/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=0.5 --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/Problem10_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:42:31,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:42:31,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:42:31,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:42:31,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:42:31,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:42:31,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:42:31,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:42:31,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:42:31,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:42:31,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:42:31,379 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:42:31,380 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:42:31,381 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:42:31,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:42:31,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:42:31,384 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:42:31,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:42:31,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:42:31,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:42:31,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:42:31,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:42:31,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:42:31,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:42:31,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:42:31,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:42:31,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:42:31,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:42:31,401 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:42:31,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:42:31,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:42:31,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:42:31,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:42:31,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:42:31,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:42:31,406 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:42:31,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:42:31,407 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:42:31,407 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:42:31,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:42:31,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:42:31,410 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 14:42:31,437 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:42:31,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:42:31,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:42:31,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:42:31,439 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:42:31,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:42:31,440 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:42:31,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:42:31,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:42:31,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:42:31,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:42:31,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:42:31,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:42:31,441 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:42:31,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:42:31,442 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:42:31,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:42:31,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:42:31,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:42:31,442 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:42:31,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:42:31,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:42:31,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:42:31,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:42:31,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:42:31,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:42:31,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:42:31,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:42:31,444 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:42:31,444 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:42:31,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:42:31,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:42:31,913 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:42:31,915 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:42:31,917 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:42:31,919 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-25 14:42:32,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/127e29453/c7165966f76345ecb57a239d675547c6/FLAGb5435e6b0 [2020-09-25 14:42:32,606 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:42:32,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label39.c [2020-09-25 14:42:32,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/127e29453/c7165966f76345ecb57a239d675547c6/FLAGb5435e6b0 [2020-09-25 14:42:32,875 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/127e29453/c7165966f76345ecb57a239d675547c6 [2020-09-25 14:42:32,889 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:42:32,894 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:42:32,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:32,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:42:32,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:42:32,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:32" (1/1) ... [2020-09-25 14:42:32,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788ef5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:32, skipping insertion in model container [2020-09-25 14:42:32,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:42:32" (1/1) ... [2020-09-25 14:42:32,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:42:32,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:42:33,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:33,469 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:42:33,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:42:33,725 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:42:33,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:33 WrapperNode [2020-09-25 14:42:33,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:42:33,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:42:33,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:42:33,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:42:33,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:33" (1/1) ... [2020-09-25 14:42:33,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:33" (1/1) ... [2020-09-25 14:42:33,765 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:33" (1/1) ... [2020-09-25 14:42:33,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:33" (1/1) ... [2020-09-25 14:42:33,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:33" (1/1) ... [2020-09-25 14:42:33,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:33" (1/1) ... [2020-09-25 14:42:33,837 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:33" (1/1) ... [2020-09-25 14:42:33,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:42:33,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:42:33,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:42:33,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:42:33,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:33" (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 14:42:33,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:42:33,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:42:33,938 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:42:33,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:42:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:42:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:42:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:42:33,939 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:42:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:42:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:42:33,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:42:35,345 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:42:35,346 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:42:35,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:35 BoogieIcfgContainer [2020-09-25 14:42:35,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:42:35,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:42:35,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:42:35,360 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:42:35,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:42:32" (1/3) ... [2020-09-25 14:42:35,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c03097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:35, skipping insertion in model container [2020-09-25 14:42:35,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:42:33" (2/3) ... [2020-09-25 14:42:35,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c03097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:42:35, skipping insertion in model container [2020-09-25 14:42:35,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:42:35" (3/3) ... [2020-09-25 14:42:35,364 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label39.c [2020-09-25 14:42:35,375 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:42:35,387 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:42:35,409 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:42:35,442 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:42:35,443 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:42:35,443 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:42:35,443 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:42:35,443 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:42:35,443 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:42:35,443 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:42:35,444 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:42:35,474 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:42:35,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 14:42:35,483 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:35,485 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] [2020-09-25 14:42:35,485 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:35,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:35,493 INFO L82 PathProgramCache]: Analyzing trace with hash 381272735, now seen corresponding path program 1 times [2020-09-25 14:42:35,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:35,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164536142] [2020-09-25 14:42:35,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:35,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:35,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:36,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:36,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 14:42:36,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:36,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 749 [2020-09-25 14:42:36,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:36,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:36,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:36,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:36,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:42:36,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:42:36,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:36,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:36,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:36,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:36,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:36,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 14:42:36,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:36,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:36,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:36,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:42:36,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:36,654 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 14:42:36,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164536142] [2020-09-25 14:42:36,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:42:36,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:42:36,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510936661] [2020-09-25 14:42:36,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:42:36,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:36,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:42:36,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:42:36,687 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:42:38,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:38,872 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 14:42:38,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:42:38,875 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-09-25 14:42:38,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:38,901 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 14:42:38,901 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 14:42:38,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:42:38,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 14:42:39,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 14:42:39,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 14:42:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 14:42:39,023 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 45 [2020-09-25 14:42:39,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:39,024 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 14:42:39,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:42:39,025 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 14:42:39,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 14:42:39,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:39,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:39,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:42:39,033 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:39,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:39,033 INFO L82 PathProgramCache]: Analyzing trace with hash 2073113520, now seen corresponding path program 1 times [2020-09-25 14:42:39,033 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:39,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286852466] [2020-09-25 14:42:39,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:39,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:39,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:39,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:39,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:39,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:39,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:43,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:43,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 14:42:43,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:42:43,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4229 [2020-09-25 14:42:43,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:43,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:43,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:42:43,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:42:43,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 14:42:43,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:43,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:43,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:43,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:43,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:43,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:43,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:43,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:42:43,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:43,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:43,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:43,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:43,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:42:43,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:43,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:43,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:43,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:43,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:43,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:43,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:43,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 14:42:43,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:43,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:43,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:42:43,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:42:43,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286852466] [2020-09-25 14:42:43,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:43,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:42:43,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659065018] [2020-09-25 14:42:43,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:42:43,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:43,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:42:43,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:42:43,647 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 14:42:45,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:45,974 INFO L93 Difference]: Finished difference Result 1376 states and 1765 transitions. [2020-09-25 14:42:45,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:42:45,975 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 124 [2020-09-25 14:42:45,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:45,985 INFO L225 Difference]: With dead ends: 1376 [2020-09-25 14:42:45,985 INFO L226 Difference]: Without dead ends: 847 [2020-09-25 14:42:45,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:42:45,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-09-25 14:42:46,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 847. [2020-09-25 14:42:46,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-09-25 14:42:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1084 transitions. [2020-09-25 14:42:46,050 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1084 transitions. Word has length 124 [2020-09-25 14:42:46,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:46,053 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1084 transitions. [2020-09-25 14:42:46,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:42:46,053 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1084 transitions. [2020-09-25 14:42:46,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-25 14:42:46,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:46,070 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:46,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:42:46,071 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:46,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:46,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1595126062, now seen corresponding path program 1 times [2020-09-25 14:42:46,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:46,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939326953] [2020-09-25 14:42:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:46,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:46,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:46,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:46,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:48,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:48,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:48,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:50,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:50,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 14:42:50,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:42:50,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4470 [2020-09-25 14:42:50,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:50,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:50,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:42:50,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:42:50,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 14:42:50,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:50,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:50,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:50,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:50,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:50,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:50,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:42:50,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:50,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:50,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:50,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:42:50,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:42:50,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:50,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:51,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:51,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:51,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:51,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 14:42:51,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:51,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:51,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:51,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:51,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:42:51,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:51,144 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:42:51,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939326953] [2020-09-25 14:42:51,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:51,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:42:51,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242689927] [2020-09-25 14:42:51,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:42:51,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:51,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:42:51,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:42:51,150 INFO L87 Difference]: Start difference. First operand 847 states and 1084 transitions. Second operand 8 states. [2020-09-25 14:42:54,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:54,734 INFO L93 Difference]: Finished difference Result 2642 states and 3685 transitions. [2020-09-25 14:42:54,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:42:54,735 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 134 [2020-09-25 14:42:54,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:54,763 INFO L225 Difference]: With dead ends: 2642 [2020-09-25 14:42:54,763 INFO L226 Difference]: Without dead ends: 1960 [2020-09-25 14:42:54,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:42:54,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2020-09-25 14:42:54,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1519. [2020-09-25 14:42:54,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1519 states. [2020-09-25 14:42:54,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 1995 transitions. [2020-09-25 14:42:54,884 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 1995 transitions. Word has length 134 [2020-09-25 14:42:54,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:54,889 INFO L479 AbstractCegarLoop]: Abstraction has 1519 states and 1995 transitions. [2020-09-25 14:42:54,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:42:54,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 1995 transitions. [2020-09-25 14:42:54,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 14:42:54,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:54,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:54,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:42:54,897 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:54,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:54,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1117469357, now seen corresponding path program 1 times [2020-09-25 14:42:54,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:54,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373334079] [2020-09-25 14:42:54,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:54,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:55,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:56,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:58,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:59,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:59,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 14:42:59,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:42:59,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:42:59,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:59,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:59,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:42:59,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:42:59,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-25 14:42:59,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:43:00,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:00,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:00,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:00,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:00,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:00,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:43:00,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:00,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:00,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:00,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:00,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:43:00,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:00,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:00,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:00,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:00,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 14:43:00,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:00,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 14:43:00,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:00,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:00,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:00,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:00,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 14:43:00,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:00,529 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:43:00,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373334079] [2020-09-25 14:43:00,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:43:00,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 14:43:00,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071983726] [2020-09-25 14:43:00,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:43:00,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:00,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:43:00,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:43:00,533 INFO L87 Difference]: Start difference. First operand 1519 states and 1995 transitions. Second operand 8 states. [2020-09-25 14:43:03,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:03,552 INFO L93 Difference]: Finished difference Result 4757 states and 6662 transitions. [2020-09-25 14:43:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 14:43:03,553 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 191 [2020-09-25 14:43:03,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:03,576 INFO L225 Difference]: With dead ends: 4757 [2020-09-25 14:43:03,576 INFO L226 Difference]: Without dead ends: 3403 [2020-09-25 14:43:03,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:43:03,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3403 states. [2020-09-25 14:43:03,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3403 to 3377. [2020-09-25 14:43:03,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3377 states. [2020-09-25 14:43:03,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 4345 transitions. [2020-09-25 14:43:03,725 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 4345 transitions. Word has length 191 [2020-09-25 14:43:03,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:03,726 INFO L479 AbstractCegarLoop]: Abstraction has 3377 states and 4345 transitions. [2020-09-25 14:43:03,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:43:03,726 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 4345 transitions. [2020-09-25 14:43:03,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 14:43:03,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:03,731 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, 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] [2020-09-25 14:43:03,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:43:03,731 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:03,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:03,732 INFO L82 PathProgramCache]: Analyzing trace with hash -877884703, now seen corresponding path program 1 times [2020-09-25 14:43:03,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:03,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88434100] [2020-09-25 14:43:03,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:03,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:03,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:04,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:05,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:05,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:06,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:08,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:08,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-09-25 14:43:08,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:43:08,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 14:43:08,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:08,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:08,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 14:43:08,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 14:43:08,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:08,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:08,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:08,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:08,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:08,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:08,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:43:08,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:08,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:08,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:08,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:08,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:08,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:08,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:08,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:08,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:08,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 14:43:08,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:08,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:08,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:08,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:08,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:43:08,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:09,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:43:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:09,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:09,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:09,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:43:09,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:09,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-09-25 14:43:09,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:09,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:43:09,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:43:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:43:09,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:43:09,452 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:43:09,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88434100] [2020-09-25 14:43:09,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:09,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:43:09,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539889302] [2020-09-25 14:43:09,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:43:09,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:09,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:43:09,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:43:09,456 INFO L87 Difference]: Start difference. First operand 3377 states and 4345 transitions. Second operand 7 states. [2020-09-25 14:43:12,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:43:12,027 INFO L93 Difference]: Finished difference Result 6703 states and 8920 transitions. [2020-09-25 14:43:12,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:43:12,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-09-25 14:43:12,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:43:12,052 INFO L225 Difference]: With dead ends: 6703 [2020-09-25 14:43:12,053 INFO L226 Difference]: Without dead ends: 3491 [2020-09-25 14:43:12,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:43:12,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3491 states. [2020-09-25 14:43:12,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3491 to 3233. [2020-09-25 14:43:12,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3233 states. [2020-09-25 14:43:12,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3233 states to 3233 states and 4078 transitions. [2020-09-25 14:43:12,232 INFO L78 Accepts]: Start accepts. Automaton has 3233 states and 4078 transitions. Word has length 213 [2020-09-25 14:43:12,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:43:12,233 INFO L479 AbstractCegarLoop]: Abstraction has 3233 states and 4078 transitions. [2020-09-25 14:43:12,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:43:12,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3233 states and 4078 transitions. [2020-09-25 14:43:12,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 14:43:12,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:43:12,243 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, 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] [2020-09-25 14:43:12,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:43:12,244 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:43:12,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:43:12,244 INFO L82 PathProgramCache]: Analyzing trace with hash 246652291, now seen corresponding path program 1 times [2020-09-25 14:43:12,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:43:12,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129165015] [2020-09-25 14:43:12,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:43:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:12,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:12,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:12,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:13,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:13,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:14,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:14,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:14,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:16,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:17,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 14:43:17,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:43:17,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:43:17,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:17,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:43:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 14:43:17,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 14:43:17,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:17,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:43:17,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:17,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:17,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:43:17,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:17,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:43:17,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:17,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:17,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:43:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:43:17,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:17,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:43:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:17,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:17,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:43:17,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:43:17,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 14:43:17,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:17,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:43:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:17,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:43:17,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:43:17,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:43:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:43:17,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:43:17,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:43:17,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:43:17,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:43:17,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 14:43:17,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:43:17,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:43:17,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:43:17,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:43:17,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:43:17,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:43:18,055 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 66 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 14:43:18,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129165015] [2020-09-25 14:43:18,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:43:18,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:43:18,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730017275] [2020-09-25 14:43:18,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:43:18,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:43:18,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:43:18,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:43:18,059 INFO L87 Difference]: Start difference. First operand 3233 states and 4078 transitions. Second operand 9 states.