/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:30:50,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:30:50,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:30:50,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:30:50,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:30:50,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:30:50,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:30:50,983 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:30:50,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:30:50,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:30:50,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:30:50,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:30:50,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:30:50,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:30:50,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:30:51,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:30:51,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:30:51,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:30:51,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:30:51,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:30:51,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:30:51,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:30:51,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:30:51,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:30:51,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:30:51,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:30:51,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:30:51,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:30:51,042 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:30:51,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:30:51,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:30:51,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:30:51,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:30:51,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:30:51,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:30:51,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:30:51,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:30:51,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:30:51,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:30:51,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:30:51,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:30:51,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:30:51,104 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:30:51,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:30:51,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:30:51,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:30:51,107 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:30:51,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:30:51,108 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:30:51,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:30:51,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:30:51,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:30:51,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:30:51,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:30:51,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:30:51,111 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:30:51,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:30:51,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:30:51,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:30:51,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:30:51,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:30:51,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:30:51,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:30:51,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:30:51,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:30:51,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:30:51,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:30:51,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:30:51,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:30:51,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:30:51,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:30:51,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:30:51,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:30:51,640 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:30:51,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:30:51,650 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:30:51,650 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:30:51,652 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label09.c [2020-09-25 13:30:51,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dc2b8f65/88af6a7e6e294e1f83b6a6993ab87aa7/FLAG3724252b5 [2020-09-25 13:30:52,374 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:30:52,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label09.c [2020-09-25 13:30:52,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dc2b8f65/88af6a7e6e294e1f83b6a6993ab87aa7/FLAG3724252b5 [2020-09-25 13:30:52,626 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dc2b8f65/88af6a7e6e294e1f83b6a6993ab87aa7 [2020-09-25 13:30:52,638 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:30:52,643 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:30:52,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:52,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:30:52,651 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:30:52,652 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:52" (1/1) ... [2020-09-25 13:30:52,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0614b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:52, skipping insertion in model container [2020-09-25 13:30:52,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:52" (1/1) ... [2020-09-25 13:30:52,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:30:52,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:30:53,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:53,197 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:30:53,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:53,509 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:30:53,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:53 WrapperNode [2020-09-25 13:30:53,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:53,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:30:53,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:30:53,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:30:53,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:53" (1/1) ... [2020-09-25 13:30:53,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:53" (1/1) ... [2020-09-25 13:30:53,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:53" (1/1) ... [2020-09-25 13:30:53,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:53" (1/1) ... [2020-09-25 13:30:53,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:53" (1/1) ... [2020-09-25 13:30:53,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:53" (1/1) ... [2020-09-25 13:30:53,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:53" (1/1) ... [2020-09-25 13:30:53,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:30:53,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:30:53,646 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:30:53,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:30:53,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:30:53,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:30:53,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:30:53,741 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:30:53,741 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:30:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:30:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:30:53,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:30:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:30:53,743 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:30:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:30:53,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:30:55,133 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:30:55,134 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:30:55,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:55 BoogieIcfgContainer [2020-09-25 13:30:55,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:30:55,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:30:55,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:30:55,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:30:55,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:30:52" (1/3) ... [2020-09-25 13:30:55,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e437f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:55, skipping insertion in model container [2020-09-25 13:30:55,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:53" (2/3) ... [2020-09-25 13:30:55,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e437f90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:55, skipping insertion in model container [2020-09-25 13:30:55,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:55" (3/3) ... [2020-09-25 13:30:55,154 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label09.c [2020-09-25 13:30:55,166 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:30:55,178 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:30:55,200 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:30:55,237 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:30:55,238 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:30:55,238 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:30:55,238 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:30:55,238 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:30:55,238 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:30:55,238 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:30:55,239 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:30:55,275 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:30:55,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 13:30:55,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:55,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:30:55,297 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:55,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:55,304 INFO L82 PathProgramCache]: Analyzing trace with hash -260189822, now seen corresponding path program 1 times [2020-09-25 13:30:55,314 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:55,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967537662] [2020-09-25 13:30:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:55,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:56,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:56,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:56,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:58,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:59,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:59,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:59,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:59,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:00,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:00,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:00,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 13:31:00,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:31:00,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 13:31:00,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:00,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:00,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:31:00,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:31:00,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 13:31:00,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:31:00,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:00,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:00,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:00,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:00,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:00,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:31:00,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:00,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:00,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:00,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:00,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:31:00,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:31:00,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967537662] [2020-09-25 13:31:00,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:31:00,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:31:00,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478627257] [2020-09-25 13:31:00,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:31:00,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:00,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:31:00,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:31:00,956 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:31:03,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:03,309 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 13:31:03,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:31:03,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-09-25 13:31:03,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:03,349 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 13:31:03,349 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 13:31:03,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:03,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 13:31:03,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 13:31:03,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 13:31:03,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 13:31:03,473 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 147 [2020-09-25 13:31:03,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:03,474 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 13:31:03,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:31:03,474 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 13:31:03,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 13:31:03,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:03,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:31:03,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:31:03,484 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:03,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:03,485 INFO L82 PathProgramCache]: Analyzing trace with hash 345157294, now seen corresponding path program 1 times [2020-09-25 13:31:03,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:03,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785589949] [2020-09-25 13:31:03,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:03,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:03,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:03,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:04,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:04,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:04,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:05,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:06,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:06,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:06,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:07,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:08,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:08,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 13:31:08,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:31:08,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 13:31:08,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:08,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:08,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:08,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 13:31:08,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 13:31:08,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:08,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:08,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:08,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:08,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:08,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:08,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:31:08,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:08,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:08,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:08,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:08,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:08,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:08,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:08,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:08,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:08,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:31:08,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:08,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:31:08,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:08,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:08,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 13:31:08,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:31:08,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785589949] [2020-09-25 13:31:08,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:08,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:31:08,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815772374] [2020-09-25 13:31:08,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:31:08,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:08,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:31:08,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:08,790 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 13:31:10,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:10,838 INFO L93 Difference]: Finished difference Result 1753 states and 2210 transitions. [2020-09-25 13:31:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:31:10,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-09-25 13:31:10,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:10,855 INFO L225 Difference]: With dead ends: 1753 [2020-09-25 13:31:10,855 INFO L226 Difference]: Without dead ends: 1042 [2020-09-25 13:31:10,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:31:10,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-09-25 13:31:10,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 881. [2020-09-25 13:31:10,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-09-25 13:31:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1111 transitions. [2020-09-25 13:31:10,902 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1111 transitions. Word has length 165 [2020-09-25 13:31:10,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:10,903 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 1111 transitions. [2020-09-25 13:31:10,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:31:10,904 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1111 transitions. [2020-09-25 13:31:10,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 13:31:10,909 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:10,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:31:10,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:31:10,910 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:10,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:10,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1869570329, now seen corresponding path program 1 times [2020-09-25 13:31:10,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:10,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955689212] [2020-09-25 13:31:10,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:10,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:11,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:11,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:11,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:14,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:14,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:15,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:15,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 13:31:15,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:31:15,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 13:31:15,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:15,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:15,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 13:31:15,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 13:31:15,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:16,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:16,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:16,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:16,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:16,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:16,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:31:16,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:16,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:16,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:16,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:16,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:16,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:16,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:16,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:16,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:16,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:16,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:31:16,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:16,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 13:31:16,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:16,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:16,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:31:16,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:31:16,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955689212] [2020-09-25 13:31:16,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:16,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:31:16,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673545482] [2020-09-25 13:31:16,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:31:16,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:16,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:31:16,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:16,258 INFO L87 Difference]: Start difference. First operand 881 states and 1111 transitions. Second operand 5 states. [2020-09-25 13:31:18,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:18,365 INFO L93 Difference]: Finished difference Result 2220 states and 2949 transitions. [2020-09-25 13:31:18,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:31:18,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 13:31:18,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:18,374 INFO L225 Difference]: With dead ends: 2220 [2020-09-25 13:31:18,375 INFO L226 Difference]: Without dead ends: 1361 [2020-09-25 13:31:18,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:31:18,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-09-25 13:31:18,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1341. [2020-09-25 13:31:18,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-09-25 13:31:18,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1671 transitions. [2020-09-25 13:31:18,429 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1671 transitions. Word has length 181 [2020-09-25 13:31:18,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:18,430 INFO L479 AbstractCegarLoop]: Abstraction has 1341 states and 1671 transitions. [2020-09-25 13:31:18,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:31:18,430 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1671 transitions. [2020-09-25 13:31:18,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-09-25 13:31:18,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:18,437 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:31:18,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:31:18,438 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:18,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:18,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1640166086, now seen corresponding path program 1 times [2020-09-25 13:31:18,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:18,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976313618] [2020-09-25 13:31:18,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:18,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:18,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:18,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:19,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:20,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:20,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:23,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:23,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-25 13:31:23,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:31:23,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 13:31:23,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:23,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:23,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:31:23,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 13:31:23,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 13:31:23,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:23,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:23,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:23,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:23,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:23,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:23,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:31:23,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:23,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:23,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:23,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:23,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:23,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:23,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:23,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:31:23,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:23,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 13:31:23,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:23,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:31:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:23,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 13:31:23,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:31:23,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976313618] [2020-09-25 13:31:23,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:23,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:31:23,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922172171] [2020-09-25 13:31:23,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:31:23,757 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:23,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:31:23,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:31:23,759 INFO L87 Difference]: Start difference. First operand 1341 states and 1671 transitions. Second operand 5 states. [2020-09-25 13:31:25,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:25,474 INFO L93 Difference]: Finished difference Result 3590 states and 4696 transitions. [2020-09-25 13:31:25,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:31:25,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-09-25 13:31:25,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:25,493 INFO L225 Difference]: With dead ends: 3590 [2020-09-25 13:31:25,493 INFO L226 Difference]: Without dead ends: 2271 [2020-09-25 13:31:25,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:31:25,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2271 states. [2020-09-25 13:31:25,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2271 to 2249. [2020-09-25 13:31:25,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2249 states. [2020-09-25 13:31:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2249 states to 2249 states and 2841 transitions. [2020-09-25 13:31:25,592 INFO L78 Accepts]: Start accepts. Automaton has 2249 states and 2841 transitions. Word has length 185 [2020-09-25 13:31:25,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:25,592 INFO L479 AbstractCegarLoop]: Abstraction has 2249 states and 2841 transitions. [2020-09-25 13:31:25,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:31:25,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states and 2841 transitions. [2020-09-25 13:31:25,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-09-25 13:31:25,605 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:25,606 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:31:25,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:31:25,607 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:25,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:25,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1032028468, now seen corresponding path program 1 times [2020-09-25 13:31:25,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:25,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185246115] [2020-09-25 13:31:25,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:25,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:25,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:25,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:26,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:30,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:30,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-09-25 13:31:30,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:31:30,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:31:30,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:30,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:30,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:31:30,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 13:31:30,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 13:31:30,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:30,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:31:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:30,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:30,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:30,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:31:30,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:30,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:31:30,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:30,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:30,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:30,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:30,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:30,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:31:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:30,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:30,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:30,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:31:30,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:30,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:31:30,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:30,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:30,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:31:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:31:31,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:31,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 13:31:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:31,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:31,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:31,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:31:31,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:31:31,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 13:31:31,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:31,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:31,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:31:31,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:31:31,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:31:31,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:31:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 13:31:31,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185246115] [2020-09-25 13:31:31,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:31:31,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:31:31,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949384542] [2020-09-25 13:31:31,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:31:31,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:31:31,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:31:31,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:31:31,512 INFO L87 Difference]: Start difference. First operand 2249 states and 2841 transitions. Second operand 8 states. [2020-09-25 13:31:34,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:31:34,158 INFO L93 Difference]: Finished difference Result 4901 states and 6384 transitions. [2020-09-25 13:31:34,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:31:34,158 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-09-25 13:31:34,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:31:34,173 INFO L225 Difference]: With dead ends: 4901 [2020-09-25 13:31:34,173 INFO L226 Difference]: Without dead ends: 2576 [2020-09-25 13:31:34,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:31:34,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2576 states. [2020-09-25 13:31:34,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2576 to 2547. [2020-09-25 13:31:34,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2547 states. [2020-09-25 13:31:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 3170 transitions. [2020-09-25 13:31:34,266 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 3170 transitions. Word has length 225 [2020-09-25 13:31:34,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:31:34,267 INFO L479 AbstractCegarLoop]: Abstraction has 2547 states and 3170 transitions. [2020-09-25 13:31:34,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:31:34,267 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 3170 transitions. [2020-09-25 13:31:34,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 13:31:34,279 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:31:34,279 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:31:34,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:31:34,280 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:31:34,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:31:34,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1501426121, now seen corresponding path program 1 times [2020-09-25 13:31:34,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:31:34,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814445313] [2020-09-25 13:31:34,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:31:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:31:34,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:34,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:34,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:35,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:37,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:38,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:38,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:31:39,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:31:39,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-25 13:31:39,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:31:39,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 13:31:39,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:31:39,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:31:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:31:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:31:39,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-09-25 13:31:39,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1