/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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/Problem14_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:06:48,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:06:48,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:06:48,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:06:48,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:06:48,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:06:48,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:06:48,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:06:48,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:06:48,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:06:48,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:06:48,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:06:48,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:06:48,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:06:48,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:06:48,458 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:06:48,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:06:48,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:06:48,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:06:48,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:06:48,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:06:48,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:06:48,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:06:48,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:06:48,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:06:48,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:06:48,481 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:06:48,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:06:48,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:06:48,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:06:48,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:06:48,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:06:48,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:06:48,499 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:06:48,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:06:48,504 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:06:48,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:06:48,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:06:48,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:06:48,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:06:48,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:06:48,511 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 09:06:48,555 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:06:48,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:06:48,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:06:48,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:06:48,558 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:06:48,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:06:48,559 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:06:48,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:06:48,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:06:48,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:06:48,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:06:48,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:06:48,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:06:48,562 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:06:48,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:06:48,562 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:06:48,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:06:48,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:06:48,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:06:48,563 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:06:48,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:06:48,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:06:48,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:06:48,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:06:48,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:06:48,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:06:48,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:06:48,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:06:48,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:06:48,565 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:06:49,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:06:49,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:06:49,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:06:49,052 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:06:49,052 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:06:49,054 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-25 09:06:49,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66c35b250/ef29a9eaf42e451281aa2d92b983053c/FLAGf55856fcf [2020-09-25 09:06:49,839 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:06:49,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-25 09:06:49,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66c35b250/ef29a9eaf42e451281aa2d92b983053c/FLAGf55856fcf [2020-09-25 09:06:50,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/66c35b250/ef29a9eaf42e451281aa2d92b983053c [2020-09-25 09:06:50,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:06:50,071 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:06:50,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:50,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:06:50,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:06:50,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:50" (1/1) ... [2020-09-25 09:06:50,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24493d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:50, skipping insertion in model container [2020-09-25 09:06:50,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:06:50" (1/1) ... [2020-09-25 09:06:50,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:06:50,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:06:50,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:50,805 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:06:50,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:06:51,000 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:06:51,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:51 WrapperNode [2020-09-25 09:06:51,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:06:51,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:06:51,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:06:51,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:06:51,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:51" (1/1) ... [2020-09-25 09:06:51,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:51" (1/1) ... [2020-09-25 09:06:51,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:51" (1/1) ... [2020-09-25 09:06:51,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:51" (1/1) ... [2020-09-25 09:06:51,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:51" (1/1) ... [2020-09-25 09:06:51,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:51" (1/1) ... [2020-09-25 09:06:51,118 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:51" (1/1) ... [2020-09-25 09:06:51,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:06:51,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:06:51,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:06:51,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:06:51,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:06:51,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:06:51,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:06:51,227 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:06:51,227 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:06:51,228 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:06:51,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:06:51,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:06:51,230 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:06:51,231 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:06:51,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:06:51,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:06:52,941 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:06:52,941 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:06:52,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:52 BoogieIcfgContainer [2020-09-25 09:06:52,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:06:52,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:06:52,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:06:52,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:06:52,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:06:50" (1/3) ... [2020-09-25 09:06:52,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656878dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:52, skipping insertion in model container [2020-09-25 09:06:52,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:06:51" (2/3) ... [2020-09-25 09:06:52,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656878dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:06:52, skipping insertion in model container [2020-09-25 09:06:52,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:06:52" (3/3) ... [2020-09-25 09:06:52,971 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label21.c [2020-09-25 09:06:52,983 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:06:52,995 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:06:53,019 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:06:53,056 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:06:53,057 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:06:53,057 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:06:53,057 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:06:53,057 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:06:53,057 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:06:53,057 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:06:53,058 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:06:53,095 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 09:06:53,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 09:06:53,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:53,108 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] [2020-09-25 09:06:53,109 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:53,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:53,117 INFO L82 PathProgramCache]: Analyzing trace with hash -2130690894, now seen corresponding path program 1 times [2020-09-25 09:06:53,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:53,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148072446] [2020-09-25 09:06:53,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:53,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:53,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:53,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:53,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:53,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 09:06:53,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:53,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-09-25 09:06:53,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:53,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:06:53,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 09:06:53,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:06:54,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:54,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:54,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:54,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:54,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:54,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:06:54,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:54,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:54,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:54,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:54,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:06:54,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:06:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:54,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148072446] [2020-09-25 09:06:54,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:54,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:06:54,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916563954] [2020-09-25 09:06:54,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:06:54,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:54,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:06:54,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:06:54,180 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 4 states. [2020-09-25 09:06:57,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:57,088 INFO L93 Difference]: Finished difference Result 1656 states and 2196 transitions. [2020-09-25 09:06:57,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:06:57,090 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-25 09:06:57,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:57,119 INFO L225 Difference]: With dead ends: 1656 [2020-09-25 09:06:57,119 INFO L226 Difference]: Without dead ends: 920 [2020-09-25 09:06:57,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:06:57,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-09-25 09:06:57,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 806. [2020-09-25 09:06:57,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-09-25 09:06:57,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 969 transitions. [2020-09-25 09:06:57,248 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 969 transitions. Word has length 53 [2020-09-25 09:06:57,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:57,249 INFO L479 AbstractCegarLoop]: Abstraction has 806 states and 969 transitions. [2020-09-25 09:06:57,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:06:57,249 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 969 transitions. [2020-09-25 09:06:57,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-25 09:06:57,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:57,258 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:06:57,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:06:57,258 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:57,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:57,259 INFO L82 PathProgramCache]: Analyzing trace with hash -2128467461, now seen corresponding path program 1 times [2020-09-25 09:06:57,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:57,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602946418] [2020-09-25 09:06:57,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:57,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:57,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:57,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:57,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:58,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:59,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 09:06:59,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:06:59,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2206 [2020-09-25 09:06:59,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:59,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:59,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:06:59,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 09:06:59,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-25 09:06:59,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:59,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:59,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:59,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:59,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:59,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 09:06:59,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:59,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:59,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:06:59,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:59,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 09:06:59,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:59,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:59,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:59,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:59,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 09:06:59,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:59,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 09:06:59,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:59,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:59,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:06:59,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:06:59,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 09:06:59,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:59,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602946418] [2020-09-25 09:06:59,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:06:59,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:06:59,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672592929] [2020-09-25 09:06:59,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:06:59,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:59,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:06:59,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:06:59,875 INFO L87 Difference]: Start difference. First operand 806 states and 969 transitions. Second operand 7 states. [2020-09-25 09:07:03,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:03,178 INFO L93 Difference]: Finished difference Result 2009 states and 2514 transitions. [2020-09-25 09:07:03,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 09:07:03,178 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-09-25 09:07:03,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:03,186 INFO L225 Difference]: With dead ends: 2009 [2020-09-25 09:07:03,186 INFO L226 Difference]: Without dead ends: 1218 [2020-09-25 09:07:03,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:07:03,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2020-09-25 09:07:03,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1190. [2020-09-25 09:07:03,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2020-09-25 09:07:03,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1444 transitions. [2020-09-25 09:07:03,232 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1444 transitions. Word has length 132 [2020-09-25 09:07:03,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:03,233 INFO L479 AbstractCegarLoop]: Abstraction has 1190 states and 1444 transitions. [2020-09-25 09:07:03,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:07:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1444 transitions. [2020-09-25 09:07:03,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 09:07:03,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:03,239 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:07:03,239 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:07:03,239 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:03,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:03,240 INFO L82 PathProgramCache]: Analyzing trace with hash 708146983, now seen corresponding path program 1 times [2020-09-25 09:07:03,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:03,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1978832809] [2020-09-25 09:07:03,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:03,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:03,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:03,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:04,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:04,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:05,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:05,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 09:07:05,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:07:05,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2159 [2020-09-25 09:07:05,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:05,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:07:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:07:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 09:07:05,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:05,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:05,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:05,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:05,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:05,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:05,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:05,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:07:05,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:05,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:05,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:05,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:05,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 09:07:05,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:05,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:05,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:05,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:05,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 09:07:05,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:05,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 09:07:05,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:05,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:07:05,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:05,859 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:07:05,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1978832809] [2020-09-25 09:07:05,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:07:05,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:07:05,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287262587] [2020-09-25 09:07:05,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:07:05,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:05,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:07:05,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:07:05,865 INFO L87 Difference]: Start difference. First operand 1190 states and 1444 transitions. Second operand 7 states. [2020-09-25 09:07:08,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:08,260 INFO L93 Difference]: Finished difference Result 3026 states and 3766 transitions. [2020-09-25 09:07:08,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:07:08,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-09-25 09:07:08,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:08,271 INFO L225 Difference]: With dead ends: 3026 [2020-09-25 09:07:08,272 INFO L226 Difference]: Without dead ends: 1851 [2020-09-25 09:07:08,276 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:07:08,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2020-09-25 09:07:08,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1818. [2020-09-25 09:07:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1818 states. [2020-09-25 09:07:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2150 transitions. [2020-09-25 09:07:08,329 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2150 transitions. Word has length 135 [2020-09-25 09:07:08,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:08,329 INFO L479 AbstractCegarLoop]: Abstraction has 1818 states and 2150 transitions. [2020-09-25 09:07:08,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:07:08,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2150 transitions. [2020-09-25 09:07:08,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 09:07:08,332 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:08,333 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:07:08,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:07:08,333 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:08,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:08,334 INFO L82 PathProgramCache]: Analyzing trace with hash 5118375, now seen corresponding path program 1 times [2020-09-25 09:07:08,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:08,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567963667] [2020-09-25 09:07:08,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:08,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:08,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:08,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:08,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:10,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:10,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 09:07:10,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:07:10,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1651 [2020-09-25 09:07:10,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:10,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:10,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:10,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-09-25 09:07:10,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 09:07:10,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:10,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:10,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:10,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:10,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:10,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:10,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 09:07:10,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:10,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:07:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:10,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:07:10,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:10,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:10,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:10,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:10,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 09:07:10,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:10,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 09:07:10,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:10,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:10,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 09:07:10,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:10,254 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:07:10,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567963667] [2020-09-25 09:07:10,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:10,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:07:10,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517500611] [2020-09-25 09:07:10,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:07:10,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:10,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:07:10,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:07:10,260 INFO L87 Difference]: Start difference. First operand 1818 states and 2150 transitions. Second operand 5 states. [2020-09-25 09:07:13,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:13,072 INFO L93 Difference]: Finished difference Result 3819 states and 4662 transitions. [2020-09-25 09:07:13,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:07:13,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-25 09:07:13,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:13,091 INFO L225 Difference]: With dead ends: 3819 [2020-09-25 09:07:13,091 INFO L226 Difference]: Without dead ends: 2010 [2020-09-25 09:07:13,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:07:13,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2020-09-25 09:07:13,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1803. [2020-09-25 09:07:13,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1803 states. [2020-09-25 09:07:13,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1803 states to 1803 states and 2102 transitions. [2020-09-25 09:07:13,161 INFO L78 Accepts]: Start accepts. Automaton has 1803 states and 2102 transitions. Word has length 146 [2020-09-25 09:07:13,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:13,162 INFO L479 AbstractCegarLoop]: Abstraction has 1803 states and 2102 transitions. [2020-09-25 09:07:13,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:07:13,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1803 states and 2102 transitions. [2020-09-25 09:07:13,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-09-25 09:07:13,169 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:13,170 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:07:13,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:07:13,170 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:13,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:13,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1952968784, now seen corresponding path program 1 times [2020-09-25 09:07:13,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:13,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938773424] [2020-09-25 09:07:13,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:13,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:13,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:13,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:13,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:13,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:15,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:15,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:15,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:16,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:18,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:18,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-09-25 09:07:18,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:07:18,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 09:07:18,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:18,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-09-25 09:07:18,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 09:07:18,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:18,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:18,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:18,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:18,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:18,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:18,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:07:18,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:18,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:07:18,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:18,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:07:18,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:18,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:18,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:18,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:18,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:18,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 09:07:18,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:18,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 09:07:18,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:18,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:18,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:18,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:18,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 09:07:18,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:18,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-09-25 09:07:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:18,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:18,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:18,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 09:07:18,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:18,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-25 09:07:18,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:18,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:18,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:18,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:18,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 09:07:18,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:19,255 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 09:07:19,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938773424] [2020-09-25 09:07:19,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:19,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:07:19,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165745957] [2020-09-25 09:07:19,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:07:19,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:19,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:07:19,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:07:19,259 INFO L87 Difference]: Start difference. First operand 1803 states and 2102 transitions. Second operand 8 states. [2020-09-25 09:07:23,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:23,606 INFO L93 Difference]: Finished difference Result 3832 states and 4638 transitions. [2020-09-25 09:07:23,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:07:23,608 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 240 [2020-09-25 09:07:23,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:23,619 INFO L225 Difference]: With dead ends: 3832 [2020-09-25 09:07:23,619 INFO L226 Difference]: Without dead ends: 2134 [2020-09-25 09:07:23,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:07:23,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2020-09-25 09:07:23,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 2114. [2020-09-25 09:07:23,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2020-09-25 09:07:23,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 2370 transitions. [2020-09-25 09:07:23,731 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 2370 transitions. Word has length 240 [2020-09-25 09:07:23,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:23,731 INFO L479 AbstractCegarLoop]: Abstraction has 2114 states and 2370 transitions. [2020-09-25 09:07:23,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:07:23,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 2370 transitions. [2020-09-25 09:07:23,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2020-09-25 09:07:23,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:23,743 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2020-09-25 09:07:23,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:07:23,743 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:23,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:23,744 INFO L82 PathProgramCache]: Analyzing trace with hash 128209212, now seen corresponding path program 1 times [2020-09-25 09:07:23,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:23,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147856587] [2020-09-25 09:07:23,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:23,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:24,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:24,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:25,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:25,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:26,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:28,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:28,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-09-25 09:07:28,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:07:28,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 09:07:28,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:28,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:28,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:28,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 254 [2020-09-25 09:07:28,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 09:07:28,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:28,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:07:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:28,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:28,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:28,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:07:28,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:28,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:07:28,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:28,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:28,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:07:28,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:28,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:07:28,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:28,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:07:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:29,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:29,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:29,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 09:07:29,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:29,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 09:07:29,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:29,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:29,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:07:29,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:29,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:07:29,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:29,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 09:07:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:29,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:29,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:29,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 09:07:29,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:29,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 09:07:29,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:29,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:29,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:07:29,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:07:29,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 09:07:29,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:07:29,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-09-25 09:07:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:29,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:29,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:29,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 09:07:29,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:29,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 09:07:29,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:29,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:29,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:07:29,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:07:29,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 09:07:29,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:07:29,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-09-25 09:07:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:29,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:29,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:07:29,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 09:07:29,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:07:29,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 09:07:29,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:07:29,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:07:29,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:07:29,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 09:07:29,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:07:29,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:07:29,756 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 325 proven. 71 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2020-09-25 09:07:29,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147856587] [2020-09-25 09:07:29,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:07:29,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 09:07:29,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042238022] [2020-09-25 09:07:29,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:07:29,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:07:29,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:07:29,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:07:29,760 INFO L87 Difference]: Start difference. First operand 2114 states and 2370 transitions. Second operand 7 states. [2020-09-25 09:07:32,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:07:32,728 INFO L93 Difference]: Finished difference Result 4561 states and 5270 transitions. [2020-09-25 09:07:32,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 09:07:32,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 465 [2020-09-25 09:07:32,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:07:32,746 INFO L225 Difference]: With dead ends: 4561 [2020-09-25 09:07:32,747 INFO L226 Difference]: Without dead ends: 2844 [2020-09-25 09:07:32,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:07:32,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2844 states. [2020-09-25 09:07:32,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2844 to 2809. [2020-09-25 09:07:32,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2809 states. [2020-09-25 09:07:32,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 3168 transitions. [2020-09-25 09:07:32,820 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 3168 transitions. Word has length 465 [2020-09-25 09:07:32,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:07:32,822 INFO L479 AbstractCegarLoop]: Abstraction has 2809 states and 3168 transitions. [2020-09-25 09:07:32,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:07:32,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 3168 transitions. [2020-09-25 09:07:32,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2020-09-25 09:07:32,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:07:32,834 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2020-09-25 09:07:32,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:07:32,834 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:07:32,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:07:32,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1717235504, now seen corresponding path program 1 times [2020-09-25 09:07:32,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:07:32,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986082613] [2020-09-25 09:07:32,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:07:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:07:33,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:33,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:33,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:33,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:34,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:07:35,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking...