/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_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:44:55,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:44:55,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:44:55,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:44:55,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:44:55,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:44:55,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:44:55,467 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:44:55,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:44:55,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:44:55,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:44:55,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:44:55,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:44:55,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:44:55,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:44:55,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:44:55,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:44:55,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:44:55,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:44:55,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:44:55,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:44:55,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:44:55,490 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:44:55,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:44:55,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:44:55,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:44:55,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:44:55,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:44:55,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:44:55,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:44:55,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:44:55,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:44:55,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:44:55,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:44:55,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:44:55,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:44:55,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:44:55,502 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:44:55,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:44:55,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:44:55,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:44:55,506 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 06:44:55,532 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:44:55,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:44:55,534 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:44:55,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:44:55,534 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:44:55,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:44:55,535 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:44:55,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:44:55,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:44:55,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:44:55,535 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:44:55,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:44:55,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:44:55,536 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:44:55,536 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:44:55,536 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:44:55,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:44:55,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:44:55,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:44:55,537 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:44:55,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:44:55,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:44:55,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:44:55,538 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:44:55,538 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:44:55,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:44:55,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:44:55,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:44:55,539 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:44:55,539 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 06:44:56,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:44:56,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:44:56,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:44:56,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:44:56,054 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:44:56,055 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label29.c [2020-09-25 06:44:56,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1acc09196/8dfba2a653a449be83b884cfc75e54eb/FLAG309e95cb9 [2020-09-25 06:44:56,832 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:44:56,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label29.c [2020-09-25 06:44:56,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1acc09196/8dfba2a653a449be83b884cfc75e54eb/FLAG309e95cb9 [2020-09-25 06:44:57,064 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1acc09196/8dfba2a653a449be83b884cfc75e54eb [2020-09-25 06:44:57,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:44:57,082 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:44:57,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:44:57,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:44:57,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:44:57,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:44:57" (1/1) ... [2020-09-25 06:44:57,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:57, skipping insertion in model container [2020-09-25 06:44:57,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:44:57" (1/1) ... [2020-09-25 06:44:57,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:44:57,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:44:57,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:44:57,630 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:44:57,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:44:57,839 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:44:57,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:57 WrapperNode [2020-09-25 06:44:57,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:44:57,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:44:57,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:44:57,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:44:57,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:57" (1/1) ... [2020-09-25 06:44:57,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:57" (1/1) ... [2020-09-25 06:44:57,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:57" (1/1) ... [2020-09-25 06:44:57,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:57" (1/1) ... [2020-09-25 06:44:57,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:57" (1/1) ... [2020-09-25 06:44:57,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:57" (1/1) ... [2020-09-25 06:44:57,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:57" (1/1) ... [2020-09-25 06:44:57,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:44:57,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:44:57,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:44:57,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:44:57,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:57" (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 06:44:58,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:44:58,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:44:58,064 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 06:44:58,064 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:44:58,064 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 06:44:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:44:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:44:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 06:44:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:44:58,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:44:58,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:44:59,516 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:44:59,517 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:44:59,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:44:59 BoogieIcfgContainer [2020-09-25 06:44:59,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:44:59,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:44:59,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:44:59,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:44:59,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:44:57" (1/3) ... [2020-09-25 06:44:59,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:44:59, skipping insertion in model container [2020-09-25 06:44:59,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:44:57" (2/3) ... [2020-09-25 06:44:59,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1c64d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:44:59, skipping insertion in model container [2020-09-25 06:44:59,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:44:59" (3/3) ... [2020-09-25 06:44:59,549 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label29.c [2020-09-25 06:44:59,563 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:44:59,580 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:44:59,603 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:44:59,645 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:44:59,647 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:44:59,647 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:44:59,647 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:44:59,648 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:44:59,648 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:44:59,648 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:44:59,649 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:44:59,687 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 06:44:59,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 06:44:59,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:44:59,710 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] [2020-09-25 06:44:59,711 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:44:59,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:44:59,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1835465527, now seen corresponding path program 1 times [2020-09-25 06:44:59,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:44:59,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400466314] [2020-09-25 06:44:59,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:44:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:00,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:00,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:00,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:02,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:03,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:04,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:05,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:05,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 06:45:05,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:45:05,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 06:45:05,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:05,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:45:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 06:45:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 06:45:05,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:45:05,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:05,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:05,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:05,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:05,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:05,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 06:45:05,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:05,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:05,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:05,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:05,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 06:45:05,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:45:05,389 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 06:45:05,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400466314] [2020-09-25 06:45:05,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:45:05,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 06:45:05,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584873545] [2020-09-25 06:45:05,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 06:45:05,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:05,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 06:45:05,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 06:45:05,424 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 06:45:07,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:07,787 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 06:45:07,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 06:45:07,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-09-25 06:45:07,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:07,821 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 06:45:07,821 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 06:45:07,833 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 06:45:07,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 06:45:07,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 06:45:07,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 06:45:07,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 06:45:07,937 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 128 [2020-09-25 06:45:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:07,938 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 06:45:07,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 06:45:07,939 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 06:45:07,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 06:45:07,949 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:07,949 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] [2020-09-25 06:45:07,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:45:07,950 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:07,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:07,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1758478109, now seen corresponding path program 1 times [2020-09-25 06:45:07,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:07,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422181180] [2020-09-25 06:45:07,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:08,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:08,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:08,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:08,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:08,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:08,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:09,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:10,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:11,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:12,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:12,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:12,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 06:45:12,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 06:45:13,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 06:45:13,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:13,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:45:13,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 06:45:13,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:45:13,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:13,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:13,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:13,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:13,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:13,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:45:13,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:13,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:13,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:13,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:13,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:13,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 06:45:13,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:13,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:13,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:13,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:45:13,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:13,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:45:13,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:13,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:13,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:13,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 06:45:13,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:13,268 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 06:45:13,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422181180] [2020-09-25 06:45:13,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:13,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:13,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795402322] [2020-09-25 06:45:13,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:13,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:13,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:13,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:13,275 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 5 states. [2020-09-25 06:45:15,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:15,224 INFO L93 Difference]: Finished difference Result 1608 states and 2068 transitions. [2020-09-25 06:45:15,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:45:15,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-25 06:45:15,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:15,236 INFO L225 Difference]: With dead ends: 1608 [2020-09-25 06:45:15,236 INFO L226 Difference]: Without dead ends: 971 [2020-09-25 06:45:15,240 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 06:45:15,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-09-25 06:45:15,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 961. [2020-09-25 06:45:15,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2020-09-25 06:45:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1210 transitions. [2020-09-25 06:45:15,287 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1210 transitions. Word has length 146 [2020-09-25 06:45:15,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:15,288 INFO L479 AbstractCegarLoop]: Abstraction has 961 states and 1210 transitions. [2020-09-25 06:45:15,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:15,288 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1210 transitions. [2020-09-25 06:45:15,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 06:45:15,294 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:15,294 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] [2020-09-25 06:45:15,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:45:15,295 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:15,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:15,295 INFO L82 PathProgramCache]: Analyzing trace with hash -1227074990, now seen corresponding path program 1 times [2020-09-25 06:45:15,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:15,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405235132] [2020-09-25 06:45:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:15,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:15,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:15,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:18,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:18,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:20,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:20,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 06:45:20,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:45:20,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 06:45:20,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:20,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:20,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:45:20,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 06:45:20,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 06:45:20,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:20,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:20,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:20,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:20,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:20,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:20,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:45:20,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:20,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 06:45:20,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:20,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:20,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:20,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:20,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 06:45:20,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:20,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 06:45:20,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:20,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:20,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:45:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 06:45:20,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:45:20,681 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 06:45:20,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405235132] [2020-09-25 06:45:20,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:45:20,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 06:45:20,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459805204] [2020-09-25 06:45:20,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:45:20,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:20,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:45:20,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:45:20,687 INFO L87 Difference]: Start difference. First operand 961 states and 1210 transitions. Second operand 7 states. [2020-09-25 06:45:23,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:23,146 INFO L93 Difference]: Finished difference Result 2761 states and 3633 transitions. [2020-09-25 06:45:23,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:45:23,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-09-25 06:45:23,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:23,159 INFO L225 Difference]: With dead ends: 2761 [2020-09-25 06:45:23,159 INFO L226 Difference]: Without dead ends: 1822 [2020-09-25 06:45:23,164 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 06:45:23,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2020-09-25 06:45:23,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1719. [2020-09-25 06:45:23,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1719 states. [2020-09-25 06:45:23,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 2191 transitions. [2020-09-25 06:45:23,236 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 2191 transitions. Word has length 172 [2020-09-25 06:45:23,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:23,237 INFO L479 AbstractCegarLoop]: Abstraction has 1719 states and 2191 transitions. [2020-09-25 06:45:23,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:45:23,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 2191 transitions. [2020-09-25 06:45:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 06:45:23,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:23,245 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] [2020-09-25 06:45:23,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:45:23,246 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:23,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:23,246 INFO L82 PathProgramCache]: Analyzing trace with hash -285157092, now seen corresponding path program 1 times [2020-09-25 06:45:23,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:23,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318048049] [2020-09-25 06:45:23,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:23,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:23,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:23,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:23,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:27,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:27,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:28,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:28,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 06:45:28,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 06:45:28,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 06:45:28,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:28,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 06:45:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 06:45:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:28,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:28,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:28,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:28,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:28,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:28,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 06:45:28,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:28,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:28,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:28,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:28,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:28,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:28,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:28,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:28,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 06:45:28,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:28,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:45:28,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:28,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:28,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:28,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:28,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 06:45:28,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:28,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:45:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:28,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:28,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:28,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:45:28,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:28,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 06:45:28,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:28,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:28,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:28,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 06:45:28,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 06:45:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:28,665 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 06:45:28,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318048049] [2020-09-25 06:45:28,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:28,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 06:45:28,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046284470] [2020-09-25 06:45:28,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 06:45:28,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:28,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 06:45:28,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 06:45:28,673 INFO L87 Difference]: Start difference. First operand 1719 states and 2191 transitions. Second operand 7 states. [2020-09-25 06:45:31,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:31,318 INFO L93 Difference]: Finished difference Result 4696 states and 6327 transitions. [2020-09-25 06:45:31,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 06:45:31,319 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-09-25 06:45:31,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:31,340 INFO L225 Difference]: With dead ends: 4696 [2020-09-25 06:45:31,340 INFO L226 Difference]: Without dead ends: 2999 [2020-09-25 06:45:31,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:45:31,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2020-09-25 06:45:31,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 2979. [2020-09-25 06:45:31,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2979 states. [2020-09-25 06:45:31,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 3918 transitions. [2020-09-25 06:45:31,457 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 3918 transitions. Word has length 184 [2020-09-25 06:45:31,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:31,457 INFO L479 AbstractCegarLoop]: Abstraction has 2979 states and 3918 transitions. [2020-09-25 06:45:31,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 06:45:31,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 3918 transitions. [2020-09-25 06:45:31,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 06:45:31,472 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:31,472 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] [2020-09-25 06:45:31,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:45:31,472 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:31,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:31,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1852469802, now seen corresponding path program 1 times [2020-09-25 06:45:31,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:31,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112107058] [2020-09-25 06:45:31,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:31,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:31,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:31,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:34,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:34,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:35,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:36,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:36,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:36,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 06:45:36,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 06:45:36,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 06:45:36,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:36,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:36,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:36,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-25 06:45:36,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 06:45:36,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 06:45:36,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:36,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:36,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:36,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:36,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:36,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:45:36,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:36,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:36,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:36,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:36,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:36,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 06:45:36,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:36,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:36,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:36,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 06:45:36,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:36,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 06:45:36,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:36,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:36,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:36,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:36,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:36,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:36,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 06:45:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:36,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:36,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:36,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 06:45:36,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:36,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 06:45:36,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:36,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 06:45:36,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:36,863 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 06:45:36,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112107058] [2020-09-25 06:45:36,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:36,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:36,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017944312] [2020-09-25 06:45:36,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:36,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:36,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:36,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:36,865 INFO L87 Difference]: Start difference. First operand 2979 states and 3918 transitions. Second operand 5 states. [2020-09-25 06:45:38,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:45:38,625 INFO L93 Difference]: Finished difference Result 7306 states and 9708 transitions. [2020-09-25 06:45:38,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 06:45:38,625 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2020-09-25 06:45:38,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:45:38,649 INFO L225 Difference]: With dead ends: 7306 [2020-09-25 06:45:38,650 INFO L226 Difference]: Without dead ends: 4349 [2020-09-25 06:45:38,660 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 06:45:38,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4349 states. [2020-09-25 06:45:38,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4349 to 4184. [2020-09-25 06:45:38,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4184 states. [2020-09-25 06:45:38,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4184 states to 4184 states and 5557 transitions. [2020-09-25 06:45:38,792 INFO L78 Accepts]: Start accepts. Automaton has 4184 states and 5557 transitions. Word has length 188 [2020-09-25 06:45:38,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:45:38,793 INFO L479 AbstractCegarLoop]: Abstraction has 4184 states and 5557 transitions. [2020-09-25 06:45:38,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 06:45:38,793 INFO L276 IsEmpty]: Start isEmpty. Operand 4184 states and 5557 transitions. [2020-09-25 06:45:38,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-25 06:45:38,812 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:45:38,813 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 06:45:38,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:45:38,813 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:45:38,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:45:38,813 INFO L82 PathProgramCache]: Analyzing trace with hash 381318114, now seen corresponding path program 1 times [2020-09-25 06:45:38,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:45:38,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656159764] [2020-09-25 06:45:38,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:45:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:38,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:38,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:39,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:39,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:41,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:43,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:43,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 06:45:43,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 06:45:43,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 06:45:43,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:43,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:43,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:45:43,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-09-25 06:45:43,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 06:45:43,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 06:45:44,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:45:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:44,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:44,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 06:45:44,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:44,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 06:45:44,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:44,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:44,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:45:44,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:44,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:45:44,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:44,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 06:45:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:45:44,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:45:44,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:45:44,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 06:45:44,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:45:44,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 06:45:44,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:45:44,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:45:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:45:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:45:44,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 06:45:44,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:45:44,345 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:45:44,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656159764] [2020-09-25 06:45:44,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:45:44,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 06:45:44,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543256996] [2020-09-25 06:45:44,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 06:45:44,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:45:44,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 06:45:44,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 06:45:44,349 INFO L87 Difference]: Start difference. First operand 4184 states and 5557 transitions. Second operand 5 states.