/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_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:38:32,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:38:32,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:38:32,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:38:32,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:38:32,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:38:32,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:38:32,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:38:32,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:38:32,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:38:32,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:38:32,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:38:32,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:38:32,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:38:32,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:38:32,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:38:32,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:38:32,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:38:32,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:38:32,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:38:32,217 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:38:32,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:38:32,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:38:32,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:38:32,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:38:32,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:38:32,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:38:32,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:38:32,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:38:32,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:38:32,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:38:32,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:38:32,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:38:32,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:38:32,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:38:32,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:38:32,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:38:32,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:38:32,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:38:32,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:38:32,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:38:32,251 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 01:38:32,294 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:38:32,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:38:32,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:38:32,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:38:32,298 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:38:32,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:38:32,298 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:38:32,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:38:32,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:38:32,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:38:32,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:38:32,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:38:32,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:38:32,301 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:38:32,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:38:32,301 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:38:32,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:38:32,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:38:32,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:38:32,302 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:38:32,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:38:32,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:38:32,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:38:32,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:38:32,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:38:32,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:38:32,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:38:32,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:38:32,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:38:32,304 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 01:38:32,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:38:32,638 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:38:32,642 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:38:32,643 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:38:32,644 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:38:32,644 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label41.c [2020-10-14 01:38:32,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de00d3241/9e9a39ba573d4f69834a23c6ccd97d60/FLAG5d3a31989 [2020-10-14 01:38:33,656 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:38:33,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label41.c [2020-10-14 01:38:33,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de00d3241/9e9a39ba573d4f69834a23c6ccd97d60/FLAG5d3a31989 [2020-10-14 01:38:34,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de00d3241/9e9a39ba573d4f69834a23c6ccd97d60 [2020-10-14 01:38:34,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:38:34,074 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:38:34,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:38:34,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:38:34,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:38:34,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:38:34" (1/1) ... [2020-10-14 01:38:34,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b309059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:38:34, skipping insertion in model container [2020-10-14 01:38:34,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:38:34" (1/1) ... [2020-10-14 01:38:34,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:38:34,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:38:36,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:38:36,763 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:38:37,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:38:37,939 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:38:37,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:38:37 WrapperNode [2020-10-14 01:38:37,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:38:37,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:38:37,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:38:37,943 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:38:37,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:38:37" (1/1) ... [2020-10-14 01:38:37,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:38:37" (1/1) ... [2020-10-14 01:38:38,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:38:37" (1/1) ... [2020-10-14 01:38:38,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:38:37" (1/1) ... [2020-10-14 01:38:38,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:38:37" (1/1) ... [2020-10-14 01:38:38,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:38:37" (1/1) ... [2020-10-14 01:38:38,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:38:37" (1/1) ... [2020-10-14 01:38:38,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:38:38,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:38:38,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:38:38,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:38:38,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:38:37" (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 01:38:38,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:38:38,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:38:38,467 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:38:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:38:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:38:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:38:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:38:38,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:38:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:38:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:38:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:38:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:38:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:38:38,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:38:38,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:38:38,470 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:38:38,470 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:38:38,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:38:38,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:38:45,423 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:38:45,423 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:38:45,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:38:45 BoogieIcfgContainer [2020-10-14 01:38:45,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:38:45,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:38:45,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:38:45,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:38:45,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:38:34" (1/3) ... [2020-10-14 01:38:45,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1889bd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:38:45, skipping insertion in model container [2020-10-14 01:38:45,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:38:37" (2/3) ... [2020-10-14 01:38:45,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1889bd79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:38:45, skipping insertion in model container [2020-10-14 01:38:45,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:38:45" (3/3) ... [2020-10-14 01:38:45,449 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label41.c [2020-10-14 01:38:45,459 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:38:45,468 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:38:45,482 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:38:45,514 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:38:45,514 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:38:45,514 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:38:45,514 