/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=0.5 --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/Problem10_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:41:35,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:41:35,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:41:36,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:41:36,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:41:36,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:41:36,044 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:41:36,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:41:36,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:41:36,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:41:36,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:41:36,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:41:36,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:41:36,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:41:36,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:41:36,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:41:36,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:41:36,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:41:36,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:41:36,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:41:36,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:41:36,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:41:36,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:41:36,072 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:41:36,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:41:36,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:41:36,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:41:36,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:41:36,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:41:36,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:41:36,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:41:36,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:41:36,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:41:36,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:41:36,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:41:36,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:41:36,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:41:36,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:41:36,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:41:36,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:41:36,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:41:36,085 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 14:41:36,110 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:41:36,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:41:36,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:41:36,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:41:36,112 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:41:36,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:41:36,113 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:41:36,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:41:36,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:41:36,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:41:36,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:41:36,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:41:36,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:41:36,114 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:41:36,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:41:36,115 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:41:36,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:41:36,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:41:36,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:41:36,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:41:36,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:41:36,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:41:36,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:41:36,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:41:36,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:41:36,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:41:36,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:41:36,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:41:36,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:41:36,118 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:41:36,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:41:36,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:41:36,615 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:41:36,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:41:36,617 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:41:36,618 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-25 14:41:36,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/120f62f62/fcf538655f05406aa9679af94aeb5a07/FLAGef6b1b685 [2020-09-25 14:41:37,293 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:41:37,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label10.c [2020-09-25 14:41:37,306 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/120f62f62/fcf538655f05406aa9679af94aeb5a07/FLAGef6b1b685 [2020-09-25 14:41:37,536 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/120f62f62/fcf538655f05406aa9679af94aeb5a07 [2020-09-25 14:41:37,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:41:37,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:41:37,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:37,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:41:37,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:41:37,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:37" (1/1) ... [2020-09-25 14:41:37,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@180772d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:37, skipping insertion in model container [2020-09-25 14:41:37,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:41:37" (1/1) ... [2020-09-25 14:41:37,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:41:37,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:41:38,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:38,128 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:41:38,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:41:38,379 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:41:38,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:38 WrapperNode [2020-09-25 14:41:38,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:41:38,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:41:38,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:41:38,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:41:38,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:38" (1/1) ... [2020-09-25 14:41:38,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:38" (1/1) ... [2020-09-25 14:41:38,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:38" (1/1) ... [2020-09-25 14:41:38,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:38" (1/1) ... [2020-09-25 14:41:38,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:38" (1/1) ... [2020-09-25 14:41:38,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:38" (1/1) ... [2020-09-25 14:41:38,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:38" (1/1) ... [2020-09-25 14:41:38,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:41:38,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:41:38,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:41:38,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:41:38,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:38" (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 14:41:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:41:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:41:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:41:38,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:41:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:41:38,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:41:38,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:41:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:41:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:41:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:41:38,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:41:40,037 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:41:40,038 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:41:40,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:40 BoogieIcfgContainer [2020-09-25 14:41:40,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:41:40,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:41:40,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:41:40,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:41:40,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:41:37" (1/3) ... [2020-09-25 14:41:40,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50892463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:40, skipping insertion in model container [2020-09-25 14:41:40,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:41:38" (2/3) ... [2020-09-25 14:41:40,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50892463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:41:40, skipping insertion in model container [2020-09-25 14:41:40,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:41:40" (3/3) ... [2020-09-25 14:41:40,056 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label10.c [2020-09-25 14:41:40,068 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:41:40,079 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:41:40,102 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:41:40,136 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:41:40,136 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:41:40,136 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:41:40,136 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:41:40,137 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:41:40,137 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:41:40,137 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:41:40,137 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:41:40,166 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 14:41:40,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 14:41:40,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:40,179 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] [2020-09-25 14:41:40,179 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:40,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:40,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1834886135, now seen corresponding path program 1 times [2020-09-25 14:41:40,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:40,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600401424] [2020-09-25 14:41:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:40,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:40,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:40,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:40,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:41,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:41,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:41:41,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:41:41,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-09-25 14:41:41,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:41,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:41,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:41:41,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 14:41:41,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 14:41:41,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:41:41,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:41,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:41,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:41,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:41,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:41,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 14:41:41,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:41,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:41:41,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:41,356 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 14:41:41,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600401424] [2020-09-25 14:41:41,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:41:41,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:41:41,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619834622] [2020-09-25 14:41:41,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:41:41,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:41,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:41:41,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:41:41,388 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 14:41:43,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:43,341 INFO L93 Difference]: Finished difference Result 1089 states and 1514 transitions. [2020-09-25 14:41:43,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:41:43,343 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-09-25 14:41:43,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:43,366 INFO L225 Difference]: With dead ends: 1089 [2020-09-25 14:41:43,366 INFO L226 Difference]: Without dead ends: 575 [2020-09-25 14:41:43,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 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 14:41:43,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2020-09-25 14:41:43,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 545. [2020-09-25 14:41:43,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 545 states. [2020-09-25 14:41:43,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 642 transitions. [2020-09-25 14:41:43,473 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 642 transitions. Word has length 67 [2020-09-25 14:41:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:43,474 INFO L479 AbstractCegarLoop]: Abstraction has 545 states and 642 transitions. [2020-09-25 14:41:43,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:41:43,475 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 642 transitions. [2020-09-25 14:41:43,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 14:41:43,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:43,482 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:43,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:41:43,483 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:43,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:43,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1798381656, now seen corresponding path program 1 times [2020-09-25 14:41:43,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:43,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196935810] [2020-09-25 14:41:43,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:43,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:43,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:43,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:43,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:44,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:44,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:48,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:48,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 14:41:48,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:41:48,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 14:41:48,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:48,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:48,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:41:48,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 14:41:48,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 14:41:48,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:41:48,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:48,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:48,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:48,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:48,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:48,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 14:41:48,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:48,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:48,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:48,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:41:48,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:41:48,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:48,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:48,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:49,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:49,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:41:49,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:41:49,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 14:41:49,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:49,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:41:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 14:41:49,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:41:49,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196935810] [2020-09-25 14:41:49,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:49,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:41:49,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993160998] [2020-09-25 14:41:49,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:41:49,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:49,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:41:49,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:41:49,122 INFO L87 Difference]: Start difference. First operand 545 states and 642 transitions. Second operand 5 states. [2020-09-25 14:41:50,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:50,850 INFO L93 Difference]: Finished difference Result 1389 states and 1702 transitions. [2020-09-25 14:41:50,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:41:50,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-09-25 14:41:50,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:50,858 INFO L225 Difference]: With dead ends: 1389 [2020-09-25 14:41:50,858 INFO L226 Difference]: Without dead ends: 859 [2020-09-25 14:41:50,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 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 14:41:50,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2020-09-25 14:41:50,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 849. [2020-09-25 14:41:50,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 849 states. [2020-09-25 14:41:50,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1017 transitions. [2020-09-25 14:41:50,901 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1017 transitions. Word has length 146 [2020-09-25 14:41:50,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:50,902 INFO L479 AbstractCegarLoop]: Abstraction has 849 states and 1017 transitions. [2020-09-25 14:41:50,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:41:50,902 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1017 transitions. [2020-09-25 14:41:50,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 14:41:50,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:50,906 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:50,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:41:50,906 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:50,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:50,906 INFO L82 PathProgramCache]: Analyzing trace with hash 196926794, now seen corresponding path program 1 times [2020-09-25 14:41:50,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:50,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363739713] [2020-09-25 14:41:50,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:50,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:51,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:51,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:51,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:51,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:54,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:54,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 14:41:54,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:41:54,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3496 [2020-09-25 14:41:54,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:54,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:54,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:41:54,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 14:41:54,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 14:41:54,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:54,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:41:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:54,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:54,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:54,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:41:54,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:54,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:41:54,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:54,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:54,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:41:54,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:41:54,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:41:54,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:54,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:41:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:54,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:54,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:41:54,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:41:54,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:41:54,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-09-25 14:41:54,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:41:54,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:41:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:41:54,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:41:54,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 14:41:54,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:41:54,933 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 34 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:41:54,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363739713] [2020-09-25 14:41:54,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:41:54,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 14:41:54,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987105663] [2020-09-25 14:41:54,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 14:41:54,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:41:54,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 14:41:54,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:41:54,939 INFO L87 Difference]: Start difference. First operand 849 states and 1017 transitions. Second operand 12 states. [2020-09-25 14:41:58,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:41:58,608 INFO L93 Difference]: Finished difference Result 3115 states and 3932 transitions. [2020-09-25 14:41:58,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 14:41:58,609 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 156 [2020-09-25 14:41:58,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:41:58,633 INFO L225 Difference]: With dead ends: 3115 [2020-09-25 14:41:58,633 INFO L226 Difference]: Without dead ends: 2238 [2020-09-25 14:41:58,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2020-09-25 14:41:58,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2020-09-25 14:41:58,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 1707. [2020-09-25 14:41:58,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1707 states. [2020-09-25 14:41:58,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2136 transitions. [2020-09-25 14:41:58,735 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2136 transitions. Word has length 156 [2020-09-25 14:41:58,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:41:58,740 INFO L479 AbstractCegarLoop]: Abstraction has 1707 states and 2136 transitions. [2020-09-25 14:41:58,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 14:41:58,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2136 transitions. [2020-09-25 14:41:58,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 14:41:58,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:41:58,748 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, 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, 1, 1, 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 14:41:58,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:41:58,749 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:41:58,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:41:58,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1077403518, now seen corresponding path program 1 times [2020-09-25 14:41:58,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:41:58,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566722959] [2020-09-25 14:41:58,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:41:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:41:58,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:58,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:59,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:59,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:41:59,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:00,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:01,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:03,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:03,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-25 14:42:03,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:42:03,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4224 [2020-09-25 14:42:03,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:03,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:03,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:42:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 14:42:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 14:42:03,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:03,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:03,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:03,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:03,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:03,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:03,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:42:03,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:03,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:03,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:03,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:03,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:03,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:03,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:03,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:03,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 14:42:03,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:03,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 14:42:03,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:03,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:03,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:42:03,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:03,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 14:42:03,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:03,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 14:42:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:03,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:03,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:03,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:03,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 14:42:03,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 14:42:03,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:03,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:03,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:42:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 14:42:03,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 120 proven. 47 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 14:42:03,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566722959] [2020-09-25 14:42:03,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:03,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:42:03,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603129497] [2020-09-25 14:42:03,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:42:03,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:03,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:42:03,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:42:03,721 INFO L87 Difference]: Start difference. First operand 1707 states and 2136 transitions. Second operand 8 states. [2020-09-25 14:42:07,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:07,117 INFO L93 Difference]: Finished difference Result 5180 states and 6825 transitions. [2020-09-25 14:42:07,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:42:07,123 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2020-09-25 14:42:07,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:07,144 INFO L225 Difference]: With dead ends: 5180 [2020-09-25 14:42:07,144 INFO L226 Difference]: Without dead ends: 3488 [2020-09-25 14:42:07,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:42:07,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2020-09-25 14:42:07,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 3100. [2020-09-25 14:42:07,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3100 states. [2020-09-25 14:42:07,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 3970 transitions. [2020-09-25 14:42:07,260 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 3970 transitions. Word has length 226 [2020-09-25 14:42:07,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:07,261 INFO L479 AbstractCegarLoop]: Abstraction has 3100 states and 3970 transitions. [2020-09-25 14:42:07,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:42:07,261 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 3970 transitions. [2020-09-25 14:42:07,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-09-25 14:42:07,267 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:07,268 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, 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, 1, 1, 1, 1, 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 14:42:07,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:42:07,268 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:07,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:07,269 INFO L82 PathProgramCache]: Analyzing trace with hash 735069318, now seen corresponding path program 1 times [2020-09-25 14:42:07,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:07,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856801765] [2020-09-25 14:42:07,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:07,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:07,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:07,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:07,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:08,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:12,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:12,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-09-25 14:42:12,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:42:12,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 14:42:12,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:12,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:12,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:42:12,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 14:42:12,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 14:42:12,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:12,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:12,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:12,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:12,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:12,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:12,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:42:12,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:12,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:12,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:12,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:12,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:12,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:12,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:12,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:12,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:12,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 14:42:12,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:12,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-09-25 14:42:12,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:12,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:12,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:42:12,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:12,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 14:42:12,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:12,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 14:42:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:12,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:13,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:13,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:13,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:42:13,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:42:13,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 324 [2020-09-25 14:42:13,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:13,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:13,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:42:13,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:13,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 14:42:13,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 14:42:13,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856801765] [2020-09-25 14:42:13,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:42:13,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:42:13,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611395921] [2020-09-25 14:42:13,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:42:13,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:42:13,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:42:13,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:42:13,491 INFO L87 Difference]: Start difference. First operand 3100 states and 3970 transitions. Second operand 10 states. [2020-09-25 14:42:19,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:42:19,069 INFO L93 Difference]: Finished difference Result 8793 states and 11657 transitions. [2020-09-25 14:42:19,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:42:19,070 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 242 [2020-09-25 14:42:19,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:42:19,103 INFO L225 Difference]: With dead ends: 8793 [2020-09-25 14:42:19,104 INFO L226 Difference]: Without dead ends: 5824 [2020-09-25 14:42:19,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:42:19,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5824 states. [2020-09-25 14:42:19,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5824 to 5401. [2020-09-25 14:42:19,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5401 states. [2020-09-25 14:42:19,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5401 states to 5401 states and 6845 transitions. [2020-09-25 14:42:19,343 INFO L78 Accepts]: Start accepts. Automaton has 5401 states and 6845 transitions. Word has length 242 [2020-09-25 14:42:19,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:42:19,343 INFO L479 AbstractCegarLoop]: Abstraction has 5401 states and 6845 transitions. [2020-09-25 14:42:19,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:42:19,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5401 states and 6845 transitions. [2020-09-25 14:42:19,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-09-25 14:42:19,356 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:42:19,356 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:19,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:42:19,357 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:42:19,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:42:19,357 INFO L82 PathProgramCache]: Analyzing trace with hash -283548581, now seen corresponding path program 1 times [2020-09-25 14:42:19,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:42:19,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023044167] [2020-09-25 14:42:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:42:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:19,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:19,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:19,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:20,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:24,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:24,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 318 [2020-09-25 14:42:24,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:42:24,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 14:42:24,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:24,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:24,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:42:24,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 14:42:24,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 14:42:24,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:24,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:42:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:24,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:24,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:24,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:42:24,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:24,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:42:24,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:24,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:42:24,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:24,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:42:24,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:42:24,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 14:42:24,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:24,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:42:24,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:42:24,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 14:42:24,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:42:24,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 14:42:24,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:42:24,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:42:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:42:24,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:42:24,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 14:42:24,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:42:24,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-25 14:42:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:42:24,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking...