/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/Problem01_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:36:24,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:36:24,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:36:25,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:36:25,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:36:25,018 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:36:25,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:36:25,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:36:25,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:36:25,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:36:25,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:36:25,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:36:25,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:36:25,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:36:25,029 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:36:25,030 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:36:25,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:36:25,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:36:25,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:36:25,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:36:25,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:36:25,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:36:25,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:36:25,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:36:25,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:36:25,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:36:25,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:36:25,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:36:25,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:36:25,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:36:25,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:36:25,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:36:25,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:36:25,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:36:25,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:36:25,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:36:25,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:36:25,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:36:25,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:36:25,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:36:25,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:36:25,056 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 14:36:25,082 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:36:25,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:36:25,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:36:25,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:36:25,084 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:36:25,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:36:25,085 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:36:25,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:36:25,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:36:25,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:36:25,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:36:25,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:36:25,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:36:25,086 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:36:25,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:36:25,086 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:36:25,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:36:25,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:36:25,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:36:25,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:36:25,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:36:25,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:36:25,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:36:25,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:36:25,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:36:25,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:36:25,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:36:25,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:36:25,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:36:25,089 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 14:36:25,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:36:25,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:36:25,558 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:36:25,559 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:36:25,560 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:36:25,561 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-25 14:36:25,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d9b63d0f/0883d079287c4a8fa079edc785d65f74/FLAGb6c9e426b [2020-09-25 14:36:26,362 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:36:26,363 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-09-25 14:36:26,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d9b63d0f/0883d079287c4a8fa079edc785d65f74/FLAGb6c9e426b [2020-09-25 14:36:26,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d9b63d0f/0883d079287c4a8fa079edc785d65f74 [2020-09-25 14:36:26,606 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:36:26,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:36:26,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:26,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:36:26,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:36:26,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:26" (1/1) ... [2020-09-25 14:36:26,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d72532b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:26, skipping insertion in model container [2020-09-25 14:36:26,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:26" (1/1) ... [2020-09-25 14:36:26,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:36:26,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:36:27,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:27,290 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:36:27,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:27,573 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:36:27,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:27 WrapperNode [2020-09-25 14:36:27,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:27,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:36:27,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:36:27,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:36:27,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:27" (1/1) ... [2020-09-25 14:36:27,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:27" (1/1) ... [2020-09-25 14:36:27,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:27" (1/1) ... [2020-09-25 14:36:27,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:27" (1/1) ... [2020-09-25 14:36:27,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:27" (1/1) ... [2020-09-25 14:36:27,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:27" (1/1) ... [2020-09-25 14:36:27,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:27" (1/1) ... [2020-09-25 14:36:27,689 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:36:27,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:36:27,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:36:27,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:36:27,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:27" (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 14:36:27,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:36:27,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:36:27,819 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:36:27,819 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:36:27,819 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:36:27,820 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:36:27,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:36:27,822 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:36:27,822 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:36:27,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:36:27,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:36:29,175 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:36:29,176 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:36:29,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:29 BoogieIcfgContainer [2020-09-25 14:36:29,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:36:29,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:36:29,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:36:29,191 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:36:29,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:36:26" (1/3) ... [2020-09-25 14:36:29,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33478af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:29, skipping insertion in model container [2020-09-25 14:36:29,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:27" (2/3) ... [2020-09-25 14:36:29,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33478af7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:29, skipping insertion in model container [2020-09-25 14:36:29,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:29" (3/3) ... [2020-09-25 14:36:29,196 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2020-09-25 14:36:29,210 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:36:29,222 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:36:29,246 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:36:29,283 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:36:29,283 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:36:29,284 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:36:29,284 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:36:29,284 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:36:29,284 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:36:29,284 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:36:29,284 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:36:29,318 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:36:29,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 14:36:29,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:29,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:29,340 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:29,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:29,349 INFO L82 PathProgramCache]: Analyzing trace with hash 576098423, now seen corresponding path program 1 times [2020-09-25 14:36:29,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:29,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036488076] [2020-09-25 14:36:29,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:29,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:30,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:30,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:31,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:32,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:34,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:34,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:34,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:34,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:34,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 14:36:34,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:36:34,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 14:36:34,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:34,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:34,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:36:34,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:36:34,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 14:36:34,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:36:34,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:34,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:34,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:34,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:36:34,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:34,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-25 14:36:34,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:34,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:34,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:36:34,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:35,009 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 14:36:35,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036488076] [2020-09-25 14:36:35,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:36:35,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:36:35,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202811702] [2020-09-25 14:36:35,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:36:35,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:35,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:36:35,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:36:35,043 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 14:36:37,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:37,429 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-25 14:36:37,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:36:37,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-09-25 14:36:37,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:37,475 INFO L225 Difference]: With dead ends: 1235 [2020-09-25 14:36:37,475 INFO L226 Difference]: Without dead ends: 661 [2020-09-25 14:36:37,488 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 14:36:37,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-25 14:36:37,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-25 14:36:37,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-25 14:36:37,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-25 14:36:37,658 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 122 [2020-09-25 14:36:37,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:37,659 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-25 14:36:37,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:36:37,659 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-25 14:36:37,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 14:36:37,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:37,667 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:37,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:36:37,668 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:37,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:37,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1154258004, now seen corresponding path program 1 times [2020-09-25 14:36:37,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:37,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101605364] [2020-09-25 14:36:37,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:37,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:37,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:38,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:38,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:38,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:38,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:39,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:40,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:42,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:42,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 14:36:42,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:36:42,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 14:36:42,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:42,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:42,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:36:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 14:36:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 14:36:42,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:42,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:42,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:42,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:42,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:36:42,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:42,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:36:42,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:42,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:42,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:42,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:42,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:36:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:42,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:42,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:42,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:36:42,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:42,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:36:42,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:42,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:42,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 14:36:42,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:42,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101605364] [2020-09-25 14:36:42,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:42,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:36:42,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633935735] [2020-09-25 14:36:42,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:36:43,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:43,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:36:43,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:36:43,001 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 5 states. [2020-09-25 14:36:44,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:44,942 INFO L93 Difference]: Finished difference Result 1500 states and 1851 transitions. [2020-09-25 14:36:44,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:36:44,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 14:36:44,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:44,954 INFO L225 Difference]: With dead ends: 1500 [2020-09-25 14:36:44,954 INFO L226 Difference]: Without dead ends: 919 [2020-09-25 14:36:44,958 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 14:36:44,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2020-09-25 14:36:44,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 891. [2020-09-25 14:36:44,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 14:36:44,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1084 transitions. [2020-09-25 14:36:44,993 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1084 transitions. Word has length 139 [2020-09-25 14:36:44,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:44,994 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1084 transitions. [2020-09-25 14:36:44,994 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:36:44,994 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1084 transitions. [2020-09-25 14:36:44,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-09-25 14:36:44,999 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:44,999 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:36:45,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:36:45,000 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:45,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:45,000 INFO L82 PathProgramCache]: Analyzing trace with hash -2123224051, now seen corresponding path program 1 times [2020-09-25 14:36:45,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:45,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307656984] [2020-09-25 14:36:45,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:45,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:45,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:45,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:45,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:46,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:48,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:48,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:49,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:50,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:50,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 14:36:50,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:36:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 14:36:50,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:50,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:50,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:36:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-25 14:36:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 14:36:50,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:50,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:50,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:50,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:50,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:36:50,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:50,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:36:50,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:50,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:50,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:50,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:50,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:50,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:50,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:36:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:50,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:50,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:50,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:36:50,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:50,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:36:50,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:50,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:50,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:50,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:50,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:50,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:50,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:36:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:50,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:50,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:50,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:36:50,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:50,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 14:36:50,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:50,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:50,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:36:50,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:50,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:36:50,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:50,789 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 14:36:50,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307656984] [2020-09-25 14:36:50,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:50,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:36:50,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616056028] [2020-09-25 14:36:50,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:36:50,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:50,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:36:50,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:36:50,806 INFO L87 Difference]: Start difference. First operand 891 states and 1084 transitions. Second operand 9 states. [2020-09-25 14:36:52,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:52,557 INFO L93 Difference]: Finished difference Result 1853 states and 2317 transitions. [2020-09-25 14:36:52,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:36:52,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 174 [2020-09-25 14:36:52,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:52,569 INFO L225 Difference]: With dead ends: 1853 [2020-09-25 14:36:52,569 INFO L226 Difference]: Without dead ends: 896 [2020-09-25 14:36:52,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:36:52,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-09-25 14:36:52,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 886. [2020-09-25 14:36:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 886 states. [2020-09-25 14:36:52,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1077 transitions. [2020-09-25 14:36:52,625 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1077 transitions. Word has length 174 [2020-09-25 14:36:52,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:52,627 INFO L479 AbstractCegarLoop]: Abstraction has 886 states and 1077 transitions. [2020-09-25 14:36:52,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:36:52,627 