/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:25:13,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:25:13,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:25:13,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:25:13,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:25:13,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:25:13,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:25:13,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:25:13,967 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:25:13,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:25:13,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:25:13,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:25:13,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:25:13,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:25:13,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:25:13,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:25:13,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:25:13,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:25:13,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:25:13,979 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:25:13,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:25:13,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:25:13,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:25:13,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:25:13,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:25:13,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:25:13,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:25:13,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:25:13,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:25:13,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:25:13,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:25:13,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:25:13,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:25:13,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:25:13,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:25:13,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:25:13,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:25:13,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:25:13,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:25:13,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:25:13,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:25:13,997 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 12:25:14,024 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:25:14,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:25:14,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:25:14,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:25:14,027 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:25:14,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:25:14,027 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:25:14,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:25:14,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:25:14,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:25:14,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:25:14,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:25:14,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:25:14,028 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:25:14,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:25:14,029 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:25:14,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:25:14,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:25:14,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:25:14,030 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:25:14,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:25:14,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:25:14,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:25:14,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:25:14,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:25:14,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:25:14,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:25:14,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:25:14,032 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:25:14,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:25:14,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:25:14,487 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:25:14,495 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:25:14,497 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:25:14,499 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:25:14,500 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label48.c [2020-09-25 12:25:14,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fbf8e7a6/ac751fe72a5c42bc8f08d4373c332d24/FLAG1e1453661 [2020-09-25 12:25:15,351 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:25:15,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label48.c [2020-09-25 12:25:15,365 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fbf8e7a6/ac751fe72a5c42bc8f08d4373c332d24/FLAG1e1453661 [2020-09-25 12:25:15,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fbf8e7a6/ac751fe72a5c42bc8f08d4373c332d24 [2020-09-25 12:25:15,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:25:15,534 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:25:15,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:15,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:25:15,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:25:15,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:15" (1/1) ... [2020-09-25 12:25:15,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1987833a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:15, skipping insertion in model container [2020-09-25 12:25:15,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:15" (1/1) ... [2020-09-25 12:25:15,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:25:15,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:25:16,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:16,174 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:25:16,348 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:16,374 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:25:16,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:16 WrapperNode [2020-09-25 12:25:16,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:16,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:25:16,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:25:16,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:25:16,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:16" (1/1) ... [2020-09-25 12:25:16,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:16" (1/1) ... [2020-09-25 12:25:16,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:16" (1/1) ... [2020-09-25 12:25:16,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:16" (1/1) ... [2020-09-25 12:25:16,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:16" (1/1) ... [2020-09-25 12:25:16,494 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:16" (1/1) ... [2020-09-25 12:25:16,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:16" (1/1) ... [2020-09-25 12:25:16,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:25:16,505 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:25:16,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:25:16,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:25:16,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:16" (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 12:25:16,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:25:16,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:25:16,581 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:25:16,582 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:25:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:25:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:25:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:25:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:25:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:25:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:25:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:25:17,977 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:25:17,978 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:25:17,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:17 BoogieIcfgContainer [2020-09-25 12:25:17,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:25:17,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:25:17,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:25:18,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:25:18,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:25:15" (1/3) ... [2020-09-25 12:25:18,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b3a561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:18, skipping insertion in model container [2020-09-25 12:25:18,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:16" (2/3) ... [2020-09-25 12:25:18,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15b3a561 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:18, skipping insertion in model container [2020-09-25 12:25:18,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:17" (3/3) ... [2020-09-25 12:25:18,008 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label48.c [2020-09-25 12:25:18,020 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:25:18,036 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:25:18,059 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:25:18,098 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:25:18,098 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:25:18,098 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:25:18,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:25:18,098 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:25:18,099 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:25:18,099 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:25:18,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:25:18,133 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:25:18,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 12:25:18,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:18,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:18,159 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:18,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:18,166 INFO L82 PathProgramCache]: Analyzing trace with hash 192415938, now seen corresponding path program 1 times [2020-09-25 12:25:18,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:18,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616197933] [2020-09-25 12:25:18,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:18,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:19,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:20,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:20,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:21,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:21,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:23,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:23,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 12:25:23,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:25:23,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 12:25:23,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:23,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:23,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:25:23,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:25:23,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 12:25:23,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:25:23,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:23,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:23,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:23,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:23,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:23,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:23,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 12:25:23,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:23,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:23,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 12:25:23,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:23,882 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 12:25:23,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616197933] [2020-09-25 12:25:23,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:25:23,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:25:23,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323430542] [2020-09-25 12:25:23,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:25:23,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:23,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:25:23,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:25:23,917 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:25:26,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:26,142 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 12:25:26,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:25:26,146 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-09-25 12:25:26,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:26,181 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 12:25:26,181 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 12:25:26,193 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 12:25:26,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 12:25:26,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 12:25:26,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 12:25:26,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 12:25:26,319 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 163 [2020-09-25 12:25:26,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:26,320 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 12:25:26,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:25:26,321 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 12:25:26,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 12:25:26,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:26,331 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:26,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:25:26,332 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:26,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:26,332 INFO L82 PathProgramCache]: Analyzing trace with hash 157617646, now seen corresponding path program 1 times [2020-09-25 12:25:26,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:26,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572714742] [2020-09-25 12:25:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:26,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:26,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:26,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:26,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:26,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:27,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:31,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:31,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:31,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:31,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 12:25:31,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:25:31,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-09-25 12:25:31,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:31,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:31,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:31,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 12:25:31,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 12:25:31,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:25:31,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:31,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:31,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:31,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:31,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:31,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:25:31,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:31,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:31,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:31,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:31,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:31,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:25:31,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:31,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:31,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:31,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:25:31,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:31,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:25:31,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:31,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:25:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:25:31,862 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 12:25:31,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572714742] [2020-09-25 12:25:31,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:31,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:25:31,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818140997] [2020-09-25 12:25:31,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:25:31,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:31,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:25:31,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:31,868 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 12:25:34,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:34,199 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-25 12:25:34,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:25:34,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 12:25:34,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:34,217 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 12:25:34,217 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 12:25:34,221 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 12:25:34,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 12:25:34,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-25 12:25:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-25 12:25:34,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-25 12:25:34,278 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 181 [2020-09-25 12:25:34,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:34,279 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-25 12:25:34,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:25:34,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-25 12:25:34,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-09-25 12:25:34,286 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:34,287 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:34,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:25:34,287 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:34,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:34,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1809000221, now seen corresponding path program 1 times [2020-09-25 12:25:34,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:34,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534056752] [2020-09-25 12:25:34,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:34,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:34,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:34,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:35,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:36,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:37,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:38,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:38,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:39,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:39,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-09-25 12:25:39,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:25:39,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 12:25:39,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:39,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:25:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:25:39,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 12:25:39,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:39,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:39,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:39,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:39,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:39,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:39,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 12:25:39,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:39,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:39,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:39,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:39,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:25:39,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:39,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:39,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:39,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:39,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:39,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:25:39,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:25:39,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 12:25:39,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:39,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:39,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:25:39,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:25:39,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:40,005 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:40,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534056752] [2020-09-25 12:25:40,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:40,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:25:40,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699263025] [2020-09-25 12:25:40,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:25:40,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:40,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:25:40,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:25:40,010 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 10 states. [2020-09-25 12:25:44,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:44,060 INFO L93 Difference]: Finished difference Result 4003 states and 5529 transitions. [2020-09-25 12:25:44,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 12:25:44,061 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 187 [2020-09-25 12:25:44,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:44,081 INFO L225 Difference]: With dead ends: 4003 [2020-09-25 12:25:44,081 INFO L226 Difference]: Without dead ends: 2970 [2020-09-25 12:25:44,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:25:44,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2020-09-25 12:25:44,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 2284. [2020-09-25 12:25:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2284 states. [2020-09-25 12:25:44,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 2890 transitions. [2020-09-25 12:25:44,187 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 2890 transitions. Word has length 187 [2020-09-25 12:25:44,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:44,187 INFO L479 AbstractCegarLoop]: Abstraction has 2284 states and 2890 transitions. [2020-09-25 12:25:44,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:25:44,188 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 2890 transitions. [2020-09-25 12:25:44,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 12:25:44,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:44,198 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:25:44,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:25:44,199 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:44,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:44,199 INFO L82 PathProgramCache]: Analyzing trace with hash 559246375, now seen corresponding path program 1 times [2020-09-25 12:25:44,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:44,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467045982] [2020-09-25 12:25:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:44,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:44,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:44,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:44,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:49,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:49,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:49,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:49,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 12:25:49,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:25:49,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-09-25 12:25:49,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:49,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:49,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:49,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 12:25:49,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-09-25 12:25:49,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:49,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:49,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:49,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:49,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:49,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:25:49,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:49,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:49,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:49,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:49,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:49,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:49,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 12:25:49,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:49,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 12:25:49,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:49,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:25:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:49,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:25:49,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:49,518 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:25:49,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467045982] [2020-09-25 12:25:49,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:49,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:25:49,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191076122] [2020-09-25 12:25:49,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:25:49,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:49,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:25:49,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:25:49,521 INFO L87 Difference]: Start difference. First operand 2284 states and 2890 transitions. Second operand 5 states. [2020-09-25 12:25:51,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:25:51,531 INFO L93 Difference]: Finished difference Result 5636 states and 7318 transitions. [2020-09-25 12:25:51,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:25:51,531 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-09-25 12:25:51,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:25:51,544 INFO L225 Difference]: With dead ends: 5636 [2020-09-25 12:25:51,544 INFO L226 Difference]: Without dead ends: 2227 [2020-09-25 12:25:51,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 12:25:51,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2227 states. [2020-09-25 12:25:51,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2227 to 2203. [2020-09-25 12:25:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2203 states. [2020-09-25 12:25:51,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2724 transitions. [2020-09-25 12:25:51,617 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2724 transitions. Word has length 197 [2020-09-25 12:25:51,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:25:51,617 INFO L479 AbstractCegarLoop]: Abstraction has 2203 states and 2724 transitions. [2020-09-25 12:25:51,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:25:51,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2724 transitions. [2020-09-25 12:25:51,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 12:25:51,626 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:51,627 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:25:51,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:25:51,627 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:51,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:51,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1532689640, now seen corresponding path program 1 times [2020-09-25 12:25:51,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:51,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448301148] [2020-09-25 12:25:51,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:51,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:51,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:51,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:52,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:52,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:53,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:54,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:55,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:56,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:56,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:56,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 12:25:56,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:25:56,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 12:25:56,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:56,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:56,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:25:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 12:25:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 12:25:56,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:56,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:25:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:56,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:56,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:56,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:25:56,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:56,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:25:56,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:56,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:56,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:25:56,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:56,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:25:56,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:25:56,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:25:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:56,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:57,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:57,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:25:57,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:25:57,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 12:25:57,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:57,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:57,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:57,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:25:57,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 12:25:57,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:57,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 12:25:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:57,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:57,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:25:57,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:25:57,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 12:25:57,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:25:57,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 12:25:57,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:25:57,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:25:57,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:25:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:25:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 12:25:57,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:25:57,326 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:25:57,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448301148] [2020-09-25 12:25:57,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:25:57,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:25:57,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713355729] [2020-09-25 12:25:57,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:25:57,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:25:57,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:25:57,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:25:57,329 INFO L87 Difference]: Start difference. First operand 2203 states and 2724 transitions. Second operand 10 states. [2020-09-25 12:26:02,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:02,196 INFO L93 Difference]: Finished difference Result 6261 states and 7850 transitions. [2020-09-25 12:26:02,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 12:26:02,197 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 201 [2020-09-25 12:26:02,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:02,214 INFO L225 Difference]: With dead ends: 6261 [2020-09-25 12:26:02,214 INFO L226 Difference]: Without dead ends: 3508 [2020-09-25 12:26:02,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:26:02,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3508 states. [2020-09-25 12:26:02,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3508 to 3321. [2020-09-25 12:26:02,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3321 states. [2020-09-25 12:26:02,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3321 states to 3321 states and 4019 transitions. [2020-09-25 12:26:02,334 INFO L78 Accepts]: Start accepts. Automaton has 3321 states and 4019 transitions. Word has length 201 [2020-09-25 12:26:02,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:02,335 INFO L479 AbstractCegarLoop]: Abstraction has 3321 states and 4019 transitions. [2020-09-25 12:26:02,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:26:02,336 INFO L276 IsEmpty]: Start isEmpty. Operand 3321 states and 4019 transitions. [2020-09-25 12:26:02,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-09-25 12:26:02,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:02,357 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:02,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:26:02,357 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:02,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:02,358 INFO L82 PathProgramCache]: Analyzing trace with hash 867383139, now seen corresponding path program 1 times [2020-09-25 12:26:02,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:02,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673025867] [2020-09-25 12:26:02,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:02,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:02,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:02,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:02,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:03,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking...