/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:07:51,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:07:51,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:07:51,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:07:51,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:07:51,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:07:51,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:07:51,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:07:51,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:07:51,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:07:51,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:07:51,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:07:51,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:07:51,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:07:51,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:07:51,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:07:51,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:07:51,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:07:51,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:07:51,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:07:51,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:07:51,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:07:51,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:07:51,165 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:07:51,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:07:51,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:07:51,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:07:51,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:07:51,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:07:51,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:07:51,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:07:51,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:07:51,184 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:07:51,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:07:51,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:07:51,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:07:51,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:07:51,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:07:51,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:07:51,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:07:51,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:07:51,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:07:51,233 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:07:51,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:07:51,235 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:07:51,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:07:51,236 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:07:51,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:07:51,236 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:07:51,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:07:51,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:07:51,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:07:51,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:07:51,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:07:51,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:07:51,238 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:07:51,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:07:51,238 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:07:51,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:07:51,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:07:51,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:07:51,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:07:51,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:07:51,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:07:51,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:07:51,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:07:51,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:07:51,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:07:51,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:07:51,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:07:51,241 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:07:51,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:07:51,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:07:51,731 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:07:51,737 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:07:51,738 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:07:51,739 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:07:51,740 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-09-25 11:07:51,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/004a1d7bf/53914f92bcb345a8972bc501daf3ade4/FLAGfedbc5723 [2020-09-25 11:07:52,390 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:07:52,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-09-25 11:07:52,400 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/004a1d7bf/53914f92bcb345a8972bc501daf3ade4/FLAGfedbc5723 [2020-09-25 11:07:52,713 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/004a1d7bf/53914f92bcb345a8972bc501daf3ade4 [2020-09-25 11:07:52,729 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:07:52,735 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:07:52,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:07:52,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:07:52,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:07:52,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:07:52" (1/1) ... [2020-09-25 11:07:52,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3161b126 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:52, skipping insertion in model container [2020-09-25 11:07:52,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:07:52" (1/1) ... [2020-09-25 11:07:52,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:07:52,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:07:53,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:07:53,031 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:07:53,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:07:53,076 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:07:53,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:53 WrapperNode [2020-09-25 11:07:53,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:07:53,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:07:53,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:07:53,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:07:53,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:53" (1/1) ... [2020-09-25 11:07:53,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:53" (1/1) ... [2020-09-25 11:07:53,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:53" (1/1) ... [2020-09-25 11:07:53,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:53" (1/1) ... [2020-09-25 11:07:53,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:53" (1/1) ... [2020-09-25 11:07:53,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:53" (1/1) ... [2020-09-25 11:07:53,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:53" (1/1) ... [2020-09-25 11:07:53,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:07:53,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:07:53,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:07:53,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:07:53,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:07:53,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:07:53,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:07:53,264 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 11:07:53,264 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 11:07:53,265 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:07:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:07:53,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:07:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 11:07:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 11:07:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:07:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:07:53,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:07:53,535 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:07:53,535 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:07:53,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:53 BoogieIcfgContainer [2020-09-25 11:07:53,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:07:53,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:07:53,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:07:53,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:07:53,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:07:52" (1/3) ... [2020-09-25 11:07:53,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f00175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:07:53, skipping insertion in model container [2020-09-25 11:07:53,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:53" (2/3) ... [2020-09-25 11:07:53,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31f00175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:07:53, skipping insertion in model container [2020-09-25 11:07:53,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:53" (3/3) ... [2020-09-25 11:07:53,551 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-2.c [2020-09-25 11:07:53,563 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:07:53,574 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:07:53,593 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:07:53,623 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:07:53,624 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:07:53,624 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:07:53,624 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:07:53,624 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:07:53,624 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:07:53,624 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:07:53,624 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:07:53,645 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 11:07:53,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:07:53,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:53,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:53,655 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:53,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:53,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 11:07:53,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:53,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393475325] [2020-09-25 11:07:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:53,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:54,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:07:54,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:54,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 11:07:54,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:54,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:54,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:54,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:07:54,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:54,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:07:54,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:54,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:54,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:54,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:54,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:54,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:54,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:54,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:54,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:54,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:54,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:54,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:54,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:54,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:54,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:54,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:07:54,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:54,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:54,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:07:54,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:54,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:07:54,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:07:54,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393475325] [2020-09-25 11:07:54,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:54,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:07:54,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432636264] [2020-09-25 11:07:54,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:07:54,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:54,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:07:54,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:07:54,221 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 11:07:54,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:54,409 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 11:07:54,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:07:54,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 11:07:54,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:54,426 INFO L225 Difference]: With dead ends: 58 [2020-09-25 11:07:54,426 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 11:07:54,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:07:54,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 11:07:54,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 11:07:54,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:07:54,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 11:07:54,497 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 11:07:54,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:54,498 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 11:07:54,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:07:54,498 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 11:07:54,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 11:07:54,501 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:54,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:54,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:07:54,502 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:54,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:54,503 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 11:07:54,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:54,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711487554] [2020-09-25 11:07:54,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:54,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:54,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 11:07:54,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:54,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-25 11:07:54,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:54,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:54,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:54,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:54,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:54,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:54,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:54,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:54,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:54,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:54,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:54,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:54,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:54,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:54,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:54,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:54,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:54,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:54,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:54,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 11:07:54,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:54,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:54,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:54,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:54,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:54,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:54,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:07:54,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711487554] [2020-09-25 11:07:54,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:54,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:07:54,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284392559] [2020-09-25 11:07:54,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:07:54,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:54,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:07:54,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:07:54,875 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 11:07:54,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:54,947 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 11:07:54,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:07:54,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 11:07:54,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:54,950 INFO L225 Difference]: With dead ends: 50 [2020-09-25 11:07:54,951 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 11:07:54,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:07:54,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 11:07:54,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 11:07:54,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:07:54,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 11:07:54,963 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 11:07:54,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:54,964 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 11:07:54,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:07:54,964 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 11:07:54,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 11:07:54,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:54,966 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:54,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:07:54,967 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:54,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:54,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 11:07:54,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:54,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634722676] [2020-09-25 11:07:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:54,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:55,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:55,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:55,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:57,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 11:07:57,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:57,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2042 [2020-09-25 11:07:57,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:57,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:57,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:57,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:57,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:07:57,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:57,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:57,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:57,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:57,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:57,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:57,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:57,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:57,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:57,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:57,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:57,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:57,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:57,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:57,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:57,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:57,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 11:07:57,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:57,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:57,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:07:57,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:57,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:57,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:57,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:57,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:07:57,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:57,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:57,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:57,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:57,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:57,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:07:57,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:57,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:57,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:57,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:57,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:07:57,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:57,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:57,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:57,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:57,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:57,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:57,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:07:57,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634722676] [2020-09-25 11:07:57,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:57,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:07:57,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092347708] [2020-09-25 11:07:57,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:57,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:57,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:57,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:57,432 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 11:07:57,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:57,634 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 11:07:57,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:57,636 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 11:07:57,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:57,640 INFO L225 Difference]: With dead ends: 58 [2020-09-25 11:07:57,640 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 11:07:57,642 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:07:57,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 11:07:57,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 11:07:57,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 11:07:57,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 11:07:57,667 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 11:07:57,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:57,668 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 11:07:57,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:57,668 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 11:07:57,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 11:07:57,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:57,673 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 11:07:57,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:07:57,673 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:57,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:57,675 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 11:07:57,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:57,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525224979] [2020-09-25 11:07:57,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:57,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:57,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:59,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:07:59,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:07:59,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1826 [2020-09-25 11:07:59,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:59,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:59,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:07:59,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:59,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:59,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:59,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:59,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:59,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:59,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:59,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:59,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:59,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:59,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:59,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:59,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:59,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:00,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:08:00,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:08:00,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-09-25 11:08:00,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:00,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:00,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:00,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:08:00,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:00,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:00,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:00,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:00,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:00,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:08:00,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:00,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:00,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:00,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:00,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:08:00,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:00,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:00,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:00,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:00,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:00,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:08:00,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:00,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:00,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:00,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:00,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:08:00,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525224979] [2020-09-25 11:08:00,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:00,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:08:00,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982250742] [2020-09-25 11:08:00,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:08:00,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:00,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:08:00,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:08:00,197 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 11:08:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:00,363 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 11:08:00,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:08:00,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 11:08:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:00,370 INFO L225 Difference]: With dead ends: 72 [2020-09-25 11:08:00,370 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 11:08:00,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:08:00,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 11:08:00,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-09-25 11:08:00,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 11:08:00,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 11:08:00,399 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 35 [2020-09-25 11:08:00,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:00,399 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 11:08:00,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:08:00,400 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 11:08:00,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 11:08:00,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:00,404 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:00,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:08:00,405 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:00,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:00,405 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 11:08:00,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:00,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793554465] [2020-09-25 11:08:00,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:00,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:00,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:04,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:05,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 11:08:05,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:08:05,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:08:05,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:05,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:05,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:05,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 11:08:05,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:05,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:05,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:05,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:05,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:05,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:05,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:05,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:05,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:05,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:05,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:05,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:05,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:05,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:07,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:09,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:08:09,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:08:09,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3777 [2020-09-25 11:08:09,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:09,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:09,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:09,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:08:09,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:09,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:09,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:09,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:09,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:09,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 11:08:09,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:09,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:09,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:09,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:09,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:09,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:09,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:09,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:09,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:08:09,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:09,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:09,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:09,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:08:09,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:09,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:09,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:09,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:09,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:08:09,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:09,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:09,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:09,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:09,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:09,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:09,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:09,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:09,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:09,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:09,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:09,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:08:09,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:09,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:09,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:09,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:08:09,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:09,455 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 11:08:09,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793554465] [2020-09-25 11:08:09,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:09,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:08:09,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875005136] [2020-09-25 11:08:09,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:08:09,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:09,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:08:09,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:08:09,459 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 