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1077 transitions. [2020-09-25 14:36:52,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 14:36:52,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:52,635 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:36:52,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:36:52,636 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:52,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:52,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1524876455, now seen corresponding path program 1 times [2020-09-25 14:36:52,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:52,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361373704] [2020-09-25 14:36:52,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:52,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:52,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:53,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:53,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:53,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:54,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:56,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:57,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:57,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:57,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 14:36:57,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:36:57,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:36:57,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:57,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:57,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:36:57,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 14:36:57,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 14:36:57,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:57,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:57,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:57,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:57,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:36:57,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:57,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:36:57,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:57,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:57,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:57,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:57,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:36:57,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:57,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:57,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:57,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:36:57,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:57,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:36:57,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:57,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:57,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:57,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:57,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:57,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:57,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:36:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:57,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:58,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:58,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:36:58,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:58,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 14:36:58,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:58,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:36:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:58,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:36:58,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:58,361 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 14:36:58,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361373704] [2020-09-25 14:36:58,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:58,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 14:36:58,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49669594] [2020-09-25 14:36:58,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 14:36:58,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:58,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 14:36:58,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:36:58,364 INFO L87 Difference]: Start difference. First operand 886 states and 1077 transitions. Second operand 10 states. [2020-09-25 14:37:01,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:01,569 INFO L93 Difference]: Finished difference Result 2153 states and 2738 transitions. [2020-09-25 14:37:01,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:37:01,569 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 180 [2020-09-25 14:37:01,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:01,578 INFO L225 Difference]: With dead ends: 2153 [2020-09-25 14:37:01,578 INFO L226 Difference]: Without dead ends: 1203 [2020-09-25 14:37:01,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:37:01,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2020-09-25 14:37:01,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1187. [2020-09-25 14:37:01,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1187 states. [2020-09-25 14:37:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1431 transitions. [2020-09-25 14:37:01,637 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1431 transitions. Word has length 180 [2020-09-25 14:37:01,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:01,638 INFO L479 AbstractCegarLoop]: Abstraction has 1187 states and 1431 transitions. [2020-09-25 14:37:01,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 14:37:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1431 transitions. [2020-09-25 14:37:01,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 14:37:01,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:01,644 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:01,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:37:01,644 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:01,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:01,647 INFO L82 PathProgramCache]: Analyzing trace with hash -598927294, now seen corresponding path program 1 times [2020-09-25 14:37:01,648 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:01,648 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1661923686] [2020-09-25 14:37:01,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:01,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:01,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:02,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:02,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:02,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:03,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:06,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 14:37:06,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:37:06,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 14:37:06,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:06,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:06,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:06,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 14:37:06,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 14:37:06,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:06,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:06,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:06,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:06,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:06,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 14:37:06,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:06,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:06,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:06,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:06,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:06,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:06,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:06,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:06,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:06,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:06,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:37:06,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:06,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:06,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:06,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:06,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:37:06,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:06,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:37:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:06,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:07,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:07,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 14:37:07,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:07,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 14:37:07,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:07,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:07,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:37:07,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:37:07,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:37:07,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1661923686] [2020-09-25 14:37:07,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:07,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:37:07,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952205097] [2020-09-25 14:37:07,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:37:07,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:07,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:37:07,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:37:07,095 INFO L87 Difference]: Start difference. First operand 1187 states and 1431 transitions. Second operand 7 states. [2020-09-25 14:37:09,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:09,219 INFO L93 Difference]: Finished difference Result 2902 states and 3548 transitions. [2020-09-25 14:37:09,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:37:09,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-09-25 14:37:09,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:09,233 INFO L225 Difference]: With dead ends: 2902 [2020-09-25 14:37:09,234 INFO L226 Difference]: Without dead ends: 1739 [2020-09-25 14:37:09,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:37:09,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2020-09-25 14:37:09,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 1540. [2020-09-25 14:37:09,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1540 states. [2020-09-25 14:37:09,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 1792 transitions. [2020-09-25 14:37:09,305 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 1792 transitions. Word has length 184 [2020-09-25 14:37:09,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:09,305 INFO L479 AbstractCegarLoop]: Abstraction has 1540 states and 1792 transitions. [2020-09-25 14:37:09,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:37:09,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 1792 transitions. [2020-09-25 14:37:09,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 14:37:09,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:09,314 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:37:09,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:37:09,314 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:09,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:09,315 INFO L82 PathProgramCache]: Analyzing trace with hash 135215777, now seen corresponding path program 1 times [2020-09-25 14:37:09,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:09,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [36635846] [2020-09-25 14:37:09,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:09,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:09,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:10,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:10,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:10,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:11,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking...