/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:40:09,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:40:09,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:40:09,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:40:09,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:40:09,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:40:09,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:40:09,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:40:09,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:40:09,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:40:09,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:40:09,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:40:09,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:40:09,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:40:09,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:40:09,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:40:09,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:40:09,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:40:09,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:40:09,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:40:09,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:40:09,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:40:09,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:40:09,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:40:09,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:40:09,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:40:09,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:40:09,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:40:09,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:40:09,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:40:09,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:40:09,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:40:09,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:40:09,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:40:09,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:40:09,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:40:09,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:40:09,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:40:09,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:40:09,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:40:09,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:40:09,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:40:10,000 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:40:10,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:40:10,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:40:10,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:40:10,002 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:40:10,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:40:10,002 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:40:10,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:40:10,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:40:10,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:40:10,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:40:10,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:40:10,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:40:10,004 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:40:10,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:40:10,004 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:40:10,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:40:10,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:40:10,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:40:10,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:40:10,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:40:10,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:40:10,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:40:10,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:40:10,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:40:10,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:40:10,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:40:10,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:40:10,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:40:10,007 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:40:10,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:40:10,497 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:40:10,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:40:10,504 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:40:10,505 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:40:10,506 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label43.c [2020-09-25 14:40:10,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9811563e4/cd5e70a430a7410cbbece1ce40dfef69/FLAG58393b6fe [2020-09-25 14:40:11,311 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:40:11,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label43.c [2020-09-25 14:40:11,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9811563e4/cd5e70a430a7410cbbece1ce40dfef69/FLAG58393b6fe [2020-09-25 14:40:11,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9811563e4/cd5e70a430a7410cbbece1ce40dfef69 [2020-09-25 14:40:11,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:40:11,526 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:40:11,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:11,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:40:11,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:40:11,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:11" (1/1) ... [2020-09-25 14:40:11,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:11, skipping insertion in model container [2020-09-25 14:40:11,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:40:11" (1/1) ... [2020-09-25 14:40:11,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:40:11,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:40:12,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:12,051 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:40:12,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:40:12,362 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:40:12,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12 WrapperNode [2020-09-25 14:40:12,363 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:40:12,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:40:12,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:40:12,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:40:12,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12" (1/1) ... [2020-09-25 14:40:12,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12" (1/1) ... [2020-09-25 14:40:12,405 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12" (1/1) ... [2020-09-25 14:40:12,405 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12" (1/1) ... [2020-09-25 14:40:12,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12" (1/1) ... [2020-09-25 14:40:12,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12" (1/1) ... [2020-09-25 14:40:12,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12" (1/1) ... [2020-09-25 14:40:12,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:40:12,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:40:12,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:40:12,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:40:12,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:40:12,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:40:12,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:40:12,607 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:40:12,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:40:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:40:12,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:40:12,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:40:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:40:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:40:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:40:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:40:14,510 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:40:14,511 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:40:14,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:14 BoogieIcfgContainer [2020-09-25 14:40:14,521 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:40:14,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:40:14,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:40:14,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:40:14,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:40:11" (1/3) ... [2020-09-25 14:40:14,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:14, skipping insertion in model container [2020-09-25 14:40:14,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:40:12" (2/3) ... [2020-09-25 14:40:14,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:40:14, skipping insertion in model container [2020-09-25 14:40:14,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:40:14" (3/3) ... [2020-09-25 14:40:14,531 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label43.c [2020-09-25 14:40:14,543 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:40:14,554 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:40:14,577 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:40:14,612 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:40:14,612 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:40:14,612 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:40:14,613 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:40:14,613 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:40:14,613 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:40:14,613 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:40:14,613 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:40:14,647 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 14:40:14,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-25 14:40:14,667 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:14,669 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] [2020-09-25 14:40:14,669 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:14,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:14,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1883432242, now seen corresponding path program 1 times [2020-09-25 14:40:14,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:14,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11241220] [2020-09-25 14:40:14,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:15,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:15,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:15,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:15,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:16,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:19,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:19,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:19,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:19,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 14:40:19,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:40:19,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4810 [2020-09-25 14:40:19,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:19,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:19,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:40:19,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 14:40:19,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 14:40:19,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:40:19,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:19,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:20,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:20,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:20,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:20,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 14:40:20,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:20,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:20,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:20,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:20,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:40:20,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:20,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:20,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11241220] [2020-09-25 14:40:20,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:40:20,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:40:20,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787704216] [2020-09-25 14:40:20,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:40:20,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:20,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:40:20,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:40:20,110 