/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:14:08,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:14:08,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:14:08,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:14:08,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:14:09,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:14:09,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:14:09,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:14:09,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:14:09,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:14:09,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:14:09,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:14:09,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:14:09,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:14:09,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:14:09,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:14:09,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:14:09,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:14:09,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:14:09,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:14:09,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:14:09,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:14:09,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:14:09,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:14:09,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:14:09,047 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:14:09,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:14:09,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:14:09,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:14:09,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:14:09,054 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:14:09,055 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:14:09,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:14:09,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:14:09,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:14:09,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:14:09,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:14:09,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:14:09,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:14:09,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:14:09,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:14:09,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:14:09,105 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:14:09,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:14:09,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:14:09,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:14:09,107 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:14:09,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:14:09,107 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:14:09,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:14:09,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:14:09,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:14:09,108 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:14:09,108 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:14:09,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:14:09,109 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:14:09,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:14:09,109 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:14:09,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:14:09,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:14:09,110 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:14:09,110 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:14:09,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:14:09,110 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:14:09,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:14:09,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:14:09,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:14:09,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:14:09,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:14:09,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:14:09,112 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:14:09,112 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:14:09,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:14:09,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:14:09,594 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:14:09,596 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:14:09,596 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:14:09,597 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-25 11:14:09,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5c9a304a/b4122428ba5b43359222a3f9eba0b201/FLAG8a37d3407 [2020-09-25 11:14:10,343 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:14:10,349 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label38.c [2020-09-25 11:14:10,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5c9a304a/b4122428ba5b43359222a3f9eba0b201/FLAG8a37d3407 [2020-09-25 11:14:10,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a5c9a304a/b4122428ba5b43359222a3f9eba0b201 [2020-09-25 11:14:10,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:14:10,620 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:14:10,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:14:10,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:14:10,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:14:10,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:14:10" (1/1) ... [2020-09-25 11:14:10,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39bc374b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:10, skipping insertion in model container [2020-09-25 11:14:10,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:14:10" (1/1) ... [2020-09-25 11:14:10,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:14:10,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:14:11,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:14:11,240 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:14:11,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:14:11,513 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:14:11,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:11 WrapperNode [2020-09-25 11:14:11,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:14:11,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:14:11,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:14:11,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:14:11,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:11" (1/1) ... [2020-09-25 11:14:11,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:11" (1/1) ... [2020-09-25 11:14:11,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:11" (1/1) ... [2020-09-25 11:14:11,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:11" (1/1) ... [2020-09-25 11:14:11,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:11" (1/1) ... [2020-09-25 11:14:11,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:11" (1/1) ... [2020-09-25 11:14:11,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:11" (1/1) ... [2020-09-25 11:14:11,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:14:11,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:14:11,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:14:11,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:14:11,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:14:11,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:14:11,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:14:11,751 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:14:11,751 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:14:11,751 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:14:11,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:14:11,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:14:11,753 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:14:11,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:14:11,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:14:11,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:14:13,128 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:14:13,129 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:14:13,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:14:13 BoogieIcfgContainer [2020-09-25 11:14:13,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:14:13,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:14:13,140 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:14:13,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:14:13,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:14:10" (1/3) ... [2020-09-25 11:14:13,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fccf686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:14:13, skipping insertion in model container [2020-09-25 11:14:13,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:11" (2/3) ... [2020-09-25 11:14:13,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fccf686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:14:13, skipping insertion in model container [2020-09-25 11:14:13,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:14:13" (3/3) ... [2020-09-25 11:14:13,149 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label38.c [2020-09-25 11:14:13,161 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:14:13,172 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:14:13,194 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:14:13,230 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:14:13,231 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:14:13,231 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:14:13,231 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:14:13,231 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:14:13,231 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:14:13,232 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:14:13,232 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:14:13,265 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 11:14:13,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-25 11:14:13,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:13,287 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] [2020-09-25 11:14:13,287 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:13,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:13,295 INFO L82 PathProgramCache]: Analyzing trace with hash -857113145, now seen corresponding path program 1 times [2020-09-25 11:14:13,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:13,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61762524] [2020-09-25 11:14:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:13,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:14,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:14,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:15,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:15,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:16,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:17,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:18,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:18,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 11:14:18,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:14:18,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 11:14:18,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:18,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:14:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 11:14:18,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 11:14:18,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:14:18,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:18,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:18,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:18,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:18,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:18,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 11:14:18,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:18,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:18,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:18,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:18,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 11:14:18,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:14:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:14:18,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61762524] [2020-09-25 11:14:19,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:14:19,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:14:19,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151612153] [2020-09-25 11:14:19,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:14:19,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:19,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:14:19,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:14:19,034 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 11:14:21,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:21,238 INFO L93 Difference]: Finished difference Result 1231 states and 1630 transitions. [2020-09-25 11:14:21,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:14:21,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-09-25 11:14:21,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:21,286 INFO L225 Difference]: With dead ends: 1231 [2020-09-25 11:14:21,286 INFO L226 Difference]: Without dead ends: 657 [2020-09-25 11:14:21,296 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 11:14:21,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2020-09-25 11:14:21,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 603. [2020-09-25 11:14:21,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 11:14:21,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 707 transitions. [2020-09-25 11:14:21,421 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 707 transitions. Word has length 110 [2020-09-25 11:14:21,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:21,422 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 707 transitions. [2020-09-25 11:14:21,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:14:21,422 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 707 transitions. [2020-09-25 11:14:21,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 11:14:21,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:21,432 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:14:21,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:14:21,433 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:21,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:21,434 INFO L82 PathProgramCache]: Analyzing trace with hash 703741270, now seen corresponding path program 1 times [2020-09-25 11:14:21,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:21,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88199374] [2020-09-25 11:14:21,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:21,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:21,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:21,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:23,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:23,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 11:14:23,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:14:23,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1492 [2020-09-25 11:14:23,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:23,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:23,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:14:23,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:14:23,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 11:14:23,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:23,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:23,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:23,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:23,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:23,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:23,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:14:23,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:23,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:23,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:23,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:23,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:14:23,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:23,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:23,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:23,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:23,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:23,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:14:23,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:14:23,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 11:14:23,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:23,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:14:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:14:23,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:14:23,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88199374] [2020-09-25 11:14:23,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:23,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 11:14:23,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723226773] [2020-09-25 11:14:23,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 11:14:23,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:23,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 11:14:23,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:14:23,357 INFO L87 Difference]: Start difference. First operand 603 states and 707 transitions. Second operand 6 states. [2020-09-25 11:14:25,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:25,472 INFO L93 Difference]: Finished difference Result 1561 states and 1898 transitions. [2020-09-25 11:14:25,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:14:25,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-09-25 11:14:25,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:25,486 INFO L225 Difference]: With dead ends: 1561 [2020-09-25 11:14:25,486 INFO L226 Difference]: Without dead ends: 982 [2020-09-25 11:14:25,489 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 11:14:25,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-09-25 11:14:25,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 891. [2020-09-25 11:14:25,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 11:14:25,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1085 transitions. [2020-09-25 11:14:25,558 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1085 transitions. Word has length 131 [2020-09-25 11:14:25,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:25,560 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1085 transitions. [2020-09-25 11:14:25,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 11:14:25,560 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1085 transitions. [2020-09-25 11:14:25,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 11:14:25,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:25,570 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] [2020-09-25 11:14:25,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:14:25,570 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:25,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:25,571 INFO L82 PathProgramCache]: Analyzing trace with hash 772380757, now seen corresponding path program 1 times [2020-09-25 11:14:25,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:25,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559009776] [2020-09-25 11:14:25,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:25,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:25,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:25,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:25,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:26,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:26,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:26,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:27,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:27,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:28,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:28,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:30,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:30,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:30,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:30,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 11:14:30,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:14:30,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 11:14:30,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:30,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:30,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:30,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 11:14:30,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 11:14:30,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:30,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:30,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:30,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:30,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:30,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:30,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:14:30,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:30,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:30,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:30,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:30,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:30,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:30,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:30,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:30,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:30,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:14:30,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:30,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:14:30,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:30,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:14:30,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:30,836 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 11:14:30,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559009776] [2020-09-25 11:14:30,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:30,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:14:30,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367621395] [2020-09-25 11:14:30,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:14:30,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:30,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:14:30,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:14:30,840 INFO L87 Difference]: Start difference. First operand 891 states and 1085 transitions. Second operand 5 states. [2020-09-25 11:14:33,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:33,203 INFO L93 Difference]: Finished difference Result 2139 states and 2680 transitions. [2020-09-25 11:14:33,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:14:33,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-09-25 11:14:33,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:33,213 INFO L225 Difference]: With dead ends: 2139 [2020-09-25 11:14:33,213 INFO L226 Difference]: Without dead ends: 1272 [2020-09-25 11:14:33,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:14:33,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2020-09-25 11:14:33,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1038. [2020-09-25 11:14:33,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-09-25 11:14:33,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1279 transitions. [2020-09-25 11:14:33,259 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1279 transitions. Word has length 132 [2020-09-25 11:14:33,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:33,259 INFO L479 AbstractCegarLoop]: Abstraction has 1038 states and 1279 transitions. [2020-09-25 11:14:33,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:14:33,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1279 transitions. [2020-09-25 11:14:33,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 11:14:33,265 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:33,265 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:14:33,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:14:33,266 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:33,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:33,266 INFO L82 PathProgramCache]: Analyzing trace with hash -439956008, now seen corresponding path program 1 times [2020-09-25 11:14:33,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:33,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162837165] [2020-09-25 11:14:33,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:33,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:33,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:34,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:34,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:34,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:35,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:38,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:38,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:38,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 11:14:38,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:14:38,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 11:14:38,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:38,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:38,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 11:14:38,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-25 