/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/Problem10_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:11:02,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:11:02,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:11:02,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:11:02,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:11:02,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:11:02,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:11:02,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:11:02,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:11:02,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:11:02,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:11:02,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:11:02,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:11:02,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:11:02,986 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:11:02,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:11:02,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:11:02,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:11:02,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:11:03,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:11:03,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:11:03,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:11:03,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:11:03,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:11:03,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:11:03,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:11:03,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:11:03,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:11:03,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:11:03,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:11:03,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:11:03,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:11:03,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:11:03,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:11:03,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:11:03,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:11:03,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:11:03,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:11:03,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:11:03,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:11:03,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:11:03,045 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 10:11:03,091 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:11:03,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:11:03,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:11:03,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:11:03,094 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:11:03,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:11:03,095 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:11:03,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:11:03,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:11:03,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:11:03,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:11:03,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:11:03,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:11:03,098 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:11:03,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:11:03,098 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:11:03,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:11:03,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:11:03,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:11:03,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:11:03,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:11:03,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:11:03,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:11:03,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:11:03,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:11:03,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:11:03,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:11:03,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:11:03,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:11:03,101 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 10:11:03,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:11:03,610 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:11:03,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:11:03,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:11:03,620 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:11:03,621 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 10:11:03,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/112854c88/9ea69dc5d2d449f2999c393b8a1528fa/FLAG458603f47 [2020-09-25 10:11:04,374 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:11:04,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label04.c [2020-09-25 10:11:04,390 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/112854c88/9ea69dc5d2d449f2999c393b8a1528fa/FLAG458603f47 [2020-09-25 10:11:04,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/112854c88/9ea69dc5d2d449f2999c393b8a1528fa [2020-09-25 10:11:04,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:11:04,633 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:11:04,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:04,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:11:04,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:11:04,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:04" (1/1) ... [2020-09-25 10:11:04,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42dfe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:04, skipping insertion in model container [2020-09-25 10:11:04,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:11:04" (1/1) ... [2020-09-25 10:11:04,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:11:04,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:11:05,343 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:05,352 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:11:05,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:11:05,498 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:11:05,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:05 WrapperNode [2020-09-25 10:11:05,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:11:05,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:11:05,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:11:05,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:11:05,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:05" (1/1) ... [2020-09-25 10:11:05,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:05" (1/1) ... [2020-09-25 10:11:05,543 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:05" (1/1) ... [2020-09-25 10:11:05,543 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:05" (1/1) ... [2020-09-25 10:11:05,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:05" (1/1) ... [2020-09-25 10:11:05,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:05" (1/1) ... [2020-09-25 10:11:05,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:05" (1/1) ... [2020-09-25 10:11:05,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:11:05,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:11:05,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:11:05,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:11:05,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:05" (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 10:11:05,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:11:05,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:11:05,712 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:11:05,713 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:11:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:11:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:11:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:11:05,713 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:11:05,714 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:11:05,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:11:05,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:11:07,260 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:11:07,260 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:11:07,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:07 BoogieIcfgContainer [2020-09-25 10:11:07,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:11:07,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:11:07,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:11:07,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:11:07,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:11:04" (1/3) ... [2020-09-25 10:11:07,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:07, skipping insertion in model container [2020-09-25 10:11:07,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:11:05" (2/3) ... [2020-09-25 10:11:07,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e40405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:11:07, skipping insertion in model container [2020-09-25 10:11:07,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:11:07" (3/3) ... [2020-09-25 10:11:07,280 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label04.c [2020-09-25 10:11:07,291 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:11:07,303 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:11:07,325 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:11:07,361 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:11:07,362 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:11:07,362 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:11:07,362 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:11:07,362 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:11:07,362 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:11:07,363 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:11:07,363 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:11:07,396 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 10:11:07,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 10:11:07,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:07,411 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] [2020-09-25 10:11:07,412 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:07,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:07,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1435975873, now seen corresponding path program 1 times [2020-09-25 10:11:07,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:07,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001699951] [2020-09-25 10:11:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:07,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:08,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:08,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:08,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 10:11:08,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:08,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 770 [2020-09-25 10:11:08,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:08,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:08,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:11:08,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 10:11:08,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 10:11:08,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:11:08,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:08,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:08,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:08,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:08,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:08,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 10:11:08,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:08,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:08,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:08,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:08,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 10:11:08,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:08,687 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 10:11:08,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001699951] [2020-09-25 10:11:08,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:11:08,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:11:08,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566376190] [2020-09-25 10:11:08,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:11:08,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:08,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:11:08,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:11:08,728 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 10:11:10,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:10,643 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 10:11:10,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:11:10,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-09-25 10:11:10,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:10,668 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 10:11:10,669 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 10:11:10,682 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 10:11:10,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 10:11:10,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 10:11:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 10:11:10,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 10:11:10,778 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 85 [2020-09-25 10:11:10,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:10,779 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 10:11:10,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:11:10,780 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 10:11:10,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 10:11:10,791 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:10,791 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, 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] [2020-09-25 10:11:10,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:11:10,792 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:10,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:10,792 INFO L82 PathProgramCache]: Analyzing trace with hash -2117933451, now seen corresponding path program 1 times [2020-09-25 10:11:10,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:10,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2022850129] [2020-09-25 10:11:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:10,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:10,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:11,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:11,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:13,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 10:11:13,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:11:13,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2358 [2020-09-25 10:11:13,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:13,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:13,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:13,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 10:11:13,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 10:11:13,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:13,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:13,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:13,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:13,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:13,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 10:11:13,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:13,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:13,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:11:13,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:13,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:13,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:13,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:13,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 10:11:13,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:13,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 10:11:13,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:13,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:13,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:13,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 10:11:13,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 10:11:13,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2022850129] [2020-09-25 10:11:13,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:13,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:11:13,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26975784] [2020-09-25 10:11:13,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:11:13,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:13,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:11:13,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:11:13,663 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 8 states. [2020-09-25 10:11:16,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:16,658 INFO L93 Difference]: Finished difference Result 1743 states and 2321 transitions. [2020-09-25 10:11:16,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 10:11:16,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-25 10:11:16,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:16,667 INFO L225 Difference]: With dead ends: 1743 [2020-09-25 10:11:16,668 INFO L226 Difference]: Without dead ends: 1215 [2020-09-25 10:11:16,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:11:16,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2020-09-25 10:11:16,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1171. [2020-09-25 10:11:16,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1171 states. [2020-09-25 10:11:16,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1461 transitions. [2020-09-25 10:11:16,763 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1461 transitions. Word has length 165 [2020-09-25 10:11:16,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:16,765 INFO L479 AbstractCegarLoop]: Abstraction has 1171 states and 1461 transitions. [2020-09-25 10:11:16,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:11:16,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1461 transitions. [2020-09-25 10:11:16,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 10:11:16,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:16,776 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, 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] [2020-09-25 10:11:16,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:11:16,777 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:16,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:16,777 INFO L82 PathProgramCache]: Analyzing trace with hash 185368306, now seen corresponding path program 1 times [2020-09-25 10:11:16,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:16,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33269876] [2020-09-25 10:11:16,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:16,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:16,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:17,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:17,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:18,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:18,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:19,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:21,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:21,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 10:11:21,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:11:21,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 10:11:21,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:21,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:21,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:11:21,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:21,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-09-25 10:11:21,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:22,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:22,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:22,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:22,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:22,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 10:11:22,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:22,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:22,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:22,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:11:22,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:22,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:22,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:22,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:22,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:11:22,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:22,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 10:11:22,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:22,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:22,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:22,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:11:22,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:22,328 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:11:22,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33269876] [2020-09-25 10:11:22,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:22,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 10:11:22,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564617159] [2020-09-25 10:11:22,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 10:11:22,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:22,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 10:11:22,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:11:22,333 INFO L87 Difference]: Start difference. First operand 1171 states and 1461 transitions. Second operand 8 states. [2020-09-25 10:11:25,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:25,506 INFO L93 Difference]: Finished difference Result 3322 states and 4262 transitions. [2020-09-25 10:11:25,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 10:11:25,507 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 174 [2020-09-25 10:11:25,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:25,525 INFO L225 Difference]: With dead ends: 3322 [2020-09-25 10:11:25,525 INFO L226 Difference]: Without dead ends: 2166 [2020-09-25 10:11:25,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:11:25,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2020-09-25 10:11:25,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 2124. [2020-09-25 10:11:25,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2124 states. [2020-09-25 10:11:25,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 2593 transitions. [2020-09-25 10:11:25,618 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 2593 transitions. Word has length 174 [2020-09-25 10:11:25,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:25,625 INFO L479 AbstractCegarLoop]: Abstraction has 2124 states and 2593 transitions. [2020-09-25 10:11:25,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 10:11:25,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 2593 transitions. [2020-09-25 10:11:25,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-09-25 10:11:25,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:25,634 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:25,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:11:25,634 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:25,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:25,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1609125249, now seen corresponding path program 1 times [2020-09-25 10:11:25,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:25,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208249638] [2020-09-25 10:11:25,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:25,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:25,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:25,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:26,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:29,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:30,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:30,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:30,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-09-25 10:11:30,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:11:30,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 10:11:30,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:30,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:30,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 10:11:30,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:11:30,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-09-25 10:11:30,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:30,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:30,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:30,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:30,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:30,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:30,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 10:11:30,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:30,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:30,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:30,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:30,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:11:30,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:30,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:30,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:30,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:31,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:31,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:11:31,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:31,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-25 10:11:31,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:31,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:31,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 10:11:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 10:11:31,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:31,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:11:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:31,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:31,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:31,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:31,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:11:31,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:31,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-09-25 10:11:31,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:31,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:31,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 10:11:31,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:32,139 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 123 proven. 90 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:11:32,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208249638] [2020-09-25 10:11:32,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:32,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:11:32,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214327486] [2020-09-25 10:11:32,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:11:32,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:32,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:11:32,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:11:32,146 INFO L87 Difference]: Start difference. First operand 2124 states and 2593 transitions. Second operand 15 states. [2020-09-25 10:11:40,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:40,177 INFO L93 Difference]: Finished difference Result 7241 states and 9706 transitions. [2020-09-25 10:11:40,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-25 10:11:40,178 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 253 [2020-09-25 10:11:40,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:40,210 INFO L225 Difference]: With dead ends: 7241 [2020-09-25 10:11:40,210 INFO L226 Difference]: Without dead ends: 5230 [2020-09-25 10:11:40,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=272, Invalid=598, Unknown=0, NotChecked=0, Total=870 [2020-09-25 10:11:40,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5230 states. [2020-09-25 10:11:40,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5230 to 4332. [2020-09-25 10:11:40,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4332 states. [2020-09-25 10:11:40,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 5521 transitions. [2020-09-25 10:11:40,395 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 5521 transitions. Word has length 253 [2020-09-25 10:11:40,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:40,395 INFO L479 AbstractCegarLoop]: Abstraction has 4332 states and 5521 transitions. [2020-09-25 10:11:40,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:11:40,396 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 5521 transitions. [2020-09-25 10:11:40,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-09-25 10:11:40,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:40,402 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:40,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:11:40,403 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:40,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:40,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1488860707, now seen corresponding path program 1 times [2020-09-25 10:11:40,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:40,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169380129] [2020-09-25 10:11:40,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:40,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:40,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:40,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:40,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:40,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:41,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:43,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:45,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:45,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-09-25 10:11:45,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 10:11:45,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 10:11:45,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:45,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:45,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 10:11:45,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:11:45,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 202 [2020-09-25 10:11:45,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 10:11:45,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:45,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:45,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:45,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:45,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:45,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:45,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:11:45,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:45,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:45,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:11:45,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:45,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:11:45,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:45,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:45,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:45,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:45,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:45,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 10:11:45,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:45,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 10:11:45,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:45,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:45,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:45,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:45,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 10:11:45,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:45,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 10:11:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:45,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:46,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:46,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:46,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 10:11:46,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:46,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-09-25 10:11:46,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:46,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:46,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:11:46,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:46,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 10:11:46,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 139 proven. 4 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-25 10:11:46,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169380129] [2020-09-25 10:11:46,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:11:46,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 10:11:46,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605996752] [2020-09-25 10:11:46,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:11:46,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:11:46,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:11:46,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:11:46,603 INFO L87 Difference]: Start difference. First operand 4332 states and 5521 transitions. Second operand 10 states. [2020-09-25 10:11:49,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:11:49,827 INFO L93 Difference]: Finished difference Result 9459 states and 12470 transitions. [2020-09-25 10:11:49,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 10:11:49,828 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 256 [2020-09-25 10:11:49,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:11:49,855 INFO L225 Difference]: With dead ends: 9459 [2020-09-25 10:11:49,856 INFO L226 Difference]: Without dead ends: 5587 [2020-09-25 10:11:49,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2020-09-25 10:11:49,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5587 states. [2020-09-25 10:11:50,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5587 to 5544. [2020-09-25 10:11:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5544 states. [2020-09-25 10:11:50,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5544 states to 5544 states and 7004 transitions. [2020-09-25 10:11:50,096 INFO L78 Accepts]: Start accepts. Automaton has 5544 states and 7004 transitions. Word has length 256 [2020-09-25 10:11:50,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:11:50,097 INFO L479 AbstractCegarLoop]: Abstraction has 5544 states and 7004 transitions. [2020-09-25 10:11:50,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:11:50,097 INFO L276 IsEmpty]: Start isEmpty. Operand 5544 states and 7004 transitions. [2020-09-25 10:11:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-09-25 10:11:50,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:11:50,112 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:11:50,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:11:50,112 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:11:50,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:11:50,113 INFO L82 PathProgramCache]: Analyzing trace with hash -954800374, now seen corresponding path program 1 times [2020-09-25 10:11:50,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:11:50,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515077328] [2020-09-25 10:11:50,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:11:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:50,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:50,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:51,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:51,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-09-25 10:11:51,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:11:51,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 942 [2020-09-25 10:11:51,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:51,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:51,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:11:51,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 236 [2020-09-25 10:11:51,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 10:11:51,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:11:51,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:11:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:51,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:51,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 10:11:51,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:51,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:11:51,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:51,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:51,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:11:51,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:51,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:11:51,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:51,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 10:11:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:51,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:51,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:51,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 10:11:51,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:51,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 10:11:51,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:51,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:51,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:11:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:51,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:11:51,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:11:51,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 10:11:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:11:51,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:11:51,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:11:51,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 10:11:51,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:11:51,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 10:11:51,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:11:51,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:11:51,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:11:51,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:11:51,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 10:11:51,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1