/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 20:03:31,339 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 20:03:31,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 20:03:31,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 20:03:31,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 20:03:31,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 20:03:31,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 20:03:31,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 20:03:31,372 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 20:03:31,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 20:03:31,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 20:03:31,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 20:03:31,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 20:03:31,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 20:03:31,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 20:03:31,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 20:03:31,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 20:03:31,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 20:03:31,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 20:03:31,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 20:03:31,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 20:03:31,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 20:03:31,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 20:03:31,388 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 20:03:31,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 20:03:31,392 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 20:03:31,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 20:03:31,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 20:03:31,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 20:03:31,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 20:03:31,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 20:03:31,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 20:03:31,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 20:03:31,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 20:03:31,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 20:03:31,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 20:03:31,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 20:03:31,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 20:03:31,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 20:03:31,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 20:03:31,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 20:03:31,402 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 20:03:31,425 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 20:03:31,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 20:03:31,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 20:03:31,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 20:03:31,427 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 20:03:31,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 20:03:31,428 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 20:03:31,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 20:03:31,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 20:03:31,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 20:03:31,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 20:03:31,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 20:03:31,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 20:03:31,429 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 20:03:31,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 20:03:31,429 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 20:03:31,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 20:03:31,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 20:03:31,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 20:03:31,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 20:03:31,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 20:03:31,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 20:03:31,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 20:03:31,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 20:03:31,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 20:03:31,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 20:03:31,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 20:03:31,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 20:03:31,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 20:03:31,432 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 20:03:31,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 20:03:31,785 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 20:03:31,788 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 20:03:31,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 20:03:31,791 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 20:03:31,792 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label51.c [2020-10-14 20:03:31,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f9046c86/119562e2dec649bb86eb3011c4b8c3dd/FLAGdd78d6579 [2020-10-14 20:03:32,762 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 20:03:32,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label51.c [2020-10-14 20:03:32,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f9046c86/119562e2dec649bb86eb3011c4b8c3dd/FLAGdd78d6579 [2020-10-14 20:03:33,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6f9046c86/119562e2dec649bb86eb3011c4b8c3dd [2020-10-14 20:03:33,219 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 20:03:33,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 20:03:33,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 20:03:33,226 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 20:03:33,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 20:03:33,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:03:33" (1/1) ... [2020-10-14 20:03:33,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@544d7f41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:33, skipping insertion in model container [2020-10-14 20:03:33,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 08:03:33" (1/1) ... [2020-10-14 20:03:33,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 20:03:33,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 20:03:36,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 20:03:36,052 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 20:03:37,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 20:03:37,306 INFO L208 MainTranslator]: Completed translation [2020-10-14 20:03:37,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:37 WrapperNode [2020-10-14 20:03:37,314 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 20:03:37,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 20:03:37,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 20:03:37,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 20:03:37,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:37" (1/1) ... [2020-10-14 20:03:37,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:37" (1/1) ... [2020-10-14 20:03:37,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:37" (1/1) ... [2020-10-14 20:03:37,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:37" (1/1) ... [2020-10-14 20:03:37,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:37" (1/1) ... [2020-10-14 20:03:37,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:37" (1/1) ... [2020-10-14 20:03:37,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:37" (1/1) ... [2020-10-14 20:03:37,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 20:03:37,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 20:03:37,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 20:03:37,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 20:03:37,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:37" (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 20:03:37,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 20:03:37,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 20:03:37,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 20:03:37,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 20:03:37,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 20:03:37,833 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 20:03:37,833 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 20:03:37,835 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 20:03:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 20:03:37,835 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 20:03:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 20:03:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 20:03:37,836 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 20:03:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 20:03:37,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 20:03:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 20:03:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 20:03:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 20:03:37,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 20:03:44,821 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 20:03:44,821 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 20:03:44,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:03:44 BoogieIcfgContainer [2020-10-14 20:03:44,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 20:03:44,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 20:03:44,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 20:03:44,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 20:03:44,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 08:03:33" (1/3) ... [2020-10-14 20:03:44,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fef3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:03:44, skipping insertion in model container [2020-10-14 20:03:44,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 08:03:37" (2/3) ... [2020-10-14 20:03:44,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fef3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 08:03:44, skipping insertion in model container [2020-10-14 20:03:44,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 08:03:44" (3/3) ... [2020-10-14 20:03:44,855 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label51.c [2020-10-14 20:03:44,869 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 20:03:44,881 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 20:03:44,897 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 20:03:44,931 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 20:03:44,931 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 20:03:44,932 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 20:03:44,932 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 20:03:44,932 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 20:03:44,932 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 20:03:44,932 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 20:03:44,932 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 20:03:44,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 20:03:45,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2020-10-14 20:03:45,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:03:45,051 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] [2020-10-14 20:03:45,051 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:03:45,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:03:45,059 INFO L82 PathProgramCache]: Analyzing trace with hash -822123368, now seen corresponding path program 1 times [2020-10-14 20:03:45,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:03:45,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753950269] [2020-10-14 20:03:45,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:03:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:03:46,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:47,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:51,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:51,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1011 [2020-10-14 20:03:51,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:03:51,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-14 20:03:51,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:51,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:51,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 20:03:51,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:03:51,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1005 [2020-10-14 20:03:51,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 20:03:52,584 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:03:52,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:03:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:03:52,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:03:52,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:03:52,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:03:52,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:03:52,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 20:03:52,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:03:52,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:03:52,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:03:52,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:03:52,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:03:52,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:03:53,784 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 20:03:53,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753950269] [2020-10-14 20:03:53,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 20:03:53,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 20:03:53,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081426993] [2020-10-14 20:03:53,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:03:53,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:03:53,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:03:53,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:03:53,808 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 5 states. [2020-10-14 20:03:53,970 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:03:54,223 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 20:04:14,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:04:14,190 INFO L93 Difference]: Finished difference Result 4858 states and 9164 transitions. [2020-10-14 20:04:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:04:14,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 995 [2020-10-14 20:04:14,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:04:14,244 INFO L225 Difference]: With dead ends: 4858 [2020-10-14 20:04:14,244 INFO L226 Difference]: Without dead ends: 3475 [2020-10-14 20:04:14,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:04:14,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2020-10-14 20:04:14,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3403. [2020-10-14 20:04:14,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3403 states. [2020-10-14 20:04:14,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 5910 transitions. [2020-10-14 20:04:14,478 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 5910 transitions. Word has length 995 [2020-10-14 20:04:14,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:04:14,481 INFO L479 AbstractCegarLoop]: Abstraction has 3403 states and 5910 transitions. [2020-10-14 20:04:14,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:04:14,481 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 5910 transitions. [2020-10-14 20:04:14,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1013 [2020-10-14 20:04:14,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:04:14,565 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:04:14,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 20:04:14,566 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:04:14,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:04:14,567 INFO L82 PathProgramCache]: Analyzing trace with hash 304804303, now seen corresponding path program 1 times [2020-10-14 20:04:14,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:04:14,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381919470] [2020-10-14 20:04:14,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:04:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:15,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:16,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:20,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:20,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1030 [2020-10-14 20:04:20,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:04:20,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 20:04:20,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:20,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 20:04:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-14 20:04:20,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1002 [2020-10-14 20:04:20,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:04:21,188 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:04:21,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:04:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:21,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:21,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:21,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:04:21,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:04:21,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 20:04:21,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:21,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:21,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:04:21,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:04:21,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:04:21,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:04:21,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:04:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:21,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:21,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:21,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-14 20:04:21,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:04:21,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-14 20:04:21,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:21,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:21,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:04:21,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:04:21,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 20:04:21,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:04:22,464 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 20:04:22,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381919470] [2020-10-14 20:04:22,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:04:22,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:04:22,465 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880020503] [2020-10-14 20:04:22,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:04:22,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:04:22,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:04:22,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:04:22,469 INFO L87 Difference]: Start difference. First operand 3403 states and 5910 transitions. Second operand 5 states. [2020-10-14 20:04:22,699 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:04:39,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:04:39,627 INFO L93 Difference]: Finished difference Result 10057 states and 17709 transitions. [2020-10-14 20:04:39,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 20:04:39,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1012 [2020-10-14 20:04:39,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:04:39,669 INFO L225 Difference]: With dead ends: 10057 [2020-10-14 20:04:39,670 INFO L226 Difference]: Without dead ends: 6660 [2020-10-14 20:04:39,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:04:39,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6660 states. [2020-10-14 20:04:39,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6660 to 6596. [2020-10-14 20:04:39,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6596 states. [2020-10-14 20:04:39,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6596 states to 6596 states and 10922 transitions. [2020-10-14 20:04:39,909 INFO L78 Accepts]: Start accepts. Automaton has 6596 states and 10922 transitions. Word has length 1012 [2020-10-14 20:04:39,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:04:39,911 INFO L479 AbstractCegarLoop]: Abstraction has 6596 states and 10922 transitions. [2020-10-14 20:04:39,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 20:04:39,912 INFO L276 IsEmpty]: Start isEmpty. Operand 6596 states and 10922 transitions. [2020-10-14 20:04:39,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1021 [2020-10-14 20:04:39,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:04:39,949 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-14 20:04:39,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 20:04:39,950 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:04:39,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:04:39,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1007764523, now seen corresponding path program 1 times [2020-10-14 20:04:39,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:04:39,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72769783] [2020-10-14 20:04:39,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:04:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:40,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:40,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:41,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:45,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:45,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1040 [2020-10-14 20:04:45,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:04:45,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5295 [2020-10-14 20:04:45,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:45,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:45,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 20:04:45,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:04:45,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 20:04:45,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:04:46,276 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:04:46,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:04:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:46,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:46,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:46,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:04:46,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:04:46,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 20:04:46,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:46,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:04:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:04:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:04:46,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:04:46,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:04:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:46,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:46,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:46,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:46,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 20:04:46,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:04:46,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 20:04:46,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:46,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:46,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:04:46,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:04:46,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 20:04:46,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:04:46,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-14 20:04:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:04:46,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:04:46,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:04:46,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:04:46,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:04:46,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 20:04:46,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:04:46,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:04:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:04:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:04:46,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 20:04:46,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:04:47,198 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 20:04:47,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72769783] [2020-10-14 20:04:47,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:04:47,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 20:04:47,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308026937] [2020-10-14 20:04:47,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 20:04:47,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:04:47,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 20:04:47,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:04:47,214 INFO L87 Difference]: Start difference. First operand 6596 states and 10922 transitions. Second operand 8 states. [2020-10-14 20:04:47,391 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:04:48,248 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 20:05:04,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:05:04,510 INFO L93 Difference]: Finished difference Result 19756 states and 33636 transitions. [2020-10-14 20:05:04,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:05:04,511 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1020 [2020-10-14 20:05:04,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:05:04,586 INFO L225 Difference]: With dead ends: 19756 [2020-10-14 20:05:04,587 INFO L226 Difference]: Without dead ends: 13166 [2020-10-14 20:05:04,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-14 20:05:04,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13166 states. [2020-10-14 20:05:04,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13166 to 13044. [2020-10-14 20:05:04,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13044 states. [2020-10-14 20:05:05,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13044 states to 13044 states and 20595 transitions. [2020-10-14 20:05:05,031 INFO L78 Accepts]: Start accepts. Automaton has 13044 states and 20595 transitions. Word has length 1020 [2020-10-14 20:05:05,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:05:05,031 INFO L479 AbstractCegarLoop]: Abstraction has 13044 states and 20595 transitions. [2020-10-14 20:05:05,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 20:05:05,032 INFO L276 IsEmpty]: Start isEmpty. Operand 13044 states and 20595 transitions. [2020-10-14 20:05:05,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2020-10-14 20:05:05,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:05:05,099 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:05:05,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 20:05:05,100 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:05:05,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:05:05,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1292162089, now seen corresponding path program 1 times [2020-10-14 20:05:05,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:05:05,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788500211] [2020-10-14 20:05:05,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:05:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:05,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:07,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:10,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:10,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1046 [2020-10-14 20:05:10,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:05:10,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5265 [2020-10-14 20:05:10,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:10,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:10,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 20:05:10,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 20:05:10,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1020 [2020-10-14 20:05:10,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:11,449 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:05:11,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:05:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:11,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:11,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:11,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:05:11,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:11,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 20:05:11,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:11,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:11,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:05:11,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:05:11,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:05:11,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:11,590 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-14 20:05:11,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:05:11,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:11,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:11,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:11,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 20:05:11,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:11,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 20:05:11,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:11,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:11,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:05:11,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:05:11,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 20:05:11,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:11,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 20:05:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:11,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:11,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:11,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:05:11,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:11,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 20:05:11,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:11,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:05:11,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:05:11,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 20:05:11,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 20:05:13,204 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 22 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 20:05:13,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788500211] [2020-10-14 20:05:13,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:05:13,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 20:05:13,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413771571] [2020-10-14 20:05:13,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 20:05:13,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:05:13,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 20:05:13,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 20:05:13,208 INFO L87 Difference]: Start difference. First operand 13044 states and 20595 transitions. Second operand 6 states. [2020-10-14 20:05:13,495 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:05:30,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:05:30,182 INFO L93 Difference]: Finished difference Result 39178 states and 66419 transitions. [2020-10-14 20:05:30,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 20:05:30,183 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1026 [2020-10-14 20:05:30,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:05:30,290 INFO L225 Difference]: With dead ends: 39178 [2020-10-14 20:05:30,290 INFO L226 Difference]: Without dead ends: 26140 [2020-10-14 20:05:30,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 20:05:30,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26140 states. [2020-10-14 20:05:31,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26140 to 25946. [2020-10-14 20:05:31,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25946 states. [2020-10-14 20:05:31,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25946 states to 25946 states and 39908 transitions. [2020-10-14 20:05:31,148 INFO L78 Accepts]: Start accepts. Automaton has 25946 states and 39908 transitions. Word has length 1026 [2020-10-14 20:05:31,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:05:31,150 INFO L479 AbstractCegarLoop]: Abstraction has 25946 states and 39908 transitions. [2020-10-14 20:05:31,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 20:05:31,150 INFO L276 IsEmpty]: Start isEmpty. Operand 25946 states and 39908 transitions. [2020-10-14 20:05:31,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2020-10-14 20:05:31,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:05:31,258 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 20:05:31,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 20:05:31,259 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:05:31,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:05:31,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1435739593, now seen corresponding path program 1 times [2020-10-14 20:05:31,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:05:31,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624308879] [2020-10-14 20:05:31,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:05:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:31,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:32,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:36,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:36,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1047 [2020-10-14 20:05:36,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:05:36,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5142 [2020-10-14 20:05:36,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:36,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:36,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 20:05:36,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:05:36,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 20:05:36,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:05:36,794 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:05:36,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:05:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:36,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:36,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:36,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:05:36,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:36,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 20:05:36,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:36,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:36,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:05:36,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:05:36,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:05:36,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:05:36,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:05:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:36,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:36,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:36,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:05:36,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:36,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 20:05:36,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:36,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:36,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 20:05:36,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:05:36,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 20:05:36,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:05:37,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 20:05:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:05:37,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:05:37,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:05:37,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 20:05:37,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:05:37,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-14 20:05:37,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:05:37,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:05:37,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:05:37,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:05:37,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 20:05:37,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:05:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 28 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 20:05:37,526 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624308879] [2020-10-14 20:05:37,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:05:37,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 20:05:37,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684114717] [2020-10-14 20:05:37,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 20:05:37,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:05:37,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 20:05:37,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-14 20:05:37,529 INFO L87 Difference]: Start difference. First operand 25946 states and 39908 transitions. Second operand 10 states. [2020-10-14 20:05:37,672 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 20:05:38,208 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 20:05:38,889 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 20:06:05,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:06:05,960 INFO L93 Difference]: Finished difference Result 80365 states and 140815 transitions. [2020-10-14 20:06:05,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 20:06:05,966 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1027 [2020-10-14 20:06:05,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:06:06,160 INFO L225 Difference]: With dead ends: 80365 [2020-10-14 20:06:06,161 INFO L226 Difference]: Without dead ends: 54425 [2020-10-14 20:06:06,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=160, Invalid=542, Unknown=0, NotChecked=0, Total=702 [2020-10-14 20:06:06,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54425 states. [2020-10-14 20:06:07,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54425 to 53505. [2020-10-14 20:06:07,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53505 states. [2020-10-14 20:06:07,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53505 states to 53505 states and 85445 transitions. [2020-10-14 20:06:07,867 INFO L78 Accepts]: Start accepts. Automaton has 53505 states and 85445 transitions. Word has length 1027 [2020-10-14 20:06:07,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:06:07,868 INFO L479 AbstractCegarLoop]: Abstraction has 53505 states and 85445 transitions. [2020-10-14 20:06:07,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 20:06:07,868 INFO L276 IsEmpty]: Start isEmpty. Operand 53505 states and 85445 transitions. [2020-10-14 20:06:08,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1044 [2020-10-14 20:06:08,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:06:08,021 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:06:08,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 20:06:08,021 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:06:08,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:06:08,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1518466453, now seen corresponding path program 1 times [2020-10-14 20:06:08,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:06:08,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202608212] [2020-10-14 20:06:08,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:06:08,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:08,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:08,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:13,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:13,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1061 [2020-10-14 20:06:13,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 20:06:13,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5080 [2020-10-14 20:06:13,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:13,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 20:06:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 20:06:13,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1055 [2020-10-14 20:06:13,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:13,922 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:06:13,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:06:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:13,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:13,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:13,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:06:13,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:06:13,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 20:06:13,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:13,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:13,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:06:13,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:06:13,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 20:06:13,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:14,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:06:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:14,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:14,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:14,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 20:06:14,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:06:14,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 20:06:14,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:14,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:14,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 20:06:14,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 20:06:14,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-14 20:06:14,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 20:06:15,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202608212] [2020-10-14 20:06:15,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:06:15,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 20:06:15,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556832107] [2020-10-14 20:06:15,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 20:06:15,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:06:15,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 20:06:15,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 20:06:15,309 INFO L87 Difference]: Start difference. First operand 53505 states and 85445 transitions. Second operand 7 states. [2020-10-14 20:06:15,454 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 20:06:15,872 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 20:06:38,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 20:06:38,626 INFO L93 Difference]: Finished difference Result 210210 states and 390268 transitions. [2020-10-14 20:06:38,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 20:06:38,627 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1043 [2020-10-14 20:06:38,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 20:06:39,379 INFO L225 Difference]: With dead ends: 210210 [2020-10-14 20:06:39,380 INFO L226 Difference]: Without dead ends: 156711 [2020-10-14 20:06:39,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-14 20:06:39,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156711 states. [2020-10-14 20:06:43,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156711 to 156015. [2020-10-14 20:06:43,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156015 states. [2020-10-14 20:06:49,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156015 states to 156015 states and 265797 transitions. [2020-10-14 20:06:49,066 INFO L78 Accepts]: Start accepts. Automaton has 156015 states and 265797 transitions. Word has length 1043 [2020-10-14 20:06:49,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 20:06:49,068 INFO L479 AbstractCegarLoop]: Abstraction has 156015 states and 265797 transitions. [2020-10-14 20:06:49,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 20:06:49,068 INFO L276 IsEmpty]: Start isEmpty. Operand 156015 states and 265797 transitions. [2020-10-14 20:06:49,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1052 [2020-10-14 20:06:49,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 20:06:49,558 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-14 20:06:49,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 20:06:49,559 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 20:06:49,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 20:06:49,560 INFO L82 PathProgramCache]: Analyzing trace with hash -711207456, now seen corresponding path program 1 times [2020-10-14 20:06:49,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 20:06:49,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805396762] [2020-10-14 20:06:49,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 20:06:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:49,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:50,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:54,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:54,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:54,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1071 [2020-10-14 20:06:54,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 20:06:54,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5165 [2020-10-14 20:06:54,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:54,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:54,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 20:06:54,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-14 20:06:54,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1002 [2020-10-14 20:06:54,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:55,438 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 20:06:55,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 20:06:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:55,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:55,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:55,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 20:06:55,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:06:55,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 20:06:55,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:55,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:55,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:06:55,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:06:55,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:06:55,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:55,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 20:06:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:55,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:55,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:55,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 20:06:55,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:06:55,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 20:06:55,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:55,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:55,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 20:06:55,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:06:55,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 20:06:55,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:55,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 20:06:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 20:06:55,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 20:06:55,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 20:06:55,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 20:06:55,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 20:06:55,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 20:06:55,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 20:06:55,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 20:06:55,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 20:06:55,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 20:06:55,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 20:06:55,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 20:06:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 20:06:57,063 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805396762] [2020-10-14 20:06:57,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 20:06:57,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 20:06:57,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167035458] [2020-10-14 20:06:57,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 20:06:57,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 20:06:57,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 20:06:57,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 20:06:57,066 INFO L87 Difference]: Start difference. First operand 156015 states and 265797 transitions. Second operand 5 states. [2020-10-14 20:06:57,444 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 130