/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 SequenceOfStatements --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:29:14,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:29:14,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:29:14,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:29:14,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:29:14,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:29:14,196 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:29:14,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:29:14,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:29:14,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:29:14,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:29:14,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:29:14,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:29:14,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:29:14,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:29:14,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:29:14,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:29:14,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:29:14,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:29:14,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:29:14,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:29:14,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:29:14,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:29:14,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:29:14,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:29:14,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:29:14,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:29:14,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:29:14,222 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:29:14,223 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:29:14,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:29:14,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:29:14,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:29:14,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:29:14,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:29:14,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:29:14,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:29:14,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:29:14,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:29:14,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:29:14,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:29:14,231 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 [2020-10-14 01:29:14,266 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:29:14,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:29:14,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:29:14,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:29:14,268 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:29:14,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:29:14,269 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:29:14,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:29:14,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:29:14,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:29:14,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:29:14,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:29:14,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:29:14,271 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:29:14,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:29:14,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:29:14,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:29:14,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:29:14,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:29:14,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:29:14,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:29:14,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:29:14,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:29:14,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:29:14,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:29:14,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:29:14,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:29:14,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:29:14,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:29:14,276 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 -> SequenceOfStatements 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 01:29:14,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:29:14,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:29:14,604 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:29:14,606 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:29:14,606 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:29:14,607 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label04.c [2020-10-14 01:29:14,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e49f9beb6/e6c1a2235f5340a4ae688899a86db5ef/FLAG5aca180b2 [2020-10-14 01:29:15,603 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:29:15,604 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label04.c [2020-10-14 01:29:15,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e49f9beb6/e6c1a2235f5340a4ae688899a86db5ef/FLAG5aca180b2 [2020-10-14 01:29:16,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e49f9beb6/e6c1a2235f5340a4ae688899a86db5ef [2020-10-14 01:29:16,032 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:29:16,034 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:29:16,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:29:16,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:29:16,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:29:16,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:29:16" (1/1) ... [2020-10-14 01:29:16,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da42254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:29:16, skipping insertion in model container [2020-10-14 01:29:16,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:29:16" (1/1) ... [2020-10-14 01:29:16,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:29:16,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:29:18,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:29:18,828 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:29:19,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:29:20,014 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:29:20,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:29:20 WrapperNode [2020-10-14 01:29:20,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:29:20,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:29:20,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:29:20,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:29:20,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:29:20" (1/1) ... [2020-10-14 01:29:20,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:29:20" (1/1) ... [2020-10-14 01:29:20,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:29:20" (1/1) ... [2020-10-14 01:29:20,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:29:20" (1/1) ... [2020-10-14 01:29:20,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:29:20" (1/1) ... [2020-10-14 01:29:20,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:29:20" (1/1) ... [2020-10-14 01:29:20,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:29:20" (1/1) ... [2020-10-14 01:29:20,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:29:20,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:29:20,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:29:20,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:29:20,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:29:20" (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 [2020-10-14 01:29:20,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:29:20,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:29:20,476 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:29:20,476 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:29:20,477 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:29:20,477 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:29:20,477 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:29:20,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:29:20,478 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:29:20,479 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:29:20,479 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:29:20,479 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:29:20,479 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:29:20,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:29:20,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:29:20,480 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:29:20,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:29:20,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:29:20,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:29:27,530 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:29:27,530 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:29:27,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:29:27 BoogieIcfgContainer [2020-10-14 01:29:27,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:29:27,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:29:27,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:29:27,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:29:27,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:29:16" (1/3) ... [2020-10-14 01:29:27,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27270709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:29:27, skipping insertion in model container [2020-10-14 01:29:27,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:29:20" (2/3) ... [2020-10-14 01:29:27,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27270709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:29:27, skipping insertion in model container [2020-10-14 01:29:27,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:29:27" (3/3) ... [2020-10-14 01:29:27,560 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label04.c [2020-10-14 01:29:27,571 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:29:27,583 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:29:27,599 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:29:27,633 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:29:27,633 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:29:27,633 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:29:27,633 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:29:27,633 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:29:27,634 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:29:27,634 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:29:27,634 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:29:27,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 01:29:27,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 956 [2020-10-14 01:29:27,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:29:27,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:29:27,773 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:29:27,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:29:27,781 INFO L82 PathProgramCache]: Analyzing trace with hash -727708040, now seen corresponding path program 1 times [2020-10-14 01:29:27,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:29:27,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572293579] [2020-10-14 01:29:27,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:29:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:29,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:32,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:34,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:34,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 971 [2020-10-14 01:29:34,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:29:34,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5195 [2020-10-14 01:29:34,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:34,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:34,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 01:29:34,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:29:34,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 965 [2020-10-14 01:29:34,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 01:29:35,118 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:29:35,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:29:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:35,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:35,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:35,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:29:35,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:29:35,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 01:29:35,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:35,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:35,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:29:35,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:29:35,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:29:35,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:29:36,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:29:36,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572293579] [2020-10-14 01:29:36,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:29:36,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 01:29:36,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114130407] [2020-10-14 01:29:36,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 01:29:36,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:29:36,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 01:29:36,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 01:29:36,360 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 4 states. [2020-10-14 01:29:36,557 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:29:49,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:29:49,671 INFO L93 Difference]: Finished difference Result 3759 states and 7019 transitions. [2020-10-14 01:29:49,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:29:49,675 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 955 [2020-10-14 01:29:49,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:29:49,727 INFO L225 Difference]: With dead ends: 3759 [2020-10-14 01:29:49,727 INFO L226 Difference]: Without dead ends: 2380 [2020-10-14 01:29:49,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:29:49,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2020-10-14 01:29:49,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2337. [2020-10-14 01:29:49,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2337 states. [2020-10-14 01:29:49,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3804 transitions. [2020-10-14 01:29:49,948 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3804 transitions. Word has length 955 [2020-10-14 01:29:49,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:29:49,951 INFO L479 AbstractCegarLoop]: Abstraction has 2337 states and 3804 transitions. [2020-10-14 01:29:49,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 01:29:49,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3804 transitions. [2020-10-14 01:29:49,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2020-10-14 01:29:49,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:29:49,997 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:29:49,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:29:49,998 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:29:49,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:29:49,999 INFO L82 PathProgramCache]: Analyzing trace with hash 570223213, now seen corresponding path program 1 times [2020-10-14 01:29:49,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:29:50,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2032662812] [2020-10-14 01:29:50,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:29:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:50,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:53,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:55,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:55,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 981 [2020-10-14 01:29:55,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:29:55,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5137 [2020-10-14 01:29:55,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:55,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:29:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:29:55,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:29:55,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:29:56,311 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:29:56,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:29:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:56,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:56,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:56,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:29:56,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:29:56,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 01:29:56,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:56,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:29:56,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:29:56,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:29:56,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:29:56,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:29:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:56,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:56,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:56,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:29:56,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:29:56,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 01:29:56,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:56,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:56,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:29:56,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:29:56,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 01:29:56,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:29:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:29:57,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2032662812] [2020-10-14 01:29:57,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:29:57,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:29:57,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303115673] [2020-10-14 01:29:57,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:29:57,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:29:57,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:29:57,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:29:57,008 INFO L87 Difference]: Start difference. First operand 2337 states and 3804 transitions. Second operand 7 states. [2020-10-14 01:29:57,147 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:30:15,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:30:15,901 INFO L93 Difference]: Finished difference Result 7091 states and 11569 transitions. [2020-10-14 01:30:15,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 01:30:15,902 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 963 [2020-10-14 01:30:15,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:30:15,929 INFO L225 Difference]: With dead ends: 7091 [2020-10-14 01:30:15,929 INFO L226 Difference]: Without dead ends: 4760 [2020-10-14 01:30:15,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 01:30:15,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4760 states. [2020-10-14 01:30:16,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4760 to 4721. [2020-10-14 01:30:16,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4721 states. [2020-10-14 01:30:16,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4721 states to 4721 states and 7663 transitions. [2020-10-14 01:30:16,120 INFO L78 Accepts]: Start accepts. Automaton has 4721 states and 7663 transitions. Word has length 963 [2020-10-14 01:30:16,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:30:16,121 INFO L479 AbstractCegarLoop]: Abstraction has 4721 states and 7663 transitions. [2020-10-14 01:30:16,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:30:16,121 INFO L276 IsEmpty]: Start isEmpty. Operand 4721 states and 7663 transitions. [2020-10-14 01:30:16,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 971 [2020-10-14 01:30:16,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:30:16,182 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:30:16,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:30:16,183 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:30:16,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:30:16,184 INFO L82 PathProgramCache]: Analyzing trace with hash -485279861, now seen corresponding path program 1 times [2020-10-14 01:30:16,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:30:16,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636791819] [2020-10-14 01:30:16,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:30:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:16,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:18,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:21,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:21,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 988 [2020-10-14 01:30:21,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:30:21,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5179 [2020-10-14 01:30:21,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:21,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:21,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:30:21,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:30:21,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 01:30:21,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:30:21,771 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:30:21,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:30:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:21,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:21,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:21,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:30:21,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:30:21,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 01:30:21,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:21,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:30:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:30:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:30:21,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:30:21,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:30:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:21,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:21,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:21,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:30:21,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:30:21,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-14 01:30:21,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:21,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:21,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:30:21,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:30:21,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 01:30:21,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:30:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:30:22,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636791819] [2020-10-14 01:30:22,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:30:22,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 01:30:22,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761868393] [2020-10-14 01:30:22,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:30:22,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:30:22,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:30:22,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:30:22,439 INFO L87 Difference]: Start difference. First operand 4721 states and 7663 transitions. Second operand 8 states. [2020-10-14 01:30:22,580 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:30:23,525 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:30:40,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:30:40,707 INFO L93 Difference]: Finished difference Result 14079 states and 23257 transitions. [2020-10-14 01:30:40,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:30:40,708 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 970 [2020-10-14 01:30:40,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:30:40,755 INFO L225 Difference]: With dead ends: 14079 [2020-10-14 01:30:40,756 INFO L226 Difference]: Without dead ends: 9364 [2020-10-14 01:30:40,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:30:40,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9364 states. [2020-10-14 01:30:41,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9364 to 9149. [2020-10-14 01:30:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9149 states. [2020-10-14 01:30:41,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9149 states to 9149 states and 14274 transitions. [2020-10-14 01:30:41,064 INFO L78 Accepts]: Start accepts. Automaton has 9149 states and 14274 transitions. Word has length 970 [2020-10-14 01:30:41,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:30:41,065 INFO L479 AbstractCegarLoop]: Abstraction has 9149 states and 14274 transitions. [2020-10-14 01:30:41,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:30:41,065 INFO L276 IsEmpty]: Start isEmpty. Operand 9149 states and 14274 transitions. [2020-10-14 01:30:41,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2020-10-14 01:30:41,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:30:41,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:30:41,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:30:41,112 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:30:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:30:41,122 INFO L82 PathProgramCache]: Analyzing trace with hash 233987759, now seen corresponding path program 1 times [2020-10-14 01:30:41,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:30:41,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060884559] [2020-10-14 01:30:41,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:30:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:42,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:42,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:46,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:46,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 990 [2020-10-14 01:30:46,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:30:46,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5149 [2020-10-14 01:30:46,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:46,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:46,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:30:46,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:30:46,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 01:30:46,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:30:47,451 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:30:47,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:30:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:47,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:47,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:47,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:30:47,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:30:47,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 01:30:47,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:47,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:47,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:30:47,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:30:47,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:30:47,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:30:47,599 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-14 01:30:47,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:30:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:47,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:47,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:47,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 01:30:47,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:30:47,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 01:30:47,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:47,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:30:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:30:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:30:47,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:30:48,539 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:30:48,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060884559] [2020-10-14 01:30:48,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:30:48,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:30:48,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903775081] [2020-10-14 01:30:48,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:30:48,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:30:48,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:30:48,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:30:48,542 INFO L87 Difference]: Start difference. First operand 9149 states and 14274 transitions. Second operand 7 states. [2020-10-14 01:30:48,679 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:30:49,484 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:31:06,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:31:06,119 INFO L93 Difference]: Finished difference Result 27765 states and 44852 transitions. [2020-10-14 01:31:06,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:31:06,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 972 [2020-10-14 01:31:06,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:31:06,230 INFO L225 Difference]: With dead ends: 27765 [2020-10-14 01:31:06,231 INFO L226 Difference]: Without dead ends: 18622 [2020-10-14 01:31:06,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:31:06,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18622 states. [2020-10-14 01:31:06,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18622 to 18234. [2020-10-14 01:31:06,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18234 states. [2020-10-14 01:31:06,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18234 states to 18234 states and 27448 transitions. [2020-10-14 01:31:06,755 INFO L78 Accepts]: Start accepts. Automaton has 18234 states and 27448 transitions. Word has length 972 [2020-10-14 01:31:06,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:31:06,756 INFO L479 AbstractCegarLoop]: Abstraction has 18234 states and 27448 transitions. [2020-10-14 01:31:06,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:31:06,756 INFO L276 IsEmpty]: Start isEmpty. Operand 18234 states and 27448 transitions. [2020-10-14 01:31:06,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2020-10-14 01:31:06,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:31:06,829 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:31:06,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:31:06,830 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:31:06,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:31:06,831 INFO L82 PathProgramCache]: Analyzing trace with hash -633516589, now seen corresponding path program 1 times [2020-10-14 01:31:06,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:31:06,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385250858] [2020-10-14 01:31:06,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:31:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:06,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:08,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:11,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:11,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 992 [2020-10-14 01:31:11,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:31:11,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 01:31:11,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:11,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:31:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:31:11,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 01:31:11,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:31:12,300 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:31:12,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:31:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:12,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:12,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:12,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:31:12,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:31:12,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 01:31:12,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:12,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:12,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:31:12,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:31:12,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:31:12,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 01:31:12,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:31:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:12,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:12,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:12,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:31:12,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:31:12,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-14 01:31:12,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:12,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:31:12,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:31:12,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 01:31:12,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:31:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:31:13,094 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385250858] [2020-10-14 01:31:13,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:31:13,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 01:31:13,095 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782419124] [2020-10-14 01:31:13,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:31:13,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:31:13,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:31:13,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:31:13,097 INFO L87 Difference]: Start difference. First operand 18234 states and 27448 transitions. Second operand 8 states. [2020-10-14 01:31:13,237 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:31:13,794 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:31:30,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:31:30,050 INFO L93 Difference]: Finished difference Result 46117 states and 71174 transitions. [2020-10-14 01:31:30,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:31:30,058 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 974 [2020-10-14 01:31:30,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:31:30,164 INFO L225 Difference]: With dead ends: 46117 [2020-10-14 01:31:30,165 INFO L226 Difference]: Without dead ends: 27889 [2020-10-14 01:31:30,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:31:30,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27889 states. [2020-10-14 01:31:31,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27889 to 27522. [2020-10-14 01:31:31,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27522 states. [2020-10-14 01:31:31,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27522 states to 27522 states and 40271 transitions. [2020-10-14 01:31:31,092 INFO L78 Accepts]: Start accepts. Automaton has 27522 states and 40271 transitions. Word has length 974 [2020-10-14 01:31:31,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:31:31,093 INFO L479 AbstractCegarLoop]: Abstraction has 27522 states and 40271 transitions. [2020-10-14 01:31:31,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:31:31,093 INFO L276 IsEmpty]: Start isEmpty. Operand 27522 states and 40271 transitions. [2020-10-14 01:31:31,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1001 [2020-10-14 01:31:31,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:31:31,198 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:31:31,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:31:31,198 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:31:31,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:31:31,199 INFO L82 PathProgramCache]: Analyzing trace with hash -1064143949, now seen corresponding path program 1 times [2020-10-14 01:31:31,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:31:31,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383341991] [2020-10-14 01:31:31,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:31:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:31,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:32,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:36,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:36,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1020 [2020-10-14 01:31:36,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:31:36,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-14 01:31:36,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:36,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 01:31:36,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:31:36,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 01:31:36,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:31:36,668 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:31:36,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:31:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:36,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:36,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:36,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:31:36,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:31:36,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:31:36,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:36,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:31:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:31:36,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:31:36,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:31:36,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:31:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:36,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:36,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:36,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 01:31:36,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:31:36,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 01:31:36,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:36,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:36,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:31:36,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:31:36,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 01:31:36,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:31:36,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 01:31:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:36,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:36,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:36,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 01:31:36,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:31:36,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 01:31:36,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:36,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:31:36,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:31:36,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 01:31:36,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:31:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-14 01:31:37,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383341991] [2020-10-14 01:31:37,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:31:37,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:31:37,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099357535] [2020-10-14 01:31:37,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:31:37,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:31:37,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:31:37,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:31:37,407 INFO L87 Difference]: Start difference. First operand 27522 states and 40271 transitions. Second operand 8 states. [2020-10-14 01:31:37,543 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:31:38,167 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:31:38,662 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-10-14 01:31:39,308 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:32:01,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:32:01,139 INFO L93 Difference]: Finished difference Result 110787 states and 183634 transitions. [2020-10-14 01:32:01,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 01:32:01,140 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1000 [2020-10-14 01:32:01,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:32:01,520 INFO L225 Difference]: With dead ends: 110787 [2020-10-14 01:32:01,520 INFO L226 Difference]: Without dead ends: 83271 [2020-10-14 01:32:01,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:32:01,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83271 states. [2020-10-14 01:32:05,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83271 to 82640. [2020-10-14 01:32:05,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82640 states. [2020-10-14 01:32:05,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82640 states to 82640 states and 126971 transitions. [2020-10-14 01:32:05,747 INFO L78 Accepts]: Start accepts. Automaton has 82640 states and 126971 transitions. Word has length 1000 [2020-10-14 01:32:05,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:32:05,748 INFO L479 AbstractCegarLoop]: Abstraction has 82640 states and 126971 transitions. [2020-10-14 01:32:05,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:32:05,748 INFO L276 IsEmpty]: Start isEmpty. Operand 82640 states and 126971 transitions. [2020-10-14 01:32:06,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1037 [2020-10-14 01:32:06,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:32:06,008 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:32:06,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:32:06,009 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:32:06,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:32:06,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1203952761, now seen corresponding path program 1 times [2020-10-14 01:32:06,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:32:06,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304951630] [2020-10-14 01:32:06,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:32:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:32:06,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:06,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:06,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:08,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:11,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:32:11,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1058 [2020-10-14 01:32:11,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:32:11,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-14 01:32:11,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:32:11,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:32:11,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:32:11,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-14 01:32:11,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 01:32:11,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:32:11,587 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:32:11,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:32:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:32:11,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:11,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:32:11,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:32:11,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:32:11,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:32:11,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:32:11,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:32:11,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:32:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:32:11,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:32:11,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:32:11,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:32:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:32:11,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:11,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:32:11,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 01:32:11,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:32:11,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:32:11,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:32:11,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:32:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:32:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:32:11,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:32:11,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:32:11,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 01:32:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:32:11,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:11,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:32:11,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:32:11,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:32:11,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 01:32:11,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:32:11,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:32:11,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:32:11,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:32:11,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 01:32:11,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:32:11,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 01:32:11,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:32:11,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:11,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:32:11,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 01:32:11,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:32:11,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 01:32:11,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:32:11,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:32:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:32:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:32:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 01:32:11,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:32:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 01:32:12,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304951630] [2020-10-14 01:32:12,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:32:12,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:32:12,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449944365] [2020-10-14 01:32:12,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:32:12,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:32:12,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:32:12,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:32:12,666 INFO L87 Difference]: Start difference. First operand 82640 states and 126971 transitions. Second operand 7 states. [2020-10-14 01:32:12,813 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:32:13,939 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:32:32,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:32:32,212 INFO L93 Difference]: Finished difference Result 246376 states and 413141 transitions. [2020-10-14 01:32:32,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:32:32,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1036 [2020-10-14 01:32:32,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:32:33,016 INFO L225 Difference]: With dead ends: 246376 [2020-10-14 01:32:33,016 INFO L226 Difference]: Without dead ends: 163742 [2020-10-14 01:32:33,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:32:33,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163742 states. [2020-10-14 01:32:39,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163742 to 163133. [2020-10-14 01:32:39,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163133 states. [2020-10-14 01:32:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163133 states to 163133 states and 249002 transitions. [2020-10-14 01:32:40,075 INFO L78 Accepts]: Start accepts. Automaton has 163133 states and 249002 transitions. Word has length 1036 [2020-10-14 01:32:40,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:32:40,075 INFO L479 AbstractCegarLoop]: Abstraction has 163133 states and 249002 transitions. [2020-10-14 01:32:40,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:32:40,075 INFO L276 IsEmpty]: Start isEmpty. Operand 163133 states and 249002 transitions. [2020-10-14 01:32:40,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1049 [2020-10-14 01:32:40,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:32:40,445 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:32:40,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 01:32:40,446 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:32:40,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:32:40,447 INFO L82 PathProgramCache]: Analyzing trace with hash 683877766, now seen corresponding path program 1 times [2020-10-14 01:32:40,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:32:40,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578429757] [2020-10-14 01:32:40,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:32:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:32:40,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:32:43,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking...