/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/Problem01_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:24:43,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:24:43,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:24:43,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:24:43,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:24:43,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:24:43,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:24:43,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:24:43,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:24:43,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:24:43,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:24:43,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:24:43,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:24:43,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:24:43,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:24:43,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:24:43,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:24:43,952 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:24:43,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:24:43,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:24:43,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:24:43,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:24:43,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:24:43,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:24:43,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:24:43,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:24:43,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:24:43,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:24:43,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:24:43,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:24:43,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:24:43,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:24:43,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:24:43,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:24:43,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:24:43,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:24:43,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:24:43,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:24:43,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:24:43,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:24:43,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:24:43,976 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 [2020-09-24 19:24:44,020 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:24:44,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:24:44,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:24:44,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:24:44,023 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:24:44,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:24:44,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:24:44,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:24:44,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:24:44,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:24:44,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:24:44,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:24:44,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:24:44,026 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:24:44,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:24:44,028 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:24:44,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:24:44,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:24:44,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:24:44,028 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:24:44,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:24:44,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:24:44,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:24:44,029 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:24:44,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:24:44,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:24:44,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:24:44,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:24:44,030 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:24:44,031 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:24:44,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:24:44,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:24:44,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:24:44,556 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:24:44,559 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:24:44,560 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-24 19:24:44,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e7c99ff9/da959fb4ec374b6d87e010d294c807cd/FLAGd4b82f5b5 [2020-09-24 19:24:45,396 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:24:45,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-24 19:24:45,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e7c99ff9/da959fb4ec374b6d87e010d294c807cd/FLAGd4b82f5b5 [2020-09-24 19:24:45,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3e7c99ff9/da959fb4ec374b6d87e010d294c807cd [2020-09-24 19:24:45,570 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:24:45,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:24:45,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:24:45,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:24:45,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:24:45,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:24:45" (1/1) ... [2020-09-24 19:24:45,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:45, skipping insertion in model container [2020-09-24 19:24:45,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:24:45" (1/1) ... [2020-09-24 19:24:45,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:24:45,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:24:46,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:24:46,115 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:24:46,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:24:46,343 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:24:46,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:46 WrapperNode [2020-09-24 19:24:46,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:24:46,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:24:46,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:24:46,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:24:46,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:46" (1/1) ... [2020-09-24 19:24:46,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:46" (1/1) ... [2020-09-24 19:24:46,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:46" (1/1) ... [2020-09-24 19:24:46,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:46" (1/1) ... [2020-09-24 19:24:46,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:46" (1/1) ... [2020-09-24 19:24:46,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:46" (1/1) ... [2020-09-24 19:24:46,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:46" (1/1) ... [2020-09-24 19:24:46,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:24:46,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:24:46,487 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:24:46,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:24:46,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:46" (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 [2020-09-24 19:24:46,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:24:46,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:24:46,559 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:24:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:24:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:24:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:24:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:24:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:24:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:24:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:24:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:24:47,956 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:24:47,957 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:24:47,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:24:47 BoogieIcfgContainer [2020-09-24 19:24:47,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:24:47,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:24:47,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:24:47,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:24:47,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:24:45" (1/3) ... [2020-09-24 19:24:47,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:24:47, skipping insertion in model container [2020-09-24 19:24:47,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:24:46" (2/3) ... [2020-09-24 19:24:47,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:24:47, skipping insertion in model container [2020-09-24 19:24:47,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:24:47" (3/3) ... [2020-09-24 19:24:47,976 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2020-09-24 19:24:47,988 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:24:47,999 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:24:48,021 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:24:48,054 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:24:48,055 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:24:48,055 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:24:48,055 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:24:48,055 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:24:48,055 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:24:48,056 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:24:48,056 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:24:48,093 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 19:24:48,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-24 19:24:48,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:48,113 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] [2020-09-24 19:24:48,114 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:48,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:48,121 INFO L82 PathProgramCache]: Analyzing trace with hash 576098423, now seen corresponding path program 1 times [2020-09-24 19:24:48,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:48,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866462069] [2020-09-24 19:24:48,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:48,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:48,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:49,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:49,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:49,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 19:24:49,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:24:49,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1187 [2020-09-24 19:24:49,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:49,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:24:49,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:24:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-24 19:24:49,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:24:49,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:49,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:49,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:49,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:24:49,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:49,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 19:24:49,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:49,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:24:49,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:49,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:24:49,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:49,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:49,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866462069] [2020-09-24 19:24:49,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:49,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:24:49,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486329341] [2020-09-24 19:24:49,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:24:49,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:49,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:24:49,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:24:49,932 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-24 19:24:53,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:53,394 INFO L93 Difference]: Finished difference Result 1449 states and 1984 transitions. [2020-09-24 19:24:53,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:24:53,397 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-09-24 19:24:53,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:53,426 INFO L225 Difference]: With dead ends: 1449 [2020-09-24 19:24:53,426 INFO L226 Difference]: Without dead ends: 870 [2020-09-24 19:24:53,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:24:53,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-09-24 19:24:53,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 746. [2020-09-24 19:24:53,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-09-24 19:24:53,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 908 transitions. [2020-09-24 19:24:53,552 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 908 transitions. Word has length 122 [2020-09-24 19:24:53,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:53,553 INFO L479 AbstractCegarLoop]: Abstraction has 746 states and 908 transitions. [2020-09-24 19:24:53,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:24:53,554 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 908 transitions. [2020-09-24 19:24:53,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 19:24:53,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:53,564 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 19:24:53,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:24:53,564 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:53,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:53,565 INFO L82 PathProgramCache]: Analyzing trace with hash 812216710, now seen corresponding path program 1 times [2020-09-24 19:24:53,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:53,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1481065098] [2020-09-24 19:24:53,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:53,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:53,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:54,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:54,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-24 19:24:54,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:24:54,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-24 19:24:54,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:54,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:24:54,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:24:54,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-24 19:24:54,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:54,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:54,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:54,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:54,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:24:54,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:54,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 19:24:54,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:54,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:24:54,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:54,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:24:54,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:24:54,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:24:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:54,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:54,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:54,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:24:54,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:54,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 19:24:54,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:54,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:24:54,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:54,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:24:54,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:24:54,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:54,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1481065098] [2020-09-24 19:24:54,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:24:54,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:24:54,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692832052] [2020-09-24 19:24:54,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:24:54,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:54,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:24:54,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:24:54,967 INFO L87 Difference]: Start difference. First operand 746 states and 908 transitions. Second operand 5 states. [2020-09-24 19:24:57,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:24:57,199 INFO L93 Difference]: Finished difference Result 1955 states and 2479 transitions. [2020-09-24 19:24:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:24:57,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-09-24 19:24:57,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:24:57,212 INFO L225 Difference]: With dead ends: 1955 [2020-09-24 19:24:57,213 INFO L226 Difference]: Without dead ends: 1233 [2020-09-24 19:24:57,217 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 [2020-09-24 19:24:57,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2020-09-24 19:24:57,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1177. [2020-09-24 19:24:57,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-09-24 19:24:57,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1467 transitions. [2020-09-24 19:24:57,299 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1467 transitions. Word has length 143 [2020-09-24 19:24:57,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:24:57,302 INFO L479 AbstractCegarLoop]: Abstraction has 1177 states and 1467 transitions. [2020-09-24 19:24:57,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:24:57,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1467 transitions. [2020-09-24 19:24:57,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-24 19:24:57,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:24:57,310 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:24:57,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:24:57,311 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:24:57,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:24:57,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1603318008, now seen corresponding path program 1 times [2020-09-24 19:24:57,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:24:57,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897842519] [2020-09-24 19:24:57,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:24:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:57,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:57,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:57,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:58,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:58,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-24 19:24:58,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:24:58,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1039 [2020-09-24 19:24:58,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:58,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:24:58,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:24:58,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 19:24:58,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:58,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:24:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:58,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:58,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:58,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:24:58,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:58,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 19:24:58,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:58,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:24:58,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:24:58,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:24:58,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:24:58,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:24:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:24:58,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:24:58,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:24:58,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 19:24:58,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:24:58,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-24 19:24:58,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:24:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:24:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:24:58,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 19:24:58,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:24:58,849 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:24:58,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897842519] [2020-09-24 19:24:58,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:24:58,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:24:58,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538201943] [2020-09-24 19:24:58,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:24:58,853 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:24:58,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:24:58,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:24:58,854 INFO L87 Difference]: Start difference. First operand 1177 states and 1467 transitions. Second operand 7 states. [2020-09-24 19:25:00,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:00,851 INFO L93 Difference]: Finished difference Result 3094 states and 4009 transitions. [2020-09-24 19:25:00,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:25:00,853 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-09-24 19:25:00,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:00,866 INFO L225 Difference]: With dead ends: 3094 [2020-09-24 19:25:00,867 INFO L226 Difference]: Without dead ends: 1941 [2020-09-24 19:25:00,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:25:00,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2020-09-24 19:25:00,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1904. [2020-09-24 19:25:00,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1904 states. [2020-09-24 19:25:00,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 2382 transitions. [2020-09-24 19:25:00,954 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 2382 transitions. Word has length 159 [2020-09-24 19:25:00,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:00,955 INFO L479 AbstractCegarLoop]: Abstraction has 1904 states and 2382 transitions. [2020-09-24 19:25:00,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 2382 transitions. [2020-09-24 19:25:00,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-24 19:25:00,968 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:00,968 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:00,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:25:00,969 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:00,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:00,970 INFO L82 PathProgramCache]: Analyzing trace with hash -598927294, now seen corresponding path program 1 times [2020-09-24 19:25:00,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:00,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044417762] [2020-09-24 19:25:00,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:01,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:01,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:02,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:02,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-24 19:25:02,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:02,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-24 19:25:02,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:02,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:02,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:25:02,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 19:25:02,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:02,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:02,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:02,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:02,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:02,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:02,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:25:02,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:02,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:02,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:02,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:02,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:02,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:02,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:02,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:02,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:02,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:02,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 19:25:02,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:02,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:02,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:02,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:25:02,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:02,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:25:02,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:02,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:02,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:02,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 19:25:02,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:02,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 19:25:02,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:02,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:02,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:02,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:25:02,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:02,489 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:02,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044417762] [2020-09-24 19:25:02,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:02,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:02,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238331195] [2020-09-24 19:25:02,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:02,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:02,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:02,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:02,496 INFO L87 Difference]: Start difference. First operand 1904 states and 2382 transitions. Second operand 7 states. [2020-09-24 19:25:04,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:04,740 INFO L93 Difference]: Finished difference Result 4387 states and 5598 transitions. [2020-09-24 19:25:04,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:25:04,741 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-09-24 19:25:04,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:04,759 INFO L225 Difference]: With dead ends: 4387 [2020-09-24 19:25:04,759 INFO L226 Difference]: Without dead ends: 2507 [2020-09-24 19:25:04,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:25:04,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2020-09-24 19:25:04,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2051. [2020-09-24 19:25:04,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2051 states. [2020-09-24 19:25:04,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 2574 transitions. [2020-09-24 19:25:04,852 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 2574 transitions. Word has length 184 [2020-09-24 19:25:04,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:04,852 INFO L479 AbstractCegarLoop]: Abstraction has 2051 states and 2574 transitions. [2020-09-24 19:25:04,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:04,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 2574 transitions. [2020-09-24 19:25:04,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-09-24 19:25:04,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:04,864 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, 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] [2020-09-24 19:25:04,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:25:04,864 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:04,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:04,865 INFO L82 PathProgramCache]: Analyzing trace with hash -488821343, now seen corresponding path program 1 times [2020-09-24 19:25:04,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:04,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058617108] [2020-09-24 19:25:04,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:04,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:05,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:05,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:05,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-09-24 19:25:05,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:05,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-24 19:25:05,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:05,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:05,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 19:25:05,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 19:25:05,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:06,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:06,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:06,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:06,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:06,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:06,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:25:06,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:06,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:06,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:06,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:06,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:06,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:06,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:06,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:06,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:25:06,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:06,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 19:25:06,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:06,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:06,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:06,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 19:25:06,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:06,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 19:25:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:06,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:06,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:06,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:25:06,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:06,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-24 19:25:06,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:06,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:06,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:06,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 19:25:06,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:06,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058617108] [2020-09-24 19:25:06,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:06,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:06,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273734346] [2020-09-24 19:25:06,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:06,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:06,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:06,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:06,360 INFO L87 Difference]: Start difference. First operand 2051 states and 2574 transitions. Second operand 7 states. [2020-09-24 19:25:08,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:08,998 INFO L93 Difference]: Finished difference Result 5290 states and 6862 transitions. [2020-09-24 19:25:08,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:25:08,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-09-24 19:25:09,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:09,023 INFO L225 Difference]: With dead ends: 5290 [2020-09-24 19:25:09,023 INFO L226 Difference]: Without dead ends: 3263 [2020-09-24 19:25:09,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:25:09,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2020-09-24 19:25:09,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 2711. [2020-09-24 19:25:09,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2711 states. [2020-09-24 19:25:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3404 transitions. [2020-09-24 19:25:09,141 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3404 transitions. Word has length 206 [2020-09-24 19:25:09,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:09,141 INFO L479 AbstractCegarLoop]: Abstraction has 2711 states and 3404 transitions. [2020-09-24 19:25:09,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:09,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3404 transitions. [2020-09-24 19:25:09,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-24 19:25:09,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:09,155 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:09,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:25:09,156 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:09,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:09,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1509233683, now seen corresponding path program 1 times [2020-09-24 19:25:09,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:09,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579842438] [2020-09-24 19:25:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:09,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:09,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:10,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:10,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:10,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:10,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:10,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-24 19:25:10,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:25:10,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1045 [2020-09-24 19:25:10,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:25:10,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:10,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:10,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:10,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:10,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:10,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:10,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:10,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:10,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:25:10,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:10,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:10,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:10,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:10,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:10,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:10,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:10,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:25:10,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:10,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 19:25:10,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:10,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:25:10,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:10,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:25:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:10,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:10,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:10,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:10,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:10,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 19:25:10,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:10,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:10,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:10,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:25:10,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:10,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 19:25:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:10,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:10,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:10,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 19:25:10,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:10,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 19:25:10,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:10,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 19:25:10,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:10,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 96 proven. 14 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-24 19:25:10,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579842438] [2020-09-24 19:25:10,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:10,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:10,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644266888] [2020-09-24 19:25:10,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:10,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:10,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:10,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:10,892 INFO L87 Difference]: Start difference. First operand 2711 states and 3404 transitions. Second operand 7 states. [2020-09-24 19:25:13,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:13,968 INFO L93 Difference]: Finished difference Result 5745 states and 7277 transitions. [2020-09-24 19:25:13,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:25:13,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-09-24 19:25:13,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:13,984 INFO L225 Difference]: With dead ends: 5745 [2020-09-24 19:25:13,984 INFO L226 Difference]: Without dead ends: 3199 [2020-09-24 19:25:13,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:25:13,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3199 states. [2020-09-24 19:25:14,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3199 to 3162. [2020-09-24 19:25:14,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3162 states. [2020-09-24 19:25:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3162 states to 3162 states and 3960 transitions. [2020-09-24 19:25:14,074 INFO L78 Accepts]: Start accepts. Automaton has 3162 states and 3960 transitions. Word has length 227 [2020-09-24 19:25:14,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:14,075 INFO L479 AbstractCegarLoop]: Abstraction has 3162 states and 3960 transitions. [2020-09-24 19:25:14,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:14,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3162 states and 3960 transitions. [2020-09-24 19:25:14,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-09-24 19:25:14,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:14,090 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:14,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:25:14,090 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:14,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:14,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1123155700, now seen corresponding path program 1 times [2020-09-24 19:25:14,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:14,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815132345] [2020-09-24 19:25:14,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:14,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:14,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:14,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:15,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-24 19:25:15,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:15,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1013 [2020-09-24 19:25:15,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:15,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-24 19:25:15,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 19:25:15,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:15,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:15,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:15,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:15,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:15,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:15,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:25:15,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:15,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:15,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:15,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:15,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:15,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:15,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:15,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:25:15,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:15,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 19:25:15,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:15,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:15,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:15,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:25:15,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:15,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 19:25:15,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:15,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:15,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:15,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:25:15,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:15,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-24 19:25:15,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:15,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 19:25:15,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:15,797 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:25:15,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815132345] [2020-09-24 19:25:15,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:15,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:25:15,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876830500] [2020-09-24 19:25:15,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:25:15,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:15,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:25:15,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:25:15,802 INFO L87 Difference]: Start difference. First operand 3162 states and 3960 transitions. Second operand 7 states. [2020-09-24 19:25:18,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:18,835 INFO L93 Difference]: Finished difference Result 6785 states and 8891 transitions. [2020-09-24 19:25:18,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:25:18,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-09-24 19:25:18,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:18,861 INFO L225 Difference]: With dead ends: 6785 [2020-09-24 19:25:18,861 INFO L226 Difference]: Without dead ends: 3788 [2020-09-24 19:25:18,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:25:18,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2020-09-24 19:25:18,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 3166. [2020-09-24 19:25:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3166 states. [2020-09-24 19:25:18,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3166 states to 3166 states and 3788 transitions. [2020-09-24 19:25:18,999 INFO L78 Accepts]: Start accepts. Automaton has 3166 states and 3788 transitions. Word has length 232 [2020-09-24 19:25:18,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:18,999 INFO L479 AbstractCegarLoop]: Abstraction has 3166 states and 3788 transitions. [2020-09-24 19:25:19,000 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:25:19,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3166 states and 3788 transitions. [2020-09-24 19:25:19,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-09-24 19:25:19,015 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:19,015 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:19,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:25:19,016 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:19,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:19,016 INFO L82 PathProgramCache]: Analyzing trace with hash -506311127, now seen corresponding path program 1 times [2020-09-24 19:25:19,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:19,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608054495] [2020-09-24 19:25:19,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:19,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:19,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:20,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:20,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-09-24 19:25:20,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:20,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-24 19:25:20,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:20,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:20,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 19:25:20,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:20,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:20,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:20,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:20,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:20,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:20,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:20,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:25:20,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:20,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:20,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:20,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:20,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:20,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:20,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:20,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:20,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:25:20,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:20,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 19:25:20,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:20,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:20,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:20,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:25:20,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:20,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 19:25:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:20,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:20,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:20,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:20,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:20,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 19:25:20,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:20,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:20,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:20,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:25:20,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:20,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 19:25:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:20,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:20,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:20,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 19:25:20,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:20,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 19:25:20,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:20,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:20,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 19:25:20,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:20,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:20,548 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 108 proven. 14 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-24 19:25:20,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608054495] [2020-09-24 19:25:20,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:20,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:25:20,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851003878] [2020-09-24 19:25:20,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:20,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:20,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:20,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:20,551 INFO L87 Difference]: Start difference. First operand 3166 states and 3788 transitions. Second operand 8 states. [2020-09-24 19:25:21,248 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-09-24 19:25:23,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:23,983 INFO L93 Difference]: Finished difference Result 7396 states and 8911 transitions. [2020-09-24 19:25:23,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:25:23,984 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 235 [2020-09-24 19:25:23,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:24,004 INFO L225 Difference]: With dead ends: 7396 [2020-09-24 19:25:24,004 INFO L226 Difference]: Without dead ends: 4395 [2020-09-24 19:25:24,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:25:24,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4395 states. [2020-09-24 19:25:24,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4395 to 3757. [2020-09-24 19:25:24,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3757 states. [2020-09-24 19:25:24,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3757 states to 3757 states and 4463 transitions. [2020-09-24 19:25:24,116 INFO L78 Accepts]: Start accepts. Automaton has 3757 states and 4463 transitions. Word has length 235 [2020-09-24 19:25:24,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:24,117 INFO L479 AbstractCegarLoop]: Abstraction has 3757 states and 4463 transitions. [2020-09-24 19:25:24,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:24,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3757 states and 4463 transitions. [2020-09-24 19:25:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-09-24 19:25:24,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:24,132 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:25:24,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:25:24,133 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:24,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:24,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1154348360, now seen corresponding path program 1 times [2020-09-24 19:25:24,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:24,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339273771] [2020-09-24 19:25:24,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:24,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:24,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:24,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:25,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:25,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:25,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-24 19:25:25,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:25:25,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-09-24 19:25:25,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:25,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:25,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-24 19:25:25,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:25:25,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:25,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:25,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:25,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:25,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:25,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:25,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:25:25,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:25,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:25,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:25,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:25,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:25,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:25,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:25,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:25,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:25:25,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 19:25:25,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:25,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:25,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:25:25,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:25,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 19:25:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:25,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:25,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:25,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:25,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:25,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-24 19:25:25,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:25,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:25,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:25:25,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:25,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-24 19:25:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:25,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:25,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:25,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 19:25:25,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:25,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-24 19:25:25,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:25,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 19:25:25,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:25,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 128 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-24 19:25:25,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339273771] [2020-09-24 19:25:25,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:25,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:25:25,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219243432] [2020-09-24 19:25:25,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:25:25,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:25,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:25:25,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:25:25,852 INFO L87 Difference]: Start difference. First operand 3757 states and 4463 transitions. Second operand 9 states. [2020-09-24 19:25:28,581 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-09-24 19:25:30,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:30,197 INFO L93 Difference]: Finished difference Result 8133 states and 9702 transitions. [2020-09-24 19:25:30,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 19:25:30,198 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 251 [2020-09-24 19:25:30,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:30,218 INFO L225 Difference]: With dead ends: 8133 [2020-09-24 19:25:30,218 INFO L226 Difference]: Without dead ends: 4541 [2020-09-24 19:25:30,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-09-24 19:25:30,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2020-09-24 19:25:30,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 3900. [2020-09-24 19:25:30,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3900 states. [2020-09-24 19:25:30,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3900 states to 3900 states and 4623 transitions. [2020-09-24 19:25:30,330 INFO L78 Accepts]: Start accepts. Automaton has 3900 states and 4623 transitions. Word has length 251 [2020-09-24 19:25:30,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:30,331 INFO L479 AbstractCegarLoop]: Abstraction has 3900 states and 4623 transitions. [2020-09-24 19:25:30,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:25:30,331 INFO L276 IsEmpty]: Start isEmpty. Operand 3900 states and 4623 transitions. [2020-09-24 19:25:30,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-24 19:25:30,352 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:30,352 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:25:30,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:25:30,353 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:30,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:30,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1763217340, now seen corresponding path program 1 times [2020-09-24 19:25:30,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:30,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188997825] [2020-09-24 19:25:30,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:30,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:30,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:30,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:31,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-09-24 19:25:31,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:25:31,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-24 19:25:31,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:31,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:25:31,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-09-24 19:25:31,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 19:25:31,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:31,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:31,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:31,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:31,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:31,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:25:31,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:31,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:31,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:31,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:31,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:31,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:25:31,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:31,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:31,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 19:25:31,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:31,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-24 19:25:31,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:31,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:25:31,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:31,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 19:25:31,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:31,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-24 19:25:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:31,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:31,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:25:31,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:31,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 19:25:31,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:31,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:25:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:25:31,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:25:31,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:25:31,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 19:25:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:31,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:31,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:31,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 19:25:31,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:31,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 19:25:31,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:31,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:25:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-24 19:25:31,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:25:31,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:25:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 150 proven. 14 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-24 19:25:32,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188997825] [2020-09-24 19:25:32,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:25:32,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:25:32,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474215359] [2020-09-24 19:25:32,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:25:32,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:32,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:25:32,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:25:32,127 INFO L87 Difference]: Start difference. First operand 3900 states and 4623 transitions. Second operand 8 states. [2020-09-24 19:25:32,446 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-24 19:25:35,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:25:35,699 INFO L93 Difference]: Finished difference Result 9362 states and 11128 transitions. [2020-09-24 19:25:35,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:25:35,700 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 275 [2020-09-24 19:25:35,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:25:35,718 INFO L225 Difference]: With dead ends: 9362 [2020-09-24 19:25:35,718 INFO L226 Difference]: Without dead ends: 4897 [2020-09-24 19:25:35,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:25:35,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4897 states. [2020-09-24 19:25:35,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4897 to 3465. [2020-09-24 19:25:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3465 states. [2020-09-24 19:25:35,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3465 states to 3465 states and 3923 transitions. [2020-09-24 19:25:35,838 INFO L78 Accepts]: Start accepts. Automaton has 3465 states and 3923 transitions. Word has length 275 [2020-09-24 19:25:35,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:25:35,839 INFO L479 AbstractCegarLoop]: Abstraction has 3465 states and 3923 transitions. [2020-09-24 19:25:35,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:25:35,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3465 states and 3923 transitions. [2020-09-24 19:25:35,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-09-24 19:25:35,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:35,854 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:25:35,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:25:35,855 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:35,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:35,855 INFO L82 PathProgramCache]: Analyzing trace with hash -871403522, now seen corresponding path program 1 times [2020-09-24 19:25:35,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:35,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586197572] [2020-09-24 19:25:35,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:36,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:36,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:36,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking...