/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:46:15,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:46:15,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:46:15,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:46:15,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:46:15,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:46:15,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:46:15,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:46:15,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:46:15,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:46:15,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:46:15,885 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:46:15,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:46:15,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:46:15,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:46:15,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:46:15,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:46:15,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:46:15,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:46:15,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:46:15,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:46:15,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:46:15,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:46:15,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:46:15,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:46:15,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:46:15,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:46:15,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:46:15,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:46:15,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:46:15,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:46:15,936 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:46:15,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:46:15,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:46:15,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:46:15,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:46:15,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:46:15,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:46:15,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:46:15,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:46:15,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:46:15,946 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 06:46:15,990 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:46:15,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:46:15,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:46:15,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:46:15,993 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:46:15,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:46:15,994 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:46:15,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:46:15,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:46:15,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:46:15,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:46:15,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:46:15,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:46:15,996 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:46:15,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:46:15,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:46:15,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:46:15,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:46:15,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:46:15,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:46:15,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:46:15,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:46:15,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:46:15,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:46:15,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:46:15,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:46:15,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:46:15,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:46:15,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:46:15,999 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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;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=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:46:16,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:46:16,500 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:46:16,505 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:46:16,509 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:46:16,509 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:46:16,511 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 06:46:16,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cacd7b00b/81b516ed7c324132b937b008f001d06f/FLAG3f30cd96a [2020-09-25 06:46:17,209 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:46:17,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label55.c [2020-09-25 06:46:17,230 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cacd7b00b/81b516ed7c324132b937b008f001d06f/FLAG3f30cd96a [2020-09-25 06:46:17,462 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cacd7b00b/81b516ed7c324132b937b008f001d06f [2020-09-25 06:46:17,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:46:17,481 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:46:17,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:17,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:46:17,488 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:46:17,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:17" (1/1) ... [2020-09-25 06:46:17,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@87e4b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:17, skipping insertion in model container [2020-09-25 06:46:17,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:46:17" (1/1) ... [2020-09-25 06:46:17,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:46:17,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:46:18,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:18,206 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:46:18,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:46:18,391 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:46:18,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:18 WrapperNode [2020-09-25 06:46:18,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:46:18,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:46:18,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:46:18,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:46:18,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:18" (1/1) ... [2020-09-25 06:46:18,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:18" (1/1) ... [2020-09-25 06:46:18,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:18" (1/1) ... [2020-09-25 06:46:18,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:18" (1/1) ... [2020-09-25 06:46:18,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:18" (1/1) ... [2020-09-25 06:46:18,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:18" (1/1) ... [2020-09-25 06:46:18,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:18" (1/1) ... [2020-09-25 06:46:18,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:46:18,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:46:18,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:46:18,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:46:18,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:18" (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 06:46:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:46:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:46:18,639 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:46:18,640 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:46:18,640 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:46:18,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:46:18,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:46:18,642 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:46:18,643 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:46:18,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:46:18,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:46:20,040 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:46:20,040 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:46:20,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:20 BoogieIcfgContainer [2020-09-25 06:46:20,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:46:20,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:46:20,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:46:20,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:46:20,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:46:17" (1/3) ... [2020-09-25 06:46:20,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711b853a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:20, skipping insertion in model container [2020-09-25 06:46:20,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:46:18" (2/3) ... [2020-09-25 06:46:20,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711b853a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:46:20, skipping insertion in model container [2020-09-25 06:46:20,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:46:20" (3/3) ... [2020-09-25 06:46:20,064 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label55.c [2020-09-25 06:46:20,080 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:46:20,093 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:46:20,122 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:46:20,164 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:46:20,164 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:46:20,164 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:46:20,164 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:46:20,164 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:46:20,165 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:46:20,165 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:46:20,165 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:46:20,203 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:46:20,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 06:46:20,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:20,227 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] [2020-09-25 06:46:20,227 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:20,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:20,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1120036286, now seen corresponding path program 1 times [2020-09-25 06:46:20,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:20,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1983671787] [2020-09-25 06:46:20,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:20,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:21,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:21,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:23,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:23,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:24,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:24,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:25,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:25,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:25,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:25,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 06:46:25,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:46:25,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-09-25 06:46:25,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:25,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:25,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:46:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 06:46:25,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 14 [2020-09-25 06:46:25,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:26,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:26,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:26,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:26,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:26,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 06:46:26,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:26,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:26,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:46:26,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:46:26,108 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 06:46:26,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1983671787] [2020-09-25 06:46:26,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:26,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:46:26,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166569815] [2020-09-25 06:46:26,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:46:26,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:26,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:46:26,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:46:26,148 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:46:28,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:28,533 INFO L93 Difference]: Finished difference Result 1396 states and 1850 transitions. [2020-09-25 06:46:28,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:46:28,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-09-25 