/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:30:09,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:30:09,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:30:09,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:30:09,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:30:09,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:30:09,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:30:09,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:30:09,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:30:09,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:30:09,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:30:09,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:30:09,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:30:09,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:30:09,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:30:09,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:30:09,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:30:09,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:30:09,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:30:09,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:30:09,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:30:09,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:30:09,406 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:30:09,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:30:09,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:30:09,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:30:09,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:30:09,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:30:09,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:30:09,417 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:30:09,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:30:09,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:30:09,419 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:30:09,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:30:09,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:30:09,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:30:09,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:30:09,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:30:09,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:30:09,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:30:09,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:30:09,427 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 13:30:09,477 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:30:09,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:30:09,480 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:30:09,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:30:09,480 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:30:09,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:30:09,481 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:30:09,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:30:09,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:30:09,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:30:09,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:30:09,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:30:09,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:30:09,483 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:30:09,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:30:09,484 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:30:09,484 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:30:09,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:30:09,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:30:09,485 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:30:09,485 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:30:09,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:30:09,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:30:09,485 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:30:09,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:30:09,486 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:30:09,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:30:09,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:30:09,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:30:09,487 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:30:09,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:30:09,984 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:30:09,991 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:30:09,993 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:30:09,994 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:30:09,995 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-25 13:30:10,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93c217275/7b313252cca54216907bf4d51dc0c6b2/FLAGd84d23393 [2020-09-25 13:30:10,847 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:30:10,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label56.c [2020-09-25 13:30:10,867 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93c217275/7b313252cca54216907bf4d51dc0c6b2/FLAGd84d23393 [2020-09-25 13:30:11,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93c217275/7b313252cca54216907bf4d51dc0c6b2 [2020-09-25 13:30:11,019 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:30:11,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:30:11,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:11,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:30:11,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:30:11,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:11" (1/1) ... [2020-09-25 13:30:11,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@518dc62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:11, skipping insertion in model container [2020-09-25 13:30:11,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:30:11" (1/1) ... [2020-09-25 13:30:11,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:30:11,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:30:11,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:11,650 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:30:11,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:30:11,869 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:30:11,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:11 WrapperNode [2020-09-25 13:30:11,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:30:11,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:30:11,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:30:11,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:30:11,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:11" (1/1) ... [2020-09-25 13:30:11,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:11" (1/1) ... [2020-09-25 13:30:11,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:11" (1/1) ... [2020-09-25 13:30:11,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:11" (1/1) ... [2020-09-25 13:30:11,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:11" (1/1) ... [2020-09-25 13:30:11,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:11" (1/1) ... [2020-09-25 13:30:11,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:11" (1/1) ... [2020-09-25 13:30:11,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:30:11,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:30:11,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:30:11,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:30:11,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:11" (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 13:30:12,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:30:12,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:30:12,096 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:30:12,096 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:30:12,096 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:30:12,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:30:12,097 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:30:12,098 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:30:12,098 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:30:12,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:30:12,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:30:13,786 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:30:13,787 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:30:13,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:13 BoogieIcfgContainer [2020-09-25 13:30:13,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:30:13,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:30:13,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:30:13,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:30:13,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:30:11" (1/3) ... [2020-09-25 13:30:13,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77282cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:13, skipping insertion in model container [2020-09-25 13:30:13,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:30:11" (2/3) ... [2020-09-25 13:30:13,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77282cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:13, skipping insertion in model container [2020-09-25 13:30:13,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:13" (3/3) ... [2020-09-25 13:30:13,807 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label56.c [2020-09-25 13:30:13,820 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:30:13,834 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:30:13,857 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:30:13,893 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:30:13,894 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:30:13,894 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:30:13,894 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:30:13,894 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:30:13,895 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:30:13,895 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:30:13,895 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:30:13,929 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:30:13,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 13:30:13,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:13,950 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] [2020-09-25 13:30:13,951 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:13,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:13,960 INFO L82 PathProgramCache]: Analyzing trace with hash 602782831, now seen corresponding path program 1 times [2020-09-25 13:30:13,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:13,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518252636] [2020-09-25 13:30:13,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:14,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:14,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:15,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:16,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:16,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:17,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:18,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:19,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:19,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-09-25 13:30:19,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:30:19,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 13:30:19,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:19,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:30:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:30:19,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 13:30:19,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:30:19,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:19,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:19,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:19,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:19,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:19,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 13:30:19,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:19,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:19,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:19,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:19,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:30:19,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:19,562 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 13:30:19,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518252636] [2020-09-25 13:30:19,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:30:19,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:30:19,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685985124] [2020-09-25 13:30:19,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:30:19,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:19,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:30:19,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:30:19,595 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 13:30:21,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:21,809 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-25 13:30:21,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:30:21,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 104 [2020-09-25 13:30:21,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:21,850 INFO L225 Difference]: With dead ends: 1235 [2020-09-25 13:30:21,850 INFO L226 Difference]: Without dead ends: 661 [2020-09-25 13:30:21,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:21,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-25 13:30:22,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-25 13:30:22,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-25 13:30:22,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-25 13:30:22,044 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 104 [2020-09-25 13:30:22,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:22,045 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-25 13:30:22,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:30:22,045 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-25 13:30:22,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-25 13:30:22,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:22,054 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:30:22,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:30:22,055 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:22,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:22,055 INFO L82 PathProgramCache]: Analyzing trace with hash -467604084, now seen corresponding path program 1 times [2020-09-25 13:30:22,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:22,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301210626] [2020-09-25 13:30:22,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:22,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:22,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:22,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:22,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:23,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:23,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:25,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:25,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:26,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:27,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:27,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 13:30:27,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:30:27,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 13:30:27,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:27,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 13:30:27,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 13:30:27,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:27,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:27,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:27,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:27,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:27,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:27,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:30:27,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:27,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:27,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:27,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:27,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-09-25 13:30:27,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:27,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:27,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:27,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:30:27,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:27,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:30:27,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:27,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:27,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:27,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 13:30:27,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:27,530 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:27,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301210626] [2020-09-25 13:30:27,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:27,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:30:27,532 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184724466] [2020-09-25 13:30:27,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:30:27,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:27,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:30:27,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:27,536 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 5 states. [2020-09-25 13:30:29,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:29,453 INFO L93 Difference]: Finished difference Result 1524 states and 1875 transitions. [2020-09-25 13:30:29,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:30:29,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-09-25 13:30:29,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:29,466 INFO L225 Difference]: With dead ends: 1524 [2020-09-25 13:30:29,468 INFO L226 Difference]: Without dead ends: 943 [2020-09-25 13:30:29,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:30:29,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2020-09-25 13:30:29,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 891. [2020-09-25 13:30:29,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 13:30:29,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1072 transitions. [2020-09-25 13:30:29,520 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1072 transitions. Word has length 121 [2020-09-25 13:30:29,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:29,521 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1072 transitions. [2020-09-25 13:30:29,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:30:29,521 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1072 transitions. [2020-09-25 13:30:29,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-25 13:30:29,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:29,526 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:30:29,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:30:29,526 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:29,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:29,527 INFO L82 PathProgramCache]: Analyzing trace with hash 2074106237, now seen corresponding path program 1 times [2020-09-25 13:30:29,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:29,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851433351] [2020-09-25 13:30:29,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:29,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:29,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:29,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:29,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:30,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:30,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:30,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:31,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:31,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:32,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:32,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:32,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:33,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:33,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:34,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:34,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 13:30:34,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 13:30:34,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 13:30:34,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:34,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 13:30:34,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-25 13:30:34,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:34,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:34,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:34,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:34,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:34,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:34,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:30:34,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:34,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:34,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:34,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:34,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:34,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:34,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:34,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:34,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:34,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:30:34,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:34,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:30:34,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:34,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:34,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:34,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:34,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:30:34,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:34,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851433351] [2020-09-25 13:30:34,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:34,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:30:34,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959933597] [2020-09-25 13:30:34,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:30:34,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:34,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:30:34,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:34,799 INFO L87 Difference]: Start difference. First operand 891 states and 1072 transitions. Second operand 5 states. [2020-09-25 13:30:37,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:37,133 INFO L93 Difference]: Finished difference Result 2135 states and 2638 transitions. [2020-09-25 13:30:37,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:30:37,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-09-25 13:30:37,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:37,150 INFO L225 Difference]: With dead ends: 2135 [2020-09-25 13:30:37,150 INFO L226 Difference]: Without dead ends: 1268 [2020-09-25 13:30:37,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:30:37,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2020-09-25 13:30:37,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1177. [2020-09-25 13:30:37,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-09-25 13:30:37,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1442 transitions. [2020-09-25 13:30:37,205 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1442 transitions. Word has length 126 [2020-09-25 13:30:37,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:37,210 INFO L479 AbstractCegarLoop]: Abstraction has 1177 states and 1442 transitions. [2020-09-25 13:30:37,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:30:37,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1442 transitions. [2020-09-25 13:30:37,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 13:30:37,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:37,217 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] [2020-09-25 13:30:37,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:30:37,218 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:37,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:37,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1060590272, now seen corresponding path program 1 times [2020-09-25 13:30:37,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:37,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884647045] [2020-09-25 13:30:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:37,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:37,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:37,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:37,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:39,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:39,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:41,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:41,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:42,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:42,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:42,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:42,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 13:30:42,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:30:42,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-09-25 13:30:42,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:42,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 13:30:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 13:30:42,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:42,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:42,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:42,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:42,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:42,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:42,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:30:42,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:42,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:42,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:42,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:42,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:42,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:30:42,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:42,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:42,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:30:42,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:42,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 13:30:42,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:42,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:42,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 13:30:42,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:42,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884647045] [2020-09-25 13:30:42,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:42,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:30:42,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366725228] [2020-09-25 13:30:42,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:30:42,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:42,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:30:42,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:42,560 INFO L87 Difference]: Start difference. First operand 1177 states and 1442 transitions. Second operand 5 states. [2020-09-25 13:30:44,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:44,684 INFO L93 Difference]: Finished difference Result 3074 states and 3906 transitions. [2020-09-25 13:30:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:30:44,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 13:30:44,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:44,706 INFO L225 Difference]: With dead ends: 3074 [2020-09-25 13:30:44,706 INFO L226 Difference]: Without dead ends: 1921 [2020-09-25 13:30:44,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:30:44,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2020-09-25 13:30:44,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1608. [2020-09-25 13:30:44,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1608 states. [2020-09-25 13:30:44,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 1965 transitions. [2020-09-25 13:30:44,778 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 1965 transitions. Word has length 141 [2020-09-25 13:30:44,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:44,779 INFO L479 AbstractCegarLoop]: Abstraction has 1608 states and 1965 transitions. [2020-09-25 13:30:44,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:30:44,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 1965 transitions. [2020-09-25 13:30:44,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 13:30:44,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:44,787 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:30:44,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:30:44,787 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:44,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:44,788 INFO L82 PathProgramCache]: Analyzing trace with hash -620063423, now seen corresponding path program 1 times [2020-09-25 13:30:44,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:44,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1952471299] [2020-09-25 13:30:44,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:44,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:44,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:45,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:45,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:46,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:49,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:49,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:49,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 13:30:49,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:30:49,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-09-25 13:30:49,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:49,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:49,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:49,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 13:30:49,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 13:30:49,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:49,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:49,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:49,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:49,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:49,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:49,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:30:49,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:49,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:49,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:49,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:50,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:50,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:50,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:50,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 13:30:50,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 13:30:50,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:50,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:50,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:50,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:50,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:30:50,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:50,162 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:50,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1952471299] [2020-09-25 13:30:50,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:50,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:30:50,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804312009] [2020-09-25 13:30:50,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:30:50,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:50,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:30:50,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:50,165 INFO L87 Difference]: Start difference. First operand 1608 states and 1965 transitions. Second operand 5 states. [2020-09-25 13:30:52,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:52,022 INFO L93 Difference]: Finished difference Result 4083 states and 5132 transitions. [2020-09-25 13:30:52,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:30:52,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-09-25 13:30:52,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:52,037 INFO L225 Difference]: With dead ends: 4083 [2020-09-25 13:30:52,038 INFO L226 Difference]: Without dead ends: 2351 [2020-09-25 13:30:52,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:30:52,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2351 states. [2020-09-25 13:30:52,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2351 to 2316. [2020-09-25 13:30:52,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2316 states. [2020-09-25 13:30:52,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 2808 transitions. [2020-09-25 13:30:52,171 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 2808 transitions. Word has length 147 [2020-09-25 13:30:52,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:52,171 INFO L479 AbstractCegarLoop]: Abstraction has 2316 states and 2808 transitions. [2020-09-25 13:30:52,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:30:52,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 2808 transitions. [2020-09-25 13:30:52,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 13:30:52,181 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:52,182 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, 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 13:30:52,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:30:52,183 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:52,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:52,183 INFO L82 PathProgramCache]: Analyzing trace with hash -588171755, now seen corresponding path program 1 times [2020-09-25 13:30:52,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:52,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884466134] [2020-09-25 13:30:52,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:52,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:52,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:52,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:54,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:54,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 13:30:54,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:30:54,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1847 [2020-09-25 13:30:54,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:54,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:54,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:54,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 13:30:54,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 13:30:54,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:54,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:54,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:54,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:54,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:54,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:54,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:30:54,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:54,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:54,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:54,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:54,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:54,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:54,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:54,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:54,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:30:54,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:54,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:30:54,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:54,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:30:54,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:54,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:30:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:54,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:54,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:54,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 13:30:54,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:54,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 13:30:54,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:54,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:30:54,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 13:30:54,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:54,392 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:30:54,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884466134] [2020-09-25 13:30:54,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:54,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 13:30:54,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737139318] [2020-09-25 13:30:54,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:30:54,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:54,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:30:54,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:30:54,395 INFO L87 Difference]: Start difference. First operand 2316 states and 2808 transitions. Second operand 7 states. [2020-09-25 13:30:56,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:56,972 INFO L93 Difference]: Finished difference Result 4740 states and 5744 transitions. [2020-09-25 13:30:56,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:30:56,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2020-09-25 13:30:56,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:56,992 INFO L225 Difference]: With dead ends: 4740 [2020-09-25 13:30:56,993 INFO L226 Difference]: Without dead ends: 2448 [2020-09-25 13:30:57,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:30:57,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2020-09-25 13:30:57,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 2401. [2020-09-25 13:30:57,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2401 states. [2020-09-25 13:30:57,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 2797 transitions. [2020-09-25 13:30:57,110 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 2797 transitions. Word has length 181 [2020-09-25 13:30:57,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:57,111 INFO L479 AbstractCegarLoop]: Abstraction has 2401 states and 2797 transitions. [2020-09-25 13:30:57,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:30:57,112 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 2797 transitions. [2020-09-25 13:30:57,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-09-25 13:30:57,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:57,125 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] [2020-09-25 13:30:57,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:30:57,126 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:57,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:57,126 INFO L82 PathProgramCache]: Analyzing trace with hash 895889433, now seen corresponding path program 1 times [2020-09-25 13:30:57,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:57,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837523063] [2020-09-25 13:30:57,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:57,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:57,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:58,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:58,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:58,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking...