/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=0.1 --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_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:06:11,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:06:11,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:06:11,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:06:11,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:06:11,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:06:11,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:06:11,355 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:06:11,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:06:11,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:06:11,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:06:11,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:06:11,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:06:11,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:06:11,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:06:11,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:06:11,366 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:06:11,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:06:11,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:06:11,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:06:11,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:06:11,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:06:11,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:06:11,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:06:11,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:06:11,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:06:11,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:06:11,381 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:06:11,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:06:11,383 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:06:11,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:06:11,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:06:11,385 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:06:11,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:06:11,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:06:11,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:06:11,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:06:11,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:06:11,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:06:11,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:06:11,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:06:11,392 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 10:06:11,419 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:06:11,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:06:11,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:06:11,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:06:11,421 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:06:11,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:06:11,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:06:11,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:06:11,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:06:11,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:06:11,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:06:11,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:06:11,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:06:11,423 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:06:11,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:06:11,424 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:06:11,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:06:11,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:06:11,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:06:11,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:06:11,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:06:11,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:06:11,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:06:11,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:06:11,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:06:11,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:06:11,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:06:11,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:06:11,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:06:11,426 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:06:11,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:06:11,942 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:06:11,950 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:06:11,952 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:06:11,953 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:06:11,954 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-09-25 10:06:12,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26c4f3330/5c0f34fdbd734534a1239500c7d13397/FLAGfc6cf1979 [2020-09-25 10:06:12,698 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:06:12,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label10.c [2020-09-25 10:06:12,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26c4f3330/5c0f34fdbd734534a1239500c7d13397/FLAGfc6cf1979 [2020-09-25 10:06:12,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26c4f3330/5c0f34fdbd734534a1239500c7d13397 [2020-09-25 10:06:12,947 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:06:12,954 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:06:12,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:12,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:06:12,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:06:12,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:12" (1/1) ... [2020-09-25 10:06:12,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112bbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:12, skipping insertion in model container [2020-09-25 10:06:12,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:12" (1/1) ... [2020-09-25 10:06:12,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:06:13,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:06:13,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:13,554 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:06:13,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:13,796 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:06:13,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:13 WrapperNode [2020-09-25 10:06:13,797 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:13,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:06:13,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:06:13,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:06:13,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:13" (1/1) ... [2020-09-25 10:06:13,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:13" (1/1) ... [2020-09-25 10:06:13,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:13" (1/1) ... [2020-09-25 10:06:13,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:13" (1/1) ... [2020-09-25 10:06:13,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:13" (1/1) ... [2020-09-25 10:06:13,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:13" (1/1) ... [2020-09-25 10:06:13,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:13" (1/1) ... [2020-09-25 10:06:13,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:06:13,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:06:13,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:06:13,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:06:13,923 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:13" (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 10:06:13,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:06:13,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:06:14,000 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:06:14,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:06:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:06:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:06:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:06:14,000 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:06:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:06:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:06:14,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:06:15,436 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:06:15,436 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:06:15,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:15 BoogieIcfgContainer [2020-09-25 10:06:15,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:06:15,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:06:15,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:06:15,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:06:15,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:06:12" (1/3) ... [2020-09-25 10:06:15,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad18132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:15, skipping insertion in model container [2020-09-25 10:06:15,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:13" (2/3) ... [2020-09-25 10:06:15,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad18132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:15, skipping insertion in model container [2020-09-25 10:06:15,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:15" (3/3) ... [2020-09-25 10:06:15,456 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label10.c [2020-09-25 10:06:15,468 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:06:15,480 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:06:15,507 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:06:15,548 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:06:15,548 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:06:15,548 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:06:15,548 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:06:15,549 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:06:15,549 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:06:15,549 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:06:15,549 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:06:15,586 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:06:15,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 10:06:15,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:15,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:15,612 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:15,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:15,622 INFO L82 PathProgramCache]: Analyzing trace with hash 346455735, now seen corresponding path program 1 times [2020-09-25 10:06:15,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:15,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002017105] [2020-09-25 10:06:15,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:16,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:16,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:19,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:20,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:20,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 10:06:20,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:06:20,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 10:06:20,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:20,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 10:06:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 10:06:20,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:06:21,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:21,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:21,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:21,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:21,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:21,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:06:21,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:21,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:21,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:21,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:21,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:06:21,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:21,276 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 10:06:21,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002017105] [2020-09-25 10:06:21,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:06:21,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:06:21,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488450454] [2020-09-25 10:06:21,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:06:21,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:21,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:06:21,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:06:21,311 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 10:06:23,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:23,437 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 10:06:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:06:23,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 138 [2020-09-25 10:06:23,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:23,480 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 10:06:23,480 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 10:06:23,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:06:23,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 10:06:23,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 10:06:23,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 10:06:23,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 10:06:23,599 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 138 [2020-09-25 10:06:23,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:23,600 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 10:06:23,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:06:23,600 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 10:06:23,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-25 10:06:23,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:23,610 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:23,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:06:23,610 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:23,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:23,611 INFO L82 PathProgramCache]: Analyzing trace with hash 216020424, now seen corresponding path program 1 times [2020-09-25 10:06:23,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:23,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075466143] [2020-09-25 10:06:23,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:23,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:24,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:24,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:24,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:24,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:26,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:26,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:27,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:28,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-09-25 10:06:28,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:06:28,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 10:06:28,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:28,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:06:28,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:06:28,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 10:06:28,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 10:06:28,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:28,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:28,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:28,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:28,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:06:28,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:28,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:28,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:06:28,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:28,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:28,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:28,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:28,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:28,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 10:06:28,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:28,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:28,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:28,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:28,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:06:28,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:29,109 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:06:29,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075466143] [2020-09-25 10:06:29,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:29,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:06:29,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619685721] [2020-09-25 10:06:29,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:06:29,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:29,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:06:29,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:06:29,118 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 6 states. [2020-09-25 10:06:31,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:31,085 INFO L93 Difference]: Finished difference Result 1617 states and 2008 transitions. [2020-09-25 10:06:31,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:06:31,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 159 [2020-09-25 10:06:31,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:31,100 INFO L225 Difference]: With dead ends: 1617 [2020-09-25 10:06:31,101 INFO L226 Difference]: Without dead ends: 1038 [2020-09-25 10:06:31,104 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:06:31,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-09-25 10:06:31,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 957. [2020-09-25 10:06:31,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 957 states. [2020-09-25 10:06:31,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1165 transitions. [2020-09-25 10:06:31,177 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1165 transitions. Word has length 159 [2020-09-25 10:06:31,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:31,178 INFO L479 AbstractCegarLoop]: Abstraction has 957 states and 1165 transitions. [2020-09-25 10:06:31,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:06:31,178 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1165 transitions. [2020-09-25 10:06:31,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 10:06:31,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:31,185 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:31,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:06:31,186 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:31,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:31,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1520709248, now seen corresponding path program 1 times [2020-09-25 10:06:31,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:31,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088750853] [2020-09-25 10:06:31,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:31,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:32,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:32,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:34,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:34,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:34,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:36,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:36,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-09-25 10:06:36,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 10:06:36,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:06:36,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:36,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:36,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 10:06:36,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 10:06:36,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:36,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:36,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:36,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:36,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:36,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:36,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:06:36,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:36,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:36,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:36,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:36,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:36,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:36,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:36,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:36,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:36,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 10:06:36,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 10:06:36,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:36,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:06:36,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:06:36,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088750853] [2020-09-25 10:06:36,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:36,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:06:36,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938869775] [2020-09-25 10:06:36,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:06:36,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:36,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:06:36,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:06:36,535 INFO L87 Difference]: Start difference. First operand 957 states and 1165 transitions. Second operand 5 states. [2020-09-25 10:06:38,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:38,704 INFO L93 Difference]: Finished difference Result 2226 states and 2796 transitions. [2020-09-25 10:06:38,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:06:38,705 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 10:06:38,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:38,713 INFO L225 Difference]: With dead ends: 2226 [2020-09-25 10:06:38,713 INFO L226 Difference]: Without dead ends: 1293 [2020-09-25 10:06:38,717 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 10:06:38,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2020-09-25 10:06:38,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1245. [2020-09-25 10:06:38,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1245 states. [2020-09-25 10:06:38,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1548 transitions. [2020-09-25 10:06:38,765 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1548 transitions. Word has length 168 [2020-09-25 10:06:38,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:38,765 INFO L479 AbstractCegarLoop]: Abstraction has 1245 states and 1548 transitions. [2020-09-25 10:06:38,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:06:38,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1548 transitions. [2020-09-25 10:06:38,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-09-25 10:06:38,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:38,773 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:06:38,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:06:38,773 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:38,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:38,774 INFO L82 PathProgramCache]: Analyzing trace with hash 107114240, now seen corresponding path program 1 times [2020-09-25 10:06:38,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:38,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602197492] [2020-09-25 10:06:38,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:38,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:38,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:38,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:39,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:39,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:43,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:43,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 10:06:43,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:06:43,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 10:06:43,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:43,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:43,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:06:43,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 10:06:43,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 10:06:43,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:06:44,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:44,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:44,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:44,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:44,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:44,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:44,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:06:44,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:44,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:44,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:44,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:44,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:06:44,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:44,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:44,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:44,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:44,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:44,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:44,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:44,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 10:06:44,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:44,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:06:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:44,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:06:44,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:44,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:06:44,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:44,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:44,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:44,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 10:06:44,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:44,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 10:06:44,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:44,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:44,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:44,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:44,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:06:44,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 45 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:06:44,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602197492] [2020-09-25 10:06:44,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:44,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:06:44,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301968055] [2020-09-25 10:06:44,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:06:44,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:44,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:06:44,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:06:44,473 INFO L87 Difference]: Start difference. First operand 1245 states and 1548 transitions. Second operand 10 states. [2020-09-25 10:06:45,107 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2020-09-25 10:06:48,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:48,166 INFO L93 Difference]: Finished difference Result 2990 states and 3786 transitions. [2020-09-25 10:06:48,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 10:06:48,167 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 192 [2020-09-25 10:06:48,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:48,176 INFO L225 Difference]: With dead ends: 2990 [2020-09-25 10:06:48,176 INFO L226 Difference]: Without dead ends: 1769 [2020-09-25 10:06:48,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2020-09-25 10:06:48,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2020-09-25 10:06:48,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1263. [2020-09-25 10:06:48,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1263 states. [2020-09-25 10:06:48,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1531 transitions. [2020-09-25 10:06:48,248 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1531 transitions. Word has length 192 [2020-09-25 10:06:48,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:48,248 INFO L479 AbstractCegarLoop]: Abstraction has 1263 states and 1531 transitions. [2020-09-25 10:06:48,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:06:48,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1531 transitions. [2020-09-25 10:06:48,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-09-25 10:06:48,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:48,255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:06:48,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:06:48,256 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:48,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:48,256 INFO L82 PathProgramCache]: Analyzing trace with hash 870557698, now seen corresponding path program 1 times [2020-09-25 10:06:48,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:48,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809727512] [2020-09-25 10:06:48,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:48,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:48,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:48,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:49,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:50,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:50,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:51,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:51,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:53,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 10:06:53,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:06:53,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 10:06:53,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:53,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:53,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:06:53,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 10:06:53,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-09-25 10:06:53,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:53,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:53,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:53,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:53,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:53,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:53,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 10:06:53,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:53,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:53,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 10:06:53,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:53,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:53,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:53,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:53,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:53,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 10:06:53,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:53,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:53,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:53,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:53,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 10:06:53,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:53,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:06:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:53,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:53,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:53,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 10:06:53,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:53,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-25 10:06:53,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:53,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:06:53,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 10:06:53,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:54,263 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 46 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:06:54,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809727512] [2020-09-25 10:06:54,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:54,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 10:06:54,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358082137] [2020-09-25 10:06:54,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 10:06:54,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:54,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 10:06:54,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-09-25 10:06:54,267 INFO L87 Difference]: Start difference. First operand 1263 states and 1531 transitions. Second operand 14 states.