/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:25:51,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:25:51,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:25:51,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:25:51,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:25:51,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:25:51,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:25:51,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:25:51,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:25:51,986 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:25:51,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:25:51,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:25:51,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:25:51,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:25:51,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:25:51,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:25:52,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:25:52,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:25:52,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:25:52,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:25:52,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:25:52,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:25:52,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:25:52,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:25:52,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:25:52,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:25:52,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:25:52,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:25:52,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:25:52,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:25:52,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:25:52,031 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:25:52,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:25:52,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:25:52,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:25:52,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:25:52,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:25:52,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:25:52,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:25:52,036 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:25:52,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:25:52,039 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:25:52,088 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:25:52,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:25:52,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:25:52,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:25:52,091 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:25:52,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:25:52,092 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:25:52,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:25:52,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:25:52,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:25:52,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:25:52,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:25:52,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:25:52,094 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:25:52,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:25:52,095 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:25:52,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:25:52,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:25:52,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:25:52,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:25:52,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:25:52,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:25:52,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:25:52,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:25:52,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:25:52,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:25:52,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:25:52,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:25:52,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:25:52,098 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:25:52,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:25:52,562 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:25:52,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:25:52,570 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:25:52,570 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:25:52,571 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label49.c [2020-09-24 19:25:52,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/018b4e885/c63ebec459894f6fac7907f0c0c9c774/FLAG9d137bd38 [2020-09-24 19:25:53,308 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:25:53,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label49.c [2020-09-24 19:25:53,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/018b4e885/c63ebec459894f6fac7907f0c0c9c774/FLAG9d137bd38 [2020-09-24 19:25:53,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/018b4e885/c63ebec459894f6fac7907f0c0c9c774 [2020-09-24 19:25:53,600 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:25:53,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:25:53,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:25:53,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:25:53,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:25:53,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:25:53" (1/1) ... [2020-09-24 19:25:53,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768da4c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:53, skipping insertion in model container [2020-09-24 19:25:53,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:25:53" (1/1) ... [2020-09-24 19:25:53,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:25:53,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:25:54,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:25:54,323 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:25:54,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:25:54,456 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:25:54,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:54 WrapperNode [2020-09-24 19:25:54,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:25:54,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:25:54,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:25:54,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:25:54,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:54" (1/1) ... [2020-09-24 19:25:54,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:54" (1/1) ... [2020-09-24 19:25:54,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:54" (1/1) ... [2020-09-24 19:25:54,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:54" (1/1) ... [2020-09-24 19:25:54,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:54" (1/1) ... [2020-09-24 19:25:54,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:54" (1/1) ... [2020-09-24 19:25:54,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:54" (1/1) ... [2020-09-24 19:25:54,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:25:54,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:25:54,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:25:54,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:25:54,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:25:54,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:25:54,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:25:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:25:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:25:54,665 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:25:54,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:25:54,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:25:54,666 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:25:54,666 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:25:54,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:25:54,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:25:55,994 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:25:55,994 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:25:56,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:25:56 BoogieIcfgContainer [2020-09-24 19:25:56,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:25:56,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:25:56,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:25:56,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:25:56,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:25:53" (1/3) ... [2020-09-24 19:25:56,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fbf2a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:25:56, skipping insertion in model container [2020-09-24 19:25:56,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:25:54" (2/3) ... [2020-09-24 19:25:56,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fbf2a44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:25:56, skipping insertion in model container [2020-09-24 19:25:56,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:25:56" (3/3) ... [2020-09-24 19:25:56,015 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label49.c [2020-09-24 19:25:56,028 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:25:56,042 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:25:56,068 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:25:56,105 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:25:56,105 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:25:56,106 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:25:56,106 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:25:56,106 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:25:56,106 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:25:56,106 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:25:56,106 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:25:56,140 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 19:25:56,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-24 19:25:56,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:25:56,165 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] [2020-09-24 19:25:56,166 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:25:56,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:25:56,174 INFO L82 PathProgramCache]: Analyzing trace with hash 2140935381, now seen corresponding path program 1 times [2020-09-24 19:25:56,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:25:56,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674424918] [2020-09-24 19:25:56,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:25:56,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:56,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:56,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:57,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:57,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-24 19:25:57,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:25:57,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1033 [2020-09-24 19:25:57,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:57,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:25:57,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 19:25:57,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-24 19:25:57,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 19:25:57,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:25:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:25:57,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:25:57,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:25:57,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:25:57,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:25:57,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 19:25:57,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:25:57,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:25:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:25:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 19:25:57,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:25:57,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:25:57,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674424918] [2020-09-24 19:25:57,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:25:57,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:25:57,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310656284] [2020-09-24 19:25:57,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:25:57,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:25:58,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:25:58,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:25:58,020 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-24 19:26:00,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:00,278 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-24 19:26:00,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:26:00,280 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2020-09-24 19:26:00,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:00,329 INFO L225 Difference]: With dead ends: 1270 [2020-09-24 19:26:00,329 INFO L226 Difference]: Without dead ends: 696 [2020-09-24 19:26:00,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:26:00,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-24 19:26:00,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-24 19:26:00,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 19:26:00,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-24 19:26:00,510 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 135 [2020-09-24 19:26:00,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:00,511 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-24 19:26:00,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:26:00,512 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-24 19:26:00,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-24 19:26:00,520 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:00,520 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:00,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:26:00,521 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:00,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:00,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1149676025, now seen corresponding path program 1 times [2020-09-24 19:26:00,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:00,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [141134910] [2020-09-24 19:26:00,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:00,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:00,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:01,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:01,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:01,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:01,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-24 19:26:01,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:01,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1122 [2020-09-24 19:26:01,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:01,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:26:01,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:26:01,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 19:26:01,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:01,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:01,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:01,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:01,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:01,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:01,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 19:26:01,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:01,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:01,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:26:01,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 19:26:01,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:01,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:01,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:01,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:26:01,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:01,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 19:26:01,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:01,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:01,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 19:26:01,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:02,015 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:02,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [141134910] [2020-09-24 19:26:02,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:26:02,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 19:26:02,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957303493] [2020-09-24 19:26:02,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:02,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:02,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:02,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:02,020 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 7 states. [2020-09-24 19:26:04,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:04,540 INFO L93 Difference]: Finished difference Result 1653 states and 2070 transitions. [2020-09-24 19:26:04,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:04,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-09-24 19:26:04,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:04,548 INFO L225 Difference]: With dead ends: 1653 [2020-09-24 19:26:04,548 INFO L226 Difference]: Without dead ends: 1074 [2020-09-24 19:26:04,552 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:26:04,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2020-09-24 19:26:04,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 973. [2020-09-24 19:26:04,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2020-09-24 19:26:04,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1199 transitions. [2020-09-24 19:26:04,601 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1199 transitions. Word has length 157 [2020-09-24 19:26:04,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:04,601 INFO L479 AbstractCegarLoop]: Abstraction has 973 states and 1199 transitions. [2020-09-24 19:26:04,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:04,602 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1199 transitions. [2020-09-24 19:26:04,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-24 19:26:04,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:04,607 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:04,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:26:04,608 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:04,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:04,608 INFO L82 PathProgramCache]: Analyzing trace with hash -2074464918, now seen corresponding path program 1 times [2020-09-24 19:26:04,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:04,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954487424] [2020-09-24 19:26:04,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:04,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:04,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:04,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:05,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:05,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:05,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-24 19:26:05,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:05,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-24 19:26:05,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 19:26:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-24 19:26:05,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:05,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:05,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:05,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:05,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:05,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:05,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:26:05,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:05,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:05,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:05,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:05,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:05,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:05,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:05,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:05,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:05,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:05,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 19:26:05,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:05,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 19:26:05,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:05,966 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:05,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954487424] [2020-09-24 19:26:05,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:05,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:26:05,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002645163] [2020-09-24 19:26:05,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:26:05,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:05,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:26:05,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:26:05,970 INFO L87 Difference]: Start difference. First operand 973 states and 1199 transitions. Second operand 5 states. [2020-09-24 19:26:07,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:07,773 INFO L93 Difference]: Finished difference Result 2542 states and 3253 transitions. [2020-09-24 19:26:07,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:26:07,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-24 19:26:07,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:07,785 INFO L225 Difference]: With dead ends: 2542 [2020-09-24 19:26:07,786 INFO L226 Difference]: Without dead ends: 1593 [2020-09-24 19:26:07,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:26:07,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2020-09-24 19:26:07,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1545. [2020-09-24 19:26:07,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1545 states. [2020-09-24 19:26:07,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 1973 transitions. [2020-09-24 19:26:07,847 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 1973 transitions. Word has length 164 [2020-09-24 19:26:07,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:07,848 INFO L479 AbstractCegarLoop]: Abstraction has 1545 states and 1973 transitions. [2020-09-24 19:26:07,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:26:07,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 1973 transitions. [2020-09-24 19:26:07,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-24 19:26:07,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:07,857 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:07,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:26:07,857 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:07,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:07,858 INFO L82 PathProgramCache]: Analyzing trace with hash 2085014698, now seen corresponding path program 1 times [2020-09-24 19:26:07,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:07,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892807187] [2020-09-24 19:26:07,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:07,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:08,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:08,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:08,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:08,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:08,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-24 19:26:08,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:08,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-24 19:26:08,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:08,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:08,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:26:08,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 19:26:08,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:09,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:09,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:09,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:09,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:09,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:09,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:26:09,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:09,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:09,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:09,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:09,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:09,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:09,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:09,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:09,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:26:09,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:09,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:26:09,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:09,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:09,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:26:09,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:09,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:26:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:09,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:09,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:09,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:26:09,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:09,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 19:26:09,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:09,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:09,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:26:09,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:09,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892807187] [2020-09-24 19:26:09,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:09,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:09,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92520201] [2020-09-24 19:26:09,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:09,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:09,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:09,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:09,347 INFO L87 Difference]: Start difference. First operand 1545 states and 1973 transitions. Second operand 7 states. [2020-09-24 19:26:11,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:11,734 INFO L93 Difference]: Finished difference Result 3333 states and 4334 transitions. [2020-09-24 19:26:11,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:11,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-09-24 19:26:11,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:11,751 INFO L225 Difference]: With dead ends: 3333 [2020-09-24 19:26:11,752 INFO L226 Difference]: Without dead ends: 1812 [2020-09-24 19:26:11,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:26:11,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2020-09-24 19:26:11,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1731. [2020-09-24 19:26:11,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2020-09-24 19:26:11,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2216 transitions. [2020-09-24 19:26:11,875 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2216 transitions. Word has length 189 [2020-09-24 19:26:11,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:11,875 INFO L479 AbstractCegarLoop]: Abstraction has 1731 states and 2216 transitions. [2020-09-24 19:26:11,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:11,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2216 transitions. [2020-09-24 19:26:11,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-09-24 19:26:11,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:11,887 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:11,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:26:11,887 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:11,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:11,888 INFO L82 PathProgramCache]: Analyzing trace with hash 10898859, now seen corresponding path program 1 times [2020-09-24 19:26:11,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:11,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692832619] [2020-09-24 19:26:11,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:11,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:12,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:12,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:12,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:12,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:12,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:12,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-24 19:26:12,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:26:12,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1031 [2020-09-24 19:26:12,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 19:26:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:26:12,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:13,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:13,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:13,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:13,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:13,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:13,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:26:13,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:13,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:13,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:13,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:13,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:13,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:13,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:13,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:13,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 19:26:13,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:13,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:13,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:13,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:26:13,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:13,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 19:26:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:13,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:13,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:13,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:26:13,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:13,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 19:26:13,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:13,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:13,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:13,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:26:13,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:13,306 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:13,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692832619] [2020-09-24 19:26:13,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:13,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:13,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830307602] [2020-09-24 19:26:13,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:13,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:13,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:13,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:13,312 INFO L87 Difference]: Start difference. First operand 1731 states and 2216 transitions. Second operand 7 states. [2020-09-24 19:26:15,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:15,715 INFO L93 Difference]: Finished difference Result 4268 states and 5617 transitions. [2020-09-24 19:26:15,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:26:15,715 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 196 [2020-09-24 19:26:15,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:15,731 INFO L225 Difference]: With dead ends: 4268 [2020-09-24 19:26:15,731 INFO L226 Difference]: Without dead ends: 2561 [2020-09-24 19:26:15,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:26:15,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2561 states. [2020-09-24 19:26:15,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2561 to 2200. [2020-09-24 19:26:15,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2200 states. [2020-09-24 19:26:15,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2200 states to 2200 states and 2782 transitions. [2020-09-24 19:26:15,815 INFO L78 Accepts]: Start accepts. Automaton has 2200 states and 2782 transitions. Word has length 196 [2020-09-24 19:26:15,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:15,816 INFO L479 AbstractCegarLoop]: Abstraction has 2200 states and 2782 transitions. [2020-09-24 19:26:15,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:15,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2200 states and 2782 transitions. [2020-09-24 19:26:15,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-09-24 19:26:15,826 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:15,827 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:26:15,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:26:15,827 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:15,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:15,828 INFO L82 PathProgramCache]: Analyzing trace with hash -932959946, now seen corresponding path program 1 times [2020-09-24 19:26:15,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:15,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940991630] [2020-09-24 19:26:15,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:15,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:16,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:16,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:16,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:16,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-09-24 19:26:16,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:16,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-24 19:26:16,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:16,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:16,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 19:26:16,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:26:16,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:16,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:16,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:16,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:16,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:17,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:17,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:26:17,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:17,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:17,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:17,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:17,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:17,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:17,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:17,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:17,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 19:26:17,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:17,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 19:26:17,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:17,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 19:26:17,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:17,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 19:26:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:17,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:17,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:17,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:17,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:17,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 19:26:17,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:17,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:17,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:17,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:26:17,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:17,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 19:26:17,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:17,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:17,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:17,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:26:17,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:17,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 19:26:17,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:17,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:17,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:26:17,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:17,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:17,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 19:26:17,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:17,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:17,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:17,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:26:17,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:17,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:26:17,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:17,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:26:17,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:17,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:17,472 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 116 proven. 26 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-09-24 19:26:17,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940991630] [2020-09-24 19:26:17,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:17,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:17,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664612530] [2020-09-24 19:26:17,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:17,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:17,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:17,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:17,474 INFO L87 Difference]: Start difference. First operand 2200 states and 2782 transitions. Second operand 7 states. [2020-09-24 19:26:21,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:21,079 INFO L93 Difference]: Finished difference Result 5433 states and 7335 transitions. [2020-09-24 19:26:21,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:21,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-09-24 19:26:21,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:21,103 INFO L225 Difference]: With dead ends: 5433 [2020-09-24 19:26:21,104 INFO L226 Difference]: Without dead ends: 3257 [2020-09-24 19:26:21,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:26:21,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3257 states. [2020-09-24 19:26:21,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3257 to 2862. [2020-09-24 19:26:21,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2862 states. [2020-09-24 19:26:21,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2862 states to 2862 states and 3612 transitions. [2020-09-24 19:26:21,218 INFO L78 Accepts]: Start accepts. Automaton has 2862 states and 3612 transitions. Word has length 255 [2020-09-24 19:26:21,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:21,219 INFO L479 AbstractCegarLoop]: Abstraction has 2862 states and 3612 transitions. [2020-09-24 19:26:21,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:21,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2862 states and 3612 transitions. [2020-09-24 19:26:21,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-09-24 19:26:21,233 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:21,233 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:26:21,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:26:21,234 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:21,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:21,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1529711809, now seen corresponding path program 1 times [2020-09-24 19:26:21,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:21,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802091838] [2020-09-24 19:26:21,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:21,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:21,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:21,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:21,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:22,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:22,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:22,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-09-24 19:26:22,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:26:22,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-09-24 19:26:22,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:22,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:26:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-24 19:26:22,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 19:26:22,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:22,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:22,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:22,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:22,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:22,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:22,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 19:26:22,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:22,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:22,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:22,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:22,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:26:22,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:22,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:22,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:22,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:26:22,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:22,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-24 19:26:22,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:26:22,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:22,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-24 19:26:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:22,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:22,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:22,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:22,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:22,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 19:26:22,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:22,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:22,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:22,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:26:22,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:22,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 19:26:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:22,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:22,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:22,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:26:22,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:22,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 19:26:22,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:26:22,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:22,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:22,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-24 19:26:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:22,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:22,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:22,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:26:22,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:22,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:26:22,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:26:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:22,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:22,900 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 122 proven. 26 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-09-24 19:26:22,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802091838] [2020-09-24 19:26:22,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:22,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:22,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149867174] [2020-09-24 19:26:22,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:22,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:22,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:22,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:22,904 INFO L87 Difference]: Start difference. First operand 2862 states and 3612 transitions. Second operand 8 states. [2020-09-24 19:26:26,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:26,629 INFO L93 Difference]: Finished difference Result 6138 states and 7830 transitions. [2020-09-24 19:26:26,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:26:26,630 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 260 [2020-09-24 19:26:26,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:26,642 INFO L225 Difference]: With dead ends: 6138 [2020-09-24 19:26:26,643 INFO L226 Difference]: Without dead ends: 2899 [2020-09-24 19:26:26,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:26:26,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2020-09-24 19:26:26,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 2844. [2020-09-24 19:26:26,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2844 states. [2020-09-24 19:26:26,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 3357 transitions. [2020-09-24 19:26:26,731 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 3357 transitions. Word has length 260 [2020-09-24 19:26:26,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:26,731 INFO L479 AbstractCegarLoop]: Abstraction has 2844 states and 3357 transitions. [2020-09-24 19:26:26,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:26:26,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 3357 transitions. [2020-09-24 19:26:26,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-24 19:26:26,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:26,744 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2020-09-24 19:26:26,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:26:26,744 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:26,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:26,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1742608754, now seen corresponding path program 1 times [2020-09-24 19:26:26,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:26,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049143103] [2020-09-24 19:26:26,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:26,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:26,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:26,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:27,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:27,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:27,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:27,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:27,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-09-24 19:26:27,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:26:27,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-24 19:26:27,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:26:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-24 19:26:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:26:27,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:27,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:27,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:27,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:27,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:27,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:27,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:27,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:26:27,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:27,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:27,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:27,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:27,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:27,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:27,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:28,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:28,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:28,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:28,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 19:26:28,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:28,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:28,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:28,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 19:26:28,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:28,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 19:26:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:28,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:28,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:28,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:28,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:28,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 19:26:28,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:28,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:28,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:28,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:26:28,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:28,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 19:26:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:28,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:28,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:28,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:26:28,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:28,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 19:26:28,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:28,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:28,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 19:26:28,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:28,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:28,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-24 19:26:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:28,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:28,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:28,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:26:28,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:28,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 19:26:28,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-24 19:26:28,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:28,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:28,356 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 128 proven. 26 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-09-24 19:26:28,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049143103] [2020-09-24 19:26:28,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:28,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 19:26:28,357 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580243653] [2020-09-24 19:26:28,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 19:26:28,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:28,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 19:26:28,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 19:26:28,359 INFO L87 Difference]: Start difference. First operand 2844 states and 3357 transitions. Second operand 9 states. [2020-09-24 19:26:28,910 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2020-09-24 19:26:33,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:33,229 INFO L93 Difference]: Finished difference Result 7064 states and 8979 transitions. [2020-09-24 19:26:33,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 19:26:33,230 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 263 [2020-09-24 19:26:33,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:33,254 INFO L225 Difference]: With dead ends: 7064 [2020-09-24 19:26:33,254 INFO L226 Difference]: Without dead ends: 4554 [2020-09-24 19:26:33,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2020-09-24 19:26:33,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4554 states. [2020-09-24 19:26:33,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4554 to 3746. [2020-09-24 19:26:33,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3746 states. [2020-09-24 19:26:33,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3746 states to 3746 states and 4413 transitions. [2020-09-24 19:26:33,398 INFO L78 Accepts]: Start accepts. Automaton has 3746 states and 4413 transitions. Word has length 263 [2020-09-24 19:26:33,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:33,399 INFO L479 AbstractCegarLoop]: Abstraction has 3746 states and 4413 transitions. [2020-09-24 19:26:33,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 19:26:33,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3746 states and 4413 transitions. [2020-09-24 19:26:33,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-24 19:26:33,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:33,415 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-09-24 19:26:33,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:26:33,415 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:33,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:33,416 INFO L82 PathProgramCache]: Analyzing trace with hash -78724526, now seen corresponding path program 1 times [2020-09-24 19:26:33,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:33,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368492563] [2020-09-24 19:26:33,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:33,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:33,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:33,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:33,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:34,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:34,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:34,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-09-24 19:26:34,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 19:26:34,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 19:26:34,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:26:34,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-24 19:26:34,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 19:26:34,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:34,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:34,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:34,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:34,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:34,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:34,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:26:34,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:34,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:34,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:34,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:34,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:34,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:34,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 19:26:34,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:34,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:26:34,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:34,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:34,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:34,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 19:26:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:34,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:34,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:34,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:34,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:34,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:26:34,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:34,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:34,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:34,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:34,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:34,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-24 19:26:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:34,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:34,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:34,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 19:26:34,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:34,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-24 19:26:34,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:34,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 19:26:34,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:34,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-24 19:26:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:34,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:34,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:34,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 19:26:34,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:34,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 19:26:34,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:34,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:34,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:34,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:26:34,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 181 proven. 2 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-24 19:26:35,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368492563] [2020-09-24 19:26:35,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:35,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:35,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464554102] [2020-09-24 19:26:35,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:35,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:35,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:35,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:35,071 INFO L87 Difference]: Start difference. First operand 3746 states and 4413 transitions. Second operand 8 states. [2020-09-24 19:26:38,069 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-09-24 19:26:38,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:38,410 INFO L93 Difference]: Finished difference Result 8098 states and 9648 transitions. [2020-09-24 19:26:38,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:26:38,414 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 269 [2020-09-24 19:26:38,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:38,431 INFO L225 Difference]: With dead ends: 8098 [2020-09-24 19:26:38,432 INFO L226 Difference]: Without dead ends: 4386 [2020-09-24 19:26:38,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:26:38,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4386 states. [2020-09-24 19:26:38,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4386 to 4046. [2020-09-24 19:26:38,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4046 states. [2020-09-24 19:26:38,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4046 states to 4046 states and 4689 transitions. [2020-09-24 19:26:38,551 INFO L78 Accepts]: Start accepts. Automaton has 4046 states and 4689 transitions. Word has length 269 [2020-09-24 19:26:38,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:38,551 INFO L479 AbstractCegarLoop]: Abstraction has 4046 states and 4689 transitions. [2020-09-24 19:26:38,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:26:38,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4046 states and 4689 transitions. [2020-09-24 19:26:38,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-09-24 19:26:38,568 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:38,569 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:38,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:26:38,569 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:38,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:38,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1755315054, now seen corresponding path program 1 times [2020-09-24 19:26:38,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:38,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973490652] [2020-09-24 19:26:38,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:38,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:38,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:38,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:39,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:39,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:39,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-09-24 19:26:39,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:39,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-24 19:26:39,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 19:26:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-24 19:26:39,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 19:26:39,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:39,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:39,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:39,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:39,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:39,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:39,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:26:39,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:39,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:39,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:39,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:39,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:39,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:39,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:39,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:39,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:26:39,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:39,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 19:26:39,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 19:26:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:39,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:26:39,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:39,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-24 19:26:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:39,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:39,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:39,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:39,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:39,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 19:26:39,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:39,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:39,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:39,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 19:26:39,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:40,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-24 19:26:40,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:40,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:40,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:40,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 19:26:40,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:40,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 19:26:40,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-24 19:26:40,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:40,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 151 proven. 14 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-24 19:26:40,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973490652] [2020-09-24 19:26:40,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:40,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 19:26:40,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442065058] [2020-09-24 19:26:40,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 19:26:40,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:40,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 19:26:40,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:26:40,230 INFO L87 Difference]: Start difference. First operand 4046 states and 4689 transitions. Second operand 8 states. [2020-09-24 19:26:41,383 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-09-24 19:26:42,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:42,864 INFO L93 Difference]: Finished difference Result 8409 states and 9741 transitions. [2020-09-24 19:26:42,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 19:26:42,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 288 [2020-09-24 19:26:42,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:42,878 INFO L225 Difference]: With dead ends: 8409 [2020-09-24 19:26:42,879 INFO L226 Difference]: Without dead ends: 4387 [2020-09-24 19:26:42,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 19:26:42,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2020-09-24 19:26:42,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 4046. [2020-09-24 19:26:42,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4046 states. [2020-09-24 19:26:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4046 states to 4046 states and 4615 transitions. [2020-09-24 19:26:42,994 INFO L78 Accepts]: Start accepts. Automaton has 4046 states and 4615 transitions. Word has length 288 [2020-09-24 19:26:42,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:42,995 INFO L479 AbstractCegarLoop]: Abstraction has 4046 states and 4615 transitions. [2020-09-24 19:26:42,995 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 19:26:42,995 INFO L276 IsEmpty]: Start isEmpty. Operand 4046 states and 4615 transitions. [2020-09-24 19:26:43,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-09-24 19:26:43,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:43,011 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:43,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:26:43,012 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:43,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:43,012 INFO L82 PathProgramCache]: Analyzing trace with hash 567954401, now seen corresponding path program 1 times [2020-09-24 19:26:43,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:43,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521790116] [2020-09-24 19:26:43,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:43,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:43,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:43,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:43,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:43,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:43,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:44,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-09-24 19:26:44,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 19:26:44,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-24 19:26:44,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:44,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:44,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 19:26:44,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-24 19:26:44,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:44,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:44,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:44,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 19:26:44,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:44,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:26:44,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:44,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:44,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:44,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:44,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:44,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 19:26:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:44,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:44,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:44,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:44,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 19:26:44,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:44,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:44,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:44,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:26:44,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:44,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-24 19:26:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:44,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:44,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 19:26:44,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:44,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-24 19:26:44,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:44,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:44,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:44,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-24 19:26:44,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:44,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 19:26:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:44,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:44,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 19:26:44,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:44,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:26:44,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:44,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 19:26:44,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:44,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:44,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-24 19:26:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:44,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:44,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 19:26:44,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:44,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-24 19:26:44,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:44,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:44,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-24 19:26:44,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:44,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 203 proven. 62 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-09-24 19:26:44,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521790116] [2020-09-24 19:26:44,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:44,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:44,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819606902] [2020-09-24 19:26:44,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:44,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:44,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:44,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:44,760 INFO L87 Difference]: Start difference. First operand 4046 states and 4615 transitions. Second operand 7 states.