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 14:40:23,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:23,157 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-25 14:40:23,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:40:23,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 111 [2020-09-25 14:40:23,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:23,186 INFO L225 Difference]: With dead ends: 1248 [2020-09-25 14:40:23,187 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 14:40:23,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:23,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 14:40:23,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-25 14:40:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 14:40:23,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 14:40:23,391 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 111 [2020-09-25 14:40:23,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:23,393 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 14:40:23,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:40:23,393 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 14:40:23,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 14:40:23,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:23,411 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:23,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:40:23,412 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:23,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:23,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1592938585, now seen corresponding path program 1 times [2020-09-25 14:40:23,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:23,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737247947] [2020-09-25 14:40:23,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:23,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:23,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:23,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:24,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:25,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:25,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:27,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:27,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:28,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:28,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 14:40:28,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:40:28,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:40:28,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:28,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 14:40:28,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-25 14:40:28,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:28,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:28,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:28,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:28,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:28,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:28,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:40:28,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:28,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:28,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:28,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:28,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:28,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:28,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:28,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:28,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:28,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:40:28,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:28,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 14:40:28,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:28,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:28,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 14:40:28,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:28,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737247947] [2020-09-25 14:40:28,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:28,711 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:28,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246668312] [2020-09-25 14:40:28,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:28,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:28,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:28,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:28,715 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 14:40:31,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:31,069 INFO L93 Difference]: Finished difference Result 1400 states and 1694 transitions. [2020-09-25 14:40:31,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:31,074 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-09-25 14:40:31,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:31,082 INFO L225 Difference]: With dead ends: 1400 [2020-09-25 14:40:31,082 INFO L226 Difference]: Without dead ends: 801 [2020-09-25 14:40:31,085 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 14:40:31,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2020-09-25 14:40:31,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 776. [2020-09-25 14:40:31,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 776 states. [2020-09-25 14:40:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 898 transitions. [2020-09-25 14:40:31,137 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 898 transitions. Word has length 128 [2020-09-25 14:40:31,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:31,138 INFO L479 AbstractCegarLoop]: Abstraction has 776 states and 898 transitions. [2020-09-25 14:40:31,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:31,139 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 898 transitions. [2020-09-25 14:40:31,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 14:40:31,145 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:31,145 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:40:31,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:40:31,146 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:31,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:31,146 INFO L82 PathProgramCache]: Analyzing trace with hash 980037392, now seen corresponding path program 1 times [2020-09-25 14:40:31,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:31,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825706439] [2020-09-25 14:40:31,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:31,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:31,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:31,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:32,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:32,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:32,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:33,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:34,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:35,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:36,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:36,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 14:40:36,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:40:36,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4817 [2020-09-25 14:40:36,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:36,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:36,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:36,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 14:40:36,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 14:40:36,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:36,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:36,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:36,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:36,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:36,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:36,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:40:36,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:36,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:36,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:36,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:36,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:36,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:36,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:36,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:36,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:36,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 14:40:36,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:36,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 14:40:36,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:36,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:36,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:36,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:36,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:40:36,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:36,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825706439] [2020-09-25 14:40:36,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:36,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:36,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521722884] [2020-09-25 14:40:36,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:36,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:36,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:36,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:36,214 INFO L87 Difference]: Start difference. First operand 776 states and 898 transitions. Second operand 5 states. [2020-09-25 14:40:39,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:39,087 INFO L93 Difference]: Finished difference Result 1709 states and 2048 transitions. [2020-09-25 14:40:39,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:39,088 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-09-25 14:40:39,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:39,095 INFO L225 Difference]: With dead ends: 1709 [2020-09-25 14:40:39,096 INFO L226 Difference]: Without dead ends: 955 [2020-09-25 14:40:39,098 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 14:40:39,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2020-09-25 14:40:39,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 929. [2020-09-25 14:40:39,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-09-25 14:40:39,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1073 transitions. [2020-09-25 14:40:39,126 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1073 transitions. Word has length 133 [2020-09-25 14:40:39,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:39,127 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1073 transitions. [2020-09-25 14:40:39,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:39,127 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1073 transitions. [2020-09-25 14:40:39,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 14:40:39,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:39,131 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:40:39,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:40:39,132 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:39,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:39,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1352270241, now seen corresponding path program 1 times [2020-09-25 14:40:39,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:39,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996736234] [2020-09-25 14:40:39,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:39,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:39,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:39,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:39,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:39,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:41,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:42,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:43,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:44,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:44,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 14:40:44,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:40:44,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 14:40:44,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:44,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:44,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-25 14:40:44,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 