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:38:45,514 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:38:45,515 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:38:45,515 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:38:45,515 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:38:45,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 01:38:45,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1001 [2020-10-14 01:38:45,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:38:45,624 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:38:45,624 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:38:45,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:38:45,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1779732215, now seen corresponding path program 1 times [2020-10-14 01:38:45,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:38:45,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890365160] [2020-10-14 01:38:45,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:38:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:38:47,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:38:48,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:38:51,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:38:51,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1016 [2020-10-14 01:38:51,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:38:51,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5322 [2020-10-14 01:38:51,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:38:51,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:38:51,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 01:38:51,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:38:51,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1010 [2020-10-14 01:38:51,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-14 01:38:53,387 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:38:53,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:38:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:38:53,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:38:53,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:38:53,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:38:53,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:38:53,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-14 01:38:53,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:38:53,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:38:53,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:38:53,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:38:53,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:38:53,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:38:55,467 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 01:38:55,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890365160] [2020-10-14 01:38:55,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:38:55,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 01:38:55,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152363929] [2020-10-14 01:38:55,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 01:38:55,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:38:55,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 01:38:55,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 01:38:55,490 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 4 states. [2020-10-14 01:38:55,667 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:39:08,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:39:08,927 INFO L93 Difference]: Finished difference Result 3765 states and 7006 transitions. [2020-10-14 01:39:08,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:39:08,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1000 [2020-10-14 01:39:08,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:39:08,970 INFO L225 Difference]: With dead ends: 3765 [2020-10-14 01:39:08,970 INFO L226 Difference]: Without dead ends: 2386 [2020-10-14 01:39:08,986 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 01:39:09,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2386 states. [2020-10-14 01:39:09,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2386 to 2373. [2020-10-14 01:39:09,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2373 states. [2020-10-14 01:39:09,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 3971 transitions. [2020-10-14 01:39:09,158 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 3971 transitions. Word has length 1000 [2020-10-14 01:39:09,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:39:09,161 INFO L479 AbstractCegarLoop]: Abstraction has 2373 states and 3971 transitions. [2020-10-14 01:39:09,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 01:39:09,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 3971 transitions. [2020-10-14 01:39:09,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1013 [2020-10-14 01:39:09,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:39:09,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:09,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:39:09,216 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:39:09,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:39:09,217 INFO L82 PathProgramCache]: Analyzing trace with hash 264844698, now seen corresponding path program 1 times [2020-10-14 01:39:09,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:39:09,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697554072] [2020-10-14 01:39:09,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:39:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:39:10,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:39:11,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:39:14,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:39:14,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1030 [2020-10-14 01:39:14,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:39:14,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5218 [2020-10-14 01:39:14,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:39:14,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:39:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:39:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:39:14,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 01:39:14,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:39:15,595 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:39:15,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:39:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:39:15,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:39:15,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:39:15,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:39:15,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:39:15,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-14 01:39:15,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:39:15,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:39:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:39:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:39:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:39:15,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:39:15,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:39:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:39:15,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:39:15,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:39:15,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:39:15,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:39:15,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 01:39:15,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:39:15,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:39:15,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:39:15,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:39:15,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 01:39:15,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:39:16,494 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:39:16,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697554072] [2020-10-14 01:39:16,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:39:16,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:39:16,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146461697] [2020-10-14 01:39:16,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:39:16,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:39:16,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:39:16,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:39:16,500 INFO L87 Difference]: Start difference. First operand 2373 states and 3971 transitions. Second operand 7 states. [2020-10-14 01:39:16,652 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:39:17,557 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 01:39:34,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:39:34,091 INFO L93 Difference]: Finished difference Result 6952 states and 11749 transitions. [2020-10-14 01:39:34,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 01:39:34,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1012 [2020-10-14 01:39:34,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:39:34,121 INFO L225 Difference]: With dead ends: 6952 [2020-10-14 01:39:34,121 INFO L226 Difference]: Without dead ends: 4585 [2020-10-14 01:39:34,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 01:39:34,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4585 states. [2020-10-14 01:39:34,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4585 to 4541. [2020-10-14 01:39:34,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4541 states. [2020-10-14 01:39:34,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 6999 transitions. [2020-10-14 01:39:34,270 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 6999 transitions. Word has length 1012 [2020-10-14 01:39:34,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:39:34,271 INFO L479 AbstractCegarLoop]: Abstraction has 4541 states and 6999 transitions. [2020-10-14 01:39:34,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:39:34,271 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 6999 transitions. [2020-10-14 01:39:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2020-10-14 01:39:34,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:39:34,301 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:34,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:39:34,302 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:39:34,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:39:34,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1405080082, now seen corresponding path program 1 times [2020-10-14 01:39:34,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:39:34,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1455332199] [2020-10-14 01:39:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:39:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:39:34,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:39:35,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:39:39,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:39:39,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1034 [2020-10-14 01:39:39,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:39:39,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-14 01:39:39,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:39:39,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:39:39,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:39:39,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:39:39,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 01:39:39,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:39:39,898 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:39:39,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:39:39,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:39:39,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:39:39,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:39:39,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:39:39,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:39:39,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 01:39:39,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:39:39,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:39:39,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:39:39,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:39:39,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:39:39,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:39:39,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:39:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:39:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:39:40,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:39:40,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:39:40,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:39:40,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-14 01:39:40,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:39:40,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:39:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:39:40,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:39:40,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:39:40,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:39:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:39:40,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1455332199] [2020-10-14 01:39:40,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:39:40,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 01:39:40,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178627354] [2020-10-14 01:39:40,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:39:40,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:39:40,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:39:40,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:39:40,558 INFO L87 Difference]: Start difference. First operand 4541 states and 6999 transitions. Second operand 8 states. [2020-10-14 01:39:40,703 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:39:41,020 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:39:58,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:39:58,744 INFO L93 Difference]: Finished difference Result 13655 states and 21616 transitions. [2020-10-14 01:39:58,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:39:58,745 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1016 [2020-10-14 01:39:58,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:39:58,796 INFO L225 Difference]: With dead ends: 13655 [2020-10-14 01:39:58,796 INFO L226 Difference]: Without dead ends: 9120 [2020-10-14 01:39:58,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:39:58,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9120 states. [2020-10-14 01:39:59,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9120 to 8924. [2020-10-14 01:39:59,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8924 states. [2020-10-14 01:39:59,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8924 states to 8924 states and 13735 transitions. [2020-10-14 01:39:59,088 INFO L78 Accepts]: Start accepts. Automaton has 8924 states and 13735 transitions. Word has length 1016 [2020-10-14 01:39:59,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:39:59,088 INFO L479 AbstractCegarLoop]: Abstraction has 8924 states and 13735 transitions. [2020-10-14 01:39:59,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:39:59,089 INFO L276 IsEmpty]: Start isEmpty. Operand 8924 states and 13735 transitions. [2020-10-14 01:39:59,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1025 [2020-10-14 01:39:59,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:39:59,137 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:39:59,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:39:59,138 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:39:59,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:39:59,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1927173571, now seen corresponding path program 1 times [2020-10-14 01:39:59,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:39:59,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898820890] [2020-10-14 01:39:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:39:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:39:59,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:39:59,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:04,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:40:04,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1044 [2020-10-14 01:40:04,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:40:04,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-14 01:40:04,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:40:04,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:40:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:40:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 01:40:04,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:40:04,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:40:04,974 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:40:04,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:40:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:40:04,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:04,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:40:04,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:40:04,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:40:04,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 01:40:04,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:40:04,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:40:04,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:40:04,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:40:04,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:40:04,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:40:05,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:40:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:40:05,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:05,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:40:05,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:40:05,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:40:05,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 01:40:05,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:40:05,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:40:05,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:40:05,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:40:05,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 01:40:05,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:40:05,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 01:40:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:40:05,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:05,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:40:05,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:40:05,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:40:05,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 01:40:05,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:40:05,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:40:05,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:40:05,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:40:05,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 01:40:05,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:40:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:40:05,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898820890] [2020-10-14 01:40:05,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:40:05,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 01:40:05,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917414884] [2020-10-14 01:40:05,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:40:05,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:40:05,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:40:05,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:40:05,849 INFO L87 Difference]: Start difference. First operand 8924 states and 13735 transitions. Second operand 8 states. [2020-10-14 01:40:05,985 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:40:06,176 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:40:06,837 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:40:31,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:40:31,333 INFO L93 Difference]: Finished difference Result 35455 states and 60139 transitions. [2020-10-14 01:40:31,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 01:40:31,334 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1024 [2020-10-14 01:40:31,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:40:31,476 INFO L225 Difference]: With dead ends: 35455 [2020-10-14 01:40:31,476 INFO L226 Difference]: Without dead ends: 26537 [2020-10-14 01:40:31,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:40:31,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26537 states. [2020-10-14 01:40:32,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26537 to 26289. [2020-10-14 01:40:32,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26289 states. [2020-10-14 01:40:32,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26289 states to 26289 states and 41920 transitions. [2020-10-14 01:40:32,296 INFO L78 Accepts]: Start accepts. Automaton has 26289 states and 41920 transitions. Word has length 1024 [2020-10-14 01:40:32,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:40:32,298 INFO L479 AbstractCegarLoop]: Abstraction has 26289 states and 41920 transitions. [2020-10-14 01:40:32,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:40:32,299 INFO L276 IsEmpty]: Start isEmpty. Operand 26289 states and 41920 transitions. [2020-10-14 01:40:32,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1057 [2020-10-14 01:40:32,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:40:32,443 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:40:32,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:40:32,444 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:40:32,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:40:32,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1992163025, now seen corresponding path program 1 times [2020-10-14 01:40:32,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:40:32,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [223234900] [2020-10-14 01:40:32,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:40:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:40:32,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:33,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:37,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:40:37,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1076 [2020-10-14 01:40:37,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:40:37,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-14 01:40:37,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:40:37,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:40:37,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:40:37,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-14 01:40:37,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 01:40:37,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 01:40:38,216 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:40:38,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:40:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:40:38,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:38,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:40:38,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:40:38,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:40:38,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:40:38,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:40:38,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:40:38,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:40:38,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:40:38,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:40:38,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:40:38,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:40:38,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:40:38,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:38,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:40:38,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:40:38,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:40:38,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:40:38,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:40:38,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:40:38,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:40:38,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:40:38,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 01:40:38,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:40:38,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 01:40:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:40:38,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:40:38,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:40:38,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 01:40:38,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:40:38,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-14 01:40:38,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:40:38,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:40:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:40:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:40:38,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 01:40:38,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:40:39,608 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:40:39,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [223234900] [2020-10-14 01:40:39,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:40:39,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:40:39,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158044987] [2020-10-14 01:40:39,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:40:39,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:40:39,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:40:39,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:40:39,613 INFO L87 Difference]: Start difference. First operand 26289 states and 41920 transitions. Second operand 7 states. [2020-10-14 01:40:39,941 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:40:40,512 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:40:58,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:40:58,427 INFO L93 Difference]: Finished difference Result 80155 states and 152827 transitions. [2020-10-14 01:40:58,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:40:58,428 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1056 [2020-10-14 01:40:58,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:40:58,811 INFO L225 Difference]: With dead ends: 80155 [2020-10-14 01:40:58,812 INFO L226 Difference]: Without dead ends: 53872 [2020-10-14 01:40:58,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:40:59,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53872 states. [2020-10-14 01:41:02,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53872 to 53278. [2020-10-14 01:41:02,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53278 states. [2020-10-14 01:41:02,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53278 states to 53278 states and 87826 transitions. [2020-10-14 01:41:02,540 INFO L78 Accepts]: Start accepts. Automaton has 53278 states and 87826 transitions. Word has length 1056 [2020-10-14 01:41:02,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:41:02,541 INFO L479 AbstractCegarLoop]: Abstraction has 53278 states and 87826 transitions. [2020-10-14 01:41:02,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:41:02,541 INFO L276 IsEmpty]: Start isEmpty. Operand 53278 states and 87826 transitions. [2020-10-14 01:41:02,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2020-10-14 01:41:02,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:41:02,719 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:41:02,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:41:02,720 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:41:02,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:41:02,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1373942215, now seen corresponding path program 1 times [2020-10-14 01:41:02,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:41:02,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012018605] [2020-10-14 01:41:02,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:41:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:02,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:03,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:04,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:04,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:07,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:07,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1086 [2020-10-14 01:41:07,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:41:07,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-14 01:41:07,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:07,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:07,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:41:07,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-14 01:41:07,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 01:41:07,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:41:08,192 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:41:08,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:41:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:08,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:08,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:08,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:41:08,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:41:08,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:41:08,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:08,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:41:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:41:08,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:41:08,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:41:08,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:41:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:08,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:08,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:08,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:41:08,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:41:08,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:41:08,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:08,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:08,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:41:08,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:41:08,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:41:08,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:41:08,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 