06:46:28,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:28,576 INFO L225 Difference]: With dead ends: 1396 [2020-09-25 06:46:28,577 INFO L226 Difference]: Without dead ends: 788 [2020-09-25 06:46:28,589 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 06:46:28,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-09-25 06:46:28,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 665. [2020-09-25 06:46:28,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-09-25 06:46:28,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 813 transitions. [2020-09-25 06:46:28,743 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 813 transitions. Word has length 131 [2020-09-25 06:46:28,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:28,744 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 813 transitions. [2020-09-25 06:46:28,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:46:28,745 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 813 transitions. [2020-09-25 06:46:28,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 06:46:28,760 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:28,761 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] [2020-09-25 06:46:28,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:46:28,761 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:28,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:28,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1110069102, now seen corresponding path program 1 times [2020-09-25 06:46:28,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:28,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140623082] [2020-09-25 06:46:28,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:28,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:28,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:29,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:29,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:29,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:30,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:32,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:32,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:33,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:33,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:33,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:33,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 06:46:33,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:46:33,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 06:46:33,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:33,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:33,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:33,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:46:33,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 06:46:33,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:34,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:34,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:34,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:34,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:34,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:34,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:46:34,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:34,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:34,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:34,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:34,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:34,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:46:34,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:34,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:34,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:34,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:46:34,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:34,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:46:34,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:34,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:34,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:46:34,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:34,140 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 06:46:34,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140623082] [2020-09-25 06:46:34,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:34,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:34,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197478162] [2020-09-25 06:46:34,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:34,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:34,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:34,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:34,146 INFO L87 Difference]: Start difference. First operand 665 states and 813 transitions. Second operand 5 states. [2020-09-25 06:46:35,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:35,728 INFO L93 Difference]: Finished difference Result 1622 states and 2084 transitions. [2020-09-25 06:46:35,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:46:35,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-25 06:46:35,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:35,739 INFO L225 Difference]: With dead ends: 1622 [2020-09-25 06:46:35,739 INFO L226 Difference]: Without dead ends: 979 [2020-09-25 06:46:35,742 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 06:46:35,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2020-09-25 06:46:35,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 967. [2020-09-25 06:46:35,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2020-09-25 06:46:35,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1216 transitions. [2020-09-25 06:46:35,788 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1216 transitions. Word has length 149 [2020-09-25 06:46:35,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:35,789 INFO L479 AbstractCegarLoop]: Abstraction has 967 states and 1216 transitions. [2020-09-25 06:46:35,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:46:35,789 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1216 transitions. [2020-09-25 06:46:35,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 06:46:35,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:35,795 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:35,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:46:35,795 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:35,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:35,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1319537639, now seen corresponding path program 1 times [2020-09-25 06:46:35,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:35,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53872654] [2020-09-25 06:46:35,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:35,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:35,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:36,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:36,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:37,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:38,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:39,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:40,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:40,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 06:46:40,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:46:40,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 06:46:40,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:40,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:40,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:46:40,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:46:40,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 06:46:40,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:40,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:40,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:40,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:40,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:40,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:40,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:46:40,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:40,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:40,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:40,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:40,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:46:40,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:40,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:41,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:41,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:41,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 06:46:41,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:41,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-25 06:46:41,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:41,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:41,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:41,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:41,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 06:46:41,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:41,297 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:46:41,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53872654] [2020-09-25 06:46:41,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:46:41,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:46:41,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268099985] [2020-09-25 06:46:41,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:46:41,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:41,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:46:41,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:41,304 INFO L87 Difference]: Start difference. First operand 967 states and 1216 transitions. Second operand 7 states. [2020-09-25 06:46:44,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:44,136 INFO L93 Difference]: Finished difference Result 2781 states and 3659 transitions. [2020-09-25 06:46:44,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:46:44,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-09-25 06:46:44,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:44,149 INFO L225 Difference]: With dead ends: 2781 [2020-09-25 06:46:44,149 INFO L226 Difference]: Without dead ends: 1836 [2020-09-25 06:46:44,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:46:44,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1836 states. [2020-09-25 06:46:44,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1836 to 1731. [2020-09-25 06:46:44,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2020-09-25 06:46:44,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2202 transitions. [2020-09-25 06:46:44,219 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2202 transitions. Word has length 175 [2020-09-25 06:46:44,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:44,219 INFO L479 AbstractCegarLoop]: Abstraction has 1731 states and 2202 transitions. [2020-09-25 06:46:44,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:46:44,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2202 transitions. [2020-09-25 06:46:44,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 06:46:44,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:44,228 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:46:44,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:46:44,228 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:44,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:44,229 INFO L82 PathProgramCache]: Analyzing trace with hash 335216911, now seen corresponding path program 1 times [2020-09-25 06:46:44,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:44,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1310643522] [2020-09-25 06:46:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:44,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:44,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:44,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:44,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:44,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:48,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:48,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:49,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:49,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 06:46:49,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:46:49,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:46:49,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:49,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:46:49,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 06:46:49,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:49,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:49,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:49,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:49,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:49,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:49,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:46:49,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:49,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:49,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:49,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:49,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:49,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:49,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:46:49,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:49,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:46:49,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:49,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:49,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:49,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:49,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:46:49,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:49,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:46:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:49,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:49,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:49,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:46:49,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:49,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 06:46:49,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:49,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:49,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:49,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:46:49,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:46:49,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:49,622 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 06:46:49,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1310643522] [2020-09-25 06:46:49,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:49,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:46:49,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050874657] [2020-09-25 06:46:49,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:46:49,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:49,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:46:49,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:46:49,628 INFO L87 Difference]: Start difference. First operand 1731 states and 2202 transitions. Second operand 7 states. [2020-09-25 06:46:52,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:46:52,577 INFO L93 Difference]: Finished difference Result 5126 states and 7172 transitions. [2020-09-25 06:46:52,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:46:52,578 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 187 [2020-09-25 06:46:52,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:46:52,611 INFO L225 Difference]: With dead ends: 5126 [2020-09-25 06:46:52,611 INFO L226 Difference]: Without dead ends: 3417 [2020-09-25 06:46:52,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:46:52,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3417 states. [2020-09-25 06:46:52,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3417 to 3179. [2020-09-25 06:46:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-09-25 06:46:52,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 3978 transitions. [2020-09-25 06:46:52,751 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 3978 transitions. Word has length 187 [2020-09-25 06:46:52,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:46:52,751 INFO L479 AbstractCegarLoop]: Abstraction has 3179 states and 3978 transitions. [2020-09-25 06:46:52,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:46:52,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 3978 transitions. [2020-09-25 06:46:52,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 06:46:52,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:46:52,764 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:46:52,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:46:52,765 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:46:52,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:46:52,765 INFO L82 PathProgramCache]: Analyzing trace with hash 897918273, now seen corresponding path program 1 times [2020-09-25 06:46:52,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:46:52,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65360570] [2020-09-25 06:46:52,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:46:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:52,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:52,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:53,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:57,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:57,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:57,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:57,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 06:46:57,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:46:57,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 06:46:57,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:57,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:57,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:46:57,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 06:46:57,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 06:46:57,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:57,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:46:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:57,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:57,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:57,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:46:57,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:57,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:46:57,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:57,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:57,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:57,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:57,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:57,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:57,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:46:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:57,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:57,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:57,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:46:57,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:57,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 06:46:57,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:57,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:46:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:57,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:46:57,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:46:57,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 06:46:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:46:57,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:46:58,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:46:58,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:46:58,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:46:58,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 06:46:58,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:46:58,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:46:58,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:46:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:46:58,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:46:58,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:46:58,066 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 06:46:58,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65360570] [2020-09-25 06:46:58,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:46:58,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:46:58,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035756665] [2020-09-25 06:46:58,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:46:58,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:46:58,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:46:58,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:46:58,068 INFO L87 Difference]: Start difference. First operand 3179 states and 3978 transitions. Second operand 5 states. [2020-09-25 06:47:00,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:47:00,216 INFO L93 Difference]: Finished difference Result 7337 states and 9353 transitions. [2020-09-25 06:47:00,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:47:00,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 191 [2020-09-25 06:47:00,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:47:00,245 INFO L225 Difference]: With dead ends: 7337 [2020-09-25 06:47:00,245 INFO L226 Difference]: Without dead ends: 4362 [2020-09-25 06:47:00,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 06:47:00,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4362 states. [2020-09-25 06:47:00,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4362 to 4238. [2020-09-25 06:47:00,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4238 states. [2020-09-25 06:47:00,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5390 transitions. [2020-09-25 06:47:00,379 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5390 transitions. Word has length 191 [2020-09-25 06:47:00,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:47:00,381 INFO L479 AbstractCegarLoop]: Abstraction has 4238 states and 5390 transitions. [2020-09-25 06:47:00,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:47:00,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5390 transitions. [2020-09-25 06:47:00,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-25 06:47:00,397 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:47:00,397 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:47:00,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:47:00,398 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:47:00,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:47:00,398 INFO L82 PathProgramCache]: Analyzing trace with hash 955456564, now seen corresponding path program 1 times [2020-09-25 06:47:00,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:47:00,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527316286] [2020-09-25 06:47:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:47:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:00,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:00,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:00,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:00,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:02,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:05,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:05,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-09-25 06:47:05,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:47:05,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 06:47:05,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:05,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-09-25 06:47:05,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 06:47:05,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:05,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:47:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:05,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:05,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:05,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:47:05,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:47:05,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:05,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:05,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:05,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:05,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:47:05,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:05,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:05,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:05,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:47:05,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:05,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 06:47:05,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:05,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:47:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:47:05,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:47:05,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:47:05,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 06:47:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:47:05,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:47:05,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:47:05,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:47:05,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:47:05,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 06:47:05,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:47:05,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:47:05,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:47:05,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 06:47:05,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 06:47:05,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:47:05,656 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 06:47:05,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527316286] [2020-09-25 06:47:05,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:47:05,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 06:47:05,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650052459] [2020-09-25 06:47:05,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:47:05,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:47:05,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:47:05,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:47:05,660 INFO L87 Difference]: Start difference. First operand 4238 states and 5390 transitions. Second operand 5 states.