14:40:44,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:44,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:44,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:44,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:44,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:44,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:44,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:40:44,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:44,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:44,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:44,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:44,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:44,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:44,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:44,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:44,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:44,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:44,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:44,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 14:40:44,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:44,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:44,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:44,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:44,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:40:44,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:44,408 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:44,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996736234] [2020-09-25 14:40:44,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:44,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:44,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358612603] [2020-09-25 14:40:44,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:44,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:44,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:44,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:44,412 INFO L87 Difference]: Start difference. First operand 929 states and 1073 transitions. Second operand 5 states. [2020-09-25 14:40:46,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:46,581 INFO L93 Difference]: Finished difference Result 2455 states and 2925 transitions. [2020-09-25 14:40:46,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:46,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-09-25 14:40:46,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:46,593 INFO L225 Difference]: With dead ends: 2455 [2020-09-25 14:40:46,593 INFO L226 Difference]: Without dead ends: 1548 [2020-09-25 14:40:46,597 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 14:40:46,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2020-09-25 14:40:46,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1538. [2020-09-25 14:40:46,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2020-09-25 14:40:46,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 1760 transitions. [2020-09-25 14:40:46,650 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 1760 transitions. Word has length 140 [2020-09-25 14:40:46,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:46,651 INFO L479 AbstractCegarLoop]: Abstraction has 1538 states and 1760 transitions. [2020-09-25 14:40:46,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:46,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 1760 transitions. [2020-09-25 14:40:46,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 14:40:46,656 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:46,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:46,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:40:46,657 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:46,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:46,658 INFO L82 PathProgramCache]: Analyzing trace with hash 2005749092, now seen corresponding path program 1 times [2020-09-25 14:40:46,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:46,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127807573] [2020-09-25 14:40:46,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:46,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:46,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:47,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:48,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:50,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:51,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:51,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:51,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-09-25 14:40:51,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:40:51,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:40:51,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:51,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:51,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:51,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-09-25 14:40:51,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-25 14:40:51,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:51,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:51,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:51,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:51,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:51,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:51,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:40:51,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:51,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:51,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:51,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:51,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:51,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:51,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:51,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 14:40:51,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:51,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 14:40:51,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:51,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:51,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:40:51,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:51,951 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:40:51,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127807573] [2020-09-25 14:40:51,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:51,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:40:51,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204180389] [2020-09-25 14:40:51,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:40:51,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:51,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:40:51,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:40:51,954 INFO L87 Difference]: Start difference. First operand 1538 states and 1760 transitions. Second operand 5 states. [2020-09-25 14:40:54,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:40:54,014 INFO L93 Difference]: Finished difference Result 4121 states and 4840 transitions. [2020-09-25 14:40:54,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:40:54,015 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-09-25 14:40:54,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:40:54,028 INFO L225 Difference]: With dead ends: 4121 [2020-09-25 14:40:54,028 INFO L226 Difference]: Without dead ends: 2605 [2020-09-25 14:40:54,033 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 14:40:54,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2605 states. [2020-09-25 14:40:54,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2605 to 2295. [2020-09-25 14:40:54,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2295 states. [2020-09-25 14:40:54,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2295 states to 2295 states and 2707 transitions. [2020-09-25 14:40:54,103 INFO L78 Accepts]: Start accepts. Automaton has 2295 states and 2707 transitions. Word has length 154 [2020-09-25 14:40:54,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:40:54,104 INFO L479 AbstractCegarLoop]: Abstraction has 2295 states and 2707 transitions. [2020-09-25 14:40:54,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:40:54,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2295 states and 2707 transitions. [2020-09-25 14:40:54,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 14:40:54,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:40:54,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:40:54,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:40:54,111 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:40:54,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:40:54,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1465769009, now seen corresponding path program 1 times [2020-09-25 14:40:54,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:40:54,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741363255] [2020-09-25 14:40:54,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:40:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:54,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:54,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:54,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:55,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:56,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:56,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 14:40:56,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:40:56,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2847 [2020-09-25 14:40:56,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:56,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:40:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 14:40:56,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 14:40:56,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:57,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:40:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:57,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:57,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:57,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:57,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:57,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:40:57,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:57,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:57,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:40:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:57,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:40:57,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:57,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:40:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:57,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:57,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:57,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 14:40:57,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:40:57,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 14:40:57,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:57,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:57,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:40:57,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:40:57,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:40:57,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:57,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 14:40:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:40:57,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:57,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:40:57,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:40:57,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:40:57,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:40:57,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 14:40:57,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:40:57,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:40:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:40:57,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:40:57,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:40:57,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:40:57,376 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:40:57,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741363255] [2020-09-25 14:40:57,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:40:57,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:40:57,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751936399] [2020-09-25 14:40:57,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:40:57,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:40:57,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:40:57,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:40:57,379 INFO L87 Difference]: Start difference. First operand 2295 states and 2707 transitions. Second operand 8 states.