01:41:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:08,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:08,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:08,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:41:08,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:41:08,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 01:41:08,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:08,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:08,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:41:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:41:08,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:41:08,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:41:08,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-14 01:41:08,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:08,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:08,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:08,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:41:08,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:41:08,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:41:08,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:08,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:08,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:41:08,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:41:08,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:41:08,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:41:08,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-14 01:41:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:08,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:08,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:08,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 01:41:08,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:41:08,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 01:41:08,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:08,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:41:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:41:08,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 01:41:08,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:41:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-14 01:41:09,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012018605] [2020-10-14 01:41:09,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:41:09,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:41:09,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874940020] [2020-10-14 01:41:09,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:41:09,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:41:09,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:41:09,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:41:09,171 INFO L87 Difference]: Start difference. First operand 53278 states and 87826 transitions. Second operand 7 states. [2020-10-14 01:41:09,537 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-14 01:41:09,830 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:41:38,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:41:38,026 INFO L93 Difference]: Finished difference Result 156066 states and 276107 transitions. [2020-10-14 01:41:38,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:41:38,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1062 [2020-10-14 01:41:38,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:41:38,587 INFO L225 Difference]: With dead ends: 156066 [2020-10-14 01:41:38,587 INFO L226 Difference]: Without dead ends: 102794 [2020-10-14 01:41:38,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 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 01:41:38,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102794 states. [2020-10-14 01:41:41,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102794 to 102381. [2020-10-14 01:41:41,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102381 states. [2020-10-14 01:41:41,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102381 states to 102381 states and 167900 transitions. [2020-10-14 01:41:41,947 INFO L78 Accepts]: Start accepts. Automaton has 102381 states and 167900 transitions. Word has length 1062 [2020-10-14 01:41:41,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:41:41,948 INFO L479 AbstractCegarLoop]: Abstraction has 102381 states and 167900 transitions. [2020-10-14 01:41:41,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:41:41,948 INFO L276 IsEmpty]: Start isEmpty. Operand 102381 states and 167900 transitions. [2020-10-14 01:41:42,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1069 [2020-10-14 01:41:42,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:41:42,341 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 01:41:42,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:41:42,342 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:41:42,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:41:42,343 INFO L82 PathProgramCache]: Analyzing trace with hash 885834209, now seen corresponding path program 1 times [2020-10-14 01:41:42,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:41:42,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304005679] [2020-10-14 01:41:42,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:41:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:45,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:45,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:45,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:46,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:47,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:47,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1090 [2020-10-14 01:41:47,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 01:41:47,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5078 [2020-10-14 01:41:47,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:47,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:47,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:41:47,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-14 01:41:47,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 01:41:47,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:41:47,860 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:41:47,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:41:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:47,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:47,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:47,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:41:47,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:41:47,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 01:41:47,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:47,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:47,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:41:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:41:47,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:41:47,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:41:47,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:41:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:47,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:47,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:47,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:41:47,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:41:47,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 01:41:47,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:47,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:47,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:41:47,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:41:47,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:41:47,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:41:47,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-14 01:41:47,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:47,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:47,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:47,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:41:47,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:41:47,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 01:41:47,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:47,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:41:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:41:47,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:41:47,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:41:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 01:41:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:41:48,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:48,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:41:48,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:41:48,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 01:41:48,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:41:48,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-14 01:41:48,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:41:48,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:41:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:41:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:41:48,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 01:41:48,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:41:48,903 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 01:41:48,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304005679] [2020-10-14 01:41:48,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:41:48,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:41:48,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245867869] [2020-10-14 01:41:48,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:41:48,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:41:48,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:41:48,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:41:48,906 INFO L87 Difference]: Start difference. First operand 102381 states and 167900 transitions. Second operand 7 states. [2020-10-14 01:41:49,051 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:41:50,191 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 132