11:14:38,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:14:38,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:38,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:38,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:38,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:38,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:38,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:14:38,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:38,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:14:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:38,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:14:38,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:38,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:38,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:38,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:38,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:14:38,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:38,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 11:14:38,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:38,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:38,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:38,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:38,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 11:14:38,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:14:38,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162837165] [2020-09-25 11:14:38,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:38,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 11:14:38,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895278362] [2020-09-25 11:14:38,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:14:38,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:38,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:14:38,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:14:38,571 INFO L87 Difference]: Start difference. First operand 1038 states and 1279 transitions. Second operand 5 states. [2020-09-25 11:14:40,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:40,767 INFO L93 Difference]: Finished difference Result 2796 states and 3594 transitions. [2020-09-25 11:14:40,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:14:40,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-25 11:14:40,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:40,788 INFO L225 Difference]: With dead ends: 2796 [2020-09-25 11:14:40,788 INFO L226 Difference]: Without dead ends: 1782 [2020-09-25 11:14:40,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:14:40,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2020-09-25 11:14:40,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1469. [2020-09-25 11:14:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-09-25 11:14:40,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1797 transitions. [2020-09-25 11:14:40,879 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1797 transitions. Word has length 147 [2020-09-25 11:14:40,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:40,880 INFO L479 AbstractCegarLoop]: Abstraction has 1469 states and 1797 transitions. [2020-09-25 11:14:40,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:14:40,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1797 transitions. [2020-09-25 11:14:40,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 11:14:40,892 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:40,893 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:14:40,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:14:40,894 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:40,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:40,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1709240601, now seen corresponding path program 1 times [2020-09-25 11:14:40,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:40,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265566048] [2020-09-25 11:14:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:40,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:41,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:41,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:41,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:41,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:41,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:43,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:45,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:45,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-09-25 11:14:45,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:14:45,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 11:14:45,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:45,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:45,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:14:45,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 11:14:45,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-09-25 11:14:45,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:46,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:46,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:46,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:46,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:46,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:46,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:14:46,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:46,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:46,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:46,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:46,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:14:46,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:14:46,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:46,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:46,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:46,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:46,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 11:14:46,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:14:46,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 11:14:46,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:46,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:14:46,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:14:46,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:14:46,421 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:14:46,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265566048] [2020-09-25 11:14:46,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:46,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:14:46,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69165660] [2020-09-25 11:14:46,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:14:46,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:46,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:14:46,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:14:46,423 INFO L87 Difference]: Start difference. First operand 1469 states and 1797 transitions. Second operand 7 states. [2020-09-25 11:14:48,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:48,916 INFO L93 Difference]: Finished difference Result 4429 states and 5748 transitions. [2020-09-25 11:14:48,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:14:48,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-09-25 11:14:48,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:48,936 INFO L225 Difference]: With dead ends: 4429 [2020-09-25 11:14:48,937 INFO L226 Difference]: Without dead ends: 2672 [2020-09-25 11:14:48,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:14:48,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2020-09-25 11:14:49,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 2173. [2020-09-25 11:14:49,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2173 states. [2020-09-25 11:14:49,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2173 states to 2173 states and 2657 transitions. [2020-09-25 11:14:49,028 INFO L78 Accepts]: Start accepts. Automaton has 2173 states and 2657 transitions. Word has length 153 [2020-09-25 11:14:49,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:49,029 INFO L479 AbstractCegarLoop]: Abstraction has 2173 states and 2657 transitions. [2020-09-25 11:14:49,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:14:49,029 INFO L276 IsEmpty]: Start isEmpty. Operand 2173 states and 2657 transitions. [2020-09-25 11:14:49,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 11:14:49,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:49,039 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:14:49,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:14:49,039 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:49,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:49,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1319899365, now seen corresponding path program 1 times [2020-09-25 11:14:49,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:49,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866444929] [2020-09-25 11:14:49,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:49,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:49,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:49,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:49,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:49,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:49,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:54,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:54,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 11:14:54,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:14:54,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 11:14:54,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:54,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:14:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 11:14:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-09-25 11:14:54,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:14:54,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:54,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:54,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:54,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:54,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:54,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 11:14:54,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:54,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:54,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:14:54,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:54,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 11:14:54,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:14:54,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:14:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:54,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:54,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:54,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:54,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:14:54,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:14:54,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 11:14:54,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:54,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:54,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:54,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:14:54,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:14:54,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:54,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 11:14:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:54,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:54,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:54,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 11:14:54,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:54,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 11:14:54,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:54,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:54,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:14:54,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:14:54,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 11:14:54,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 11:14:54,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866444929] [2020-09-25 11:14:54,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:14:54,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:14:54,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833681842] [2020-09-25 11:14:54,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:14:54,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:54,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:14:54,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:14:54,753 INFO L87 Difference]: Start difference. First operand 2173 states and 2657 transitions. Second operand 9 states. [2020-09-25 11:14:55,796 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62