020-09-25 10:07:13,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:13" (1/1) ... [2020-09-25 10:07:13,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:13" (1/1) ... [2020-09-25 10:07:13,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:13" (1/1) ... [2020-09-25 10:07:13,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:13" (1/1) ... [2020-09-25 10:07:13,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:13" (1/1) ... [2020-09-25 10:07:13,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:07:13,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:07:13,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:07:13,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:07:13,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:13" (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 10:07:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:07:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:07:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:07:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:07:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:07:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:07:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:07:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:07:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:07:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:07:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:07:14,962 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:07:14,962 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:07:14,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:07:14 BoogieIcfgContainer [2020-09-25 10:07:14,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:07:14,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:07:14,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:07:14,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:07:14,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:07:12" (1/3) ... [2020-09-25 10:07:14,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe95611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:07:14, skipping insertion in model container [2020-09-25 10:07:14,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:07:13" (2/3) ... [2020-09-25 10:07:14,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fe95611 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:07:14, skipping insertion in model container [2020-09-25 10:07:14,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:07:14" (3/3) ... [2020-09-25 10:07:14,984 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label44.c [2020-09-25 10:07:14,998 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:07:15,010 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:07:15,036 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:07:15,078 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:07:15,078 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:07:15,078 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:07:15,078 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:07:15,078 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:07:15,079 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:07:15,079 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:07:15,079 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:07:15,114 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:07:15,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 10:07:15,134 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:15,136 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] [2020-09-25 10:07:15,136 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:15,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:15,145 INFO L82 PathProgramCache]: Analyzing trace with hash 948138895, now seen corresponding path program 1 times [2020-09-25 10:07:15,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:15,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350103640] [2020-09-25 10:07:15,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:15,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:16,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:16,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:16,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:16,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:17,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:18,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:19,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:20,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:20,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 10:07:20,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:07:20,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:07:20,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:20,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:20,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:07:20,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:07:20,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 10:07:20,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:07:20,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:20,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:20,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:20,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:20,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:20,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 10:07:20,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:20,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:20,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:20,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:20,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:07:20,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:20,860 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 10:07:20,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350103640] [2020-09-25 10:07:20,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:07:20,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:07:20,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917524815] [2020-09-25 10:07:20,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:07:20,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:20,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:07:20,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:07:20,895 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 10:07:23,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:23,157 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-25 10:07:23,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:07:23,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-09-25 10:07:23,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:23,183 INFO L225 Difference]: With dead ends: 1235 [2020-09-25 10:07:23,184 INFO L226 Difference]: Without dead ends: 661 [2020-09-25 10:07:23,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 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 10:07:23,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-25 10:07:23,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-25 10:07:23,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-25 10:07:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-25 10:07:23,303 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 112 [2020-09-25 10:07:23,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:23,304 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-25 10:07:23,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:07:23,305 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-25 10:07:23,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 10:07:23,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:23,311 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 10:07:23,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:07:23,312 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:23,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:23,313 INFO L82 PathProgramCache]: Analyzing trace with hash -88721492, now seen corresponding path program 1 times [2020-09-25 10:07:23,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:23,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201114295] [2020-09-25 10:07:23,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:23,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:23,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:23,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:24,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:25,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:26,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:26,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:26,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:27,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:27,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:28,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:28,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 10:07:28,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:07:28,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:07:28,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:28,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:28,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:07:28,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:07:28,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 10:07:28,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:28,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:28,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:28,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:28,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:28,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:28,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 10:07:28,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:28,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:28,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:07:28,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 10:07:28,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:28,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:28,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:28,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:28,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:07:28,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:28,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 10:07:28,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:28,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:28,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:28,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:07:28,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:07:28,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:07:28,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201114295] [2020-09-25 10:07:28,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:28,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:07:28,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639312950] [2020-09-25 10:07:28,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:07:28,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:28,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:07:28,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:07:28,722 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 6 states. [2020-09-25 10:07:30,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:30,953 INFO L93 Difference]: Finished difference Result 1565 states and 1917 transitions. [2020-09-25 10:07:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:07:30,954 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2020-09-25 10:07:30,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:30,960 INFO L225 Difference]: With dead ends: 1565 [2020-09-25 10:07:30,961 INFO L226 Difference]: Without dead ends: 984 [2020-09-25 10:07:30,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:07:30,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2020-09-25 10:07:30,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 893. [2020-09-25 10:07:30,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 893 states. [2020-09-25 10:07:31,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1098 transitions. [2020-09-25 10:07:31,003 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1098 transitions. Word has length 129 [2020-09-25 10:07:31,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:31,004 INFO L479 AbstractCegarLoop]: Abstraction has 893 states and 1098 transitions. [2020-09-25 10:07:31,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:07:31,005 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1098 transitions. [2020-09-25 10:07:31,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 10:07:31,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:31,010 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:07:31,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:07:31,010 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:31,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:31,011 INFO L82 PathProgramCache]: Analyzing trace with hash -771284323, now seen corresponding path program 1 times [2020-09-25 10:07:31,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:31,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [645994524] [2020-09-25 10:07:31,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:31,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:31,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:31,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:32,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:32,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:32,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:34,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:34,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:35,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:35,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:36,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:36,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 10:07:36,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 10:07:36,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 10:07:36,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:36,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:36,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 10:07:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:07:36,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 10:07:36,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:36,648 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-09-25 10:07:36,879 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2020-09-25 10:07:37,067 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 42 [2020-09-25 10:07:37,260 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2020-09-25 10:07:37,413 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 34 [2020-09-25 10:07:37,551 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 30 [2020-09-25 10:07:37,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:37,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:37,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:37,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:37,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:37,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:07:37,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:37,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:07:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:07:37,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:37,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:37,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:37,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:37,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:37,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:07:37,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:37,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 10:07:37,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:37,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:37,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:07:37,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:37,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:07:37,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:38,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:07:38,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [645994524] [2020-09-25 10:07:38,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:38,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 10:07:38,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138260691] [2020-09-25 10:07:38,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 10:07:38,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:38,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 10:07:38,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-09-25 10:07:38,047 INFO L87 Difference]: Start difference. First operand 893 states and 1098 transitions. Second operand 20 states. [2020-09-25 10:07:39,303 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-09-25 10:07:39,545 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-09-25 10:07:39,945 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 92 [2020-09-25 10:07:40,309 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-09-25 10:07:40,720 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 111 [2020-09-25 10:07:41,422 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 108 [2020-09-25 10:07:41,905 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 105 [2020-09-25 10:07:42,996 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-09-25 10:07:43,441 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-09-25 10:07:43,829 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-09-25 10:07:44,398 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 102 [2020-09-25 10:07:45,373 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-25 10:07:45,755 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-09-25 10:07:46,347 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 97 [2020-09-25 10:07:47,252 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-09-25 10:07:47,516 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-09-25 10:07:48,424 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-09-25 10:07:49,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:49,864 INFO L93 Difference]: Finished difference Result 2214 states and 2853 transitions. [2020-09-25 10:07:49,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-25 10:07:49,865 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 134 [2020-09-25 10:07:49,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:49,874 INFO L225 Difference]: With dead ends: 2214 [2020-09-25 10:07:49,874 INFO L226 Difference]: Without dead ends: 1345 [2020-09-25 10:07:49,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=727, Invalid=1723, Unknown=0, NotChecked=0, Total=2450 [2020-09-25 10:07:49,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2020-09-25 10:07:49,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1258. [2020-09-25 10:07:49,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1258 states. [2020-09-25 10:07:49,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1258 states to 1258 states and 1458 transitions. [2020-09-25 10:07:49,928 INFO L78 Accepts]: Start accepts. Automaton has 1258 states and 1458 transitions. Word has length 134 [2020-09-25 10:07:49,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:49,928 INFO L479 AbstractCegarLoop]: Abstraction has 1258 states and 1458 transitions. [2020-09-25 10:07:49,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 10:07:49,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1258 states and 1458 transitions. [2020-09-25 10:07:49,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-25 10:07:49,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:49,933 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:49,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:07:49,934 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:49,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:49,934 INFO L82 PathProgramCache]: Analyzing trace with hash 694207572, now seen corresponding path program 1 times [2020-09-25 10:07:49,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:49,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530956730] [2020-09-25 10:07:49,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:49,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:50,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:50,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:52,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:52,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:53,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:54,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:54,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:54,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-25 10:07:54,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:07:54,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 10:07:54,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:54,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:54,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 10:07:54,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:07:54,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 10:07:54,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:07:56,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:56,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:56,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:56,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:56,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:56,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 10:07:56,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:56,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:56,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:56,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:56,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 10:07:56,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:56,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:56,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:56,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:56,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:56,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:56,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:07:56,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 10:07:56,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:56,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:56,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:56,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:07:56,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 10:07:56,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:56,633 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:07:56,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530956730] [2020-09-25 10:07:56,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:56,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 10:07:56,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772408507] [2020-09-25 10:07:56,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 10:07:56,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:56,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 10:07:56,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-09-25 10:07:56,638 INFO L87 Difference]: Start difference. First operand 1258 states and 1458 transitions. Second operand 18 states. [2020-09-25 10:07:59,203 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-09-25 10:07:59,860 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-25 10:08:00,148 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2020-09-25 10:08:01,448 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-09-25 10:08:02,076 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74