11:08:09,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:09,608 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-09-25 11:08:09,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:08:09,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 11:08:09,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:09,612 INFO L225 Difference]: With dead ends: 64 [2020-09-25 11:08:09,613 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 11:08:09,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:08:09,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 11:08:09,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 11:08:09,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 11:08:09,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 11:08:09,630 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 51 [2020-09-25 11:08:09,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:09,630 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 11:08:09,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:08:09,631 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 11:08:09,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 11:08:09,640 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:09,641 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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] [2020-09-25 11:08:09,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:08:09,641 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:09,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:09,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 11:08:09,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:09,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174421695] [2020-09-25 11:08:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:09,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:14,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:14,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:14,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 11:08:14,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:08:14,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 11:08:14,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:14,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:14,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:14,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:14,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 11:08:14,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:14,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:14,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:14,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:14,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:14,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:14,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:14,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:14,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:14,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:14,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:14,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:14,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:14,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:14,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:14,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:14,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:14,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:14,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:19,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 11:08:19,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:08:19,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:08:19,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:19,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:08:19,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:08:19,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 11:08:19,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:19,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:19,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:19,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:19,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:08:19,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 11:08:19,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:19,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:19,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:08:19,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:19,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:19,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:19,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:19,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:19,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:19,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 11:08:19,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:19,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:19,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:19,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:19,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:19,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:19,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:19,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:19,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:19,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:19,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:19,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:19,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:08:19,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:19,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:19,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:19,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:19,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:20,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:20,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:20,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-25 11:08:20,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:20,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:20,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:20,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:20,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:20,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:20,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:20,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:20,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:20,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:20,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:20,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:08:20,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:20,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:20,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:20,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:20,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:20,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:20,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:20,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:20,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:08:20,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:20,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:20,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:20,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:20,182 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 11 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 11:08:20,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174421695] [2020-09-25 11:08:20,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:20,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:08:20,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089818671] [2020-09-25 11:08:20,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:08:20,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:20,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:08:20,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:08:20,186 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 11 states. [2020-09-25 11:08:20,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:20,460 INFO L93 Difference]: Finished difference Result 101 states and 132 transitions. [2020-09-25 11:08:20,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:08:20,461 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 11:08:20,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:20,462 INFO L225 Difference]: With dead ends: 101 [2020-09-25 11:08:20,462 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 11:08:20,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-09-25 11:08:20,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 11:08:20,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-09-25 11:08:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-25 11:08:20,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-09-25 11:08:20,485 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 67 [2020-09-25 11:08:20,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:20,489 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-09-25 11:08:20,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:08:20,489 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-09-25 11:08:20,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 11:08:20,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:20,495 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2020-09-25 11:08:20,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:08:20,495 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:20,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:20,496 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 11:08:20,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:20,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920032316] [2020-09-25 11:08:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:20,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:23,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:25,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 11:08:25,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:08:25,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:08:25,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:25,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:25,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:25,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:08:25,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:08:25,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:25,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:25,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:25,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:25,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:25,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:25,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:25,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:25,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:25,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:25,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:25,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:30,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:08:30,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:08:30,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:08:30,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:30,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:30,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:30,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:08:30,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:08:30,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:30,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:30,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:30,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:08:30,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:08:30,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-09-25 11:08:30,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:30,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:30,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:08:30,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:30,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:30,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:30,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:30,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:30,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:08:30,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:30,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:30,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:30,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:30,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:08:30,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:30,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:30,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:30,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:30,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:30,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:08:30,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:30,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:30,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:30,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:30,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:30,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:30,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 11:08:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:30,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:30,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:31,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:08:31,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:08:31,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 11:08:31,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:31,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:31,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:08:31,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:31,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:08:31,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:31,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:31,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:31,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:31,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:31,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:08:31,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:31,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:31,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:31,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:31,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:31,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:31,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:31,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:31,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:31,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:08:31,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:31,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:31,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:31,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-25 11:08:31,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920032316] [2020-09-25 11:08:31,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:31,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:08:31,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141173543] [2020-09-25 11:08:31,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:08:31,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:31,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:08:31,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:08:31,182 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 9 states. [2020-09-25 11:08:31,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:31,385 INFO L93 Difference]: Finished difference Result 124 states and 167 transitions. [2020-09-25 11:08:31,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 11:08:31,385 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 11:08:31,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:31,387 INFO L225 Difference]: With dead ends: 124 [2020-09-25 11:08:31,387 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 11:08:31,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:08:31,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 11:08:31,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-09-25 11:08:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 11:08:31,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 94 transitions. [2020-09-25 11:08:31,400 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 94 transitions. Word has length 69 [2020-09-25 11:08:31,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:31,400 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 94 transitions. [2020-09-25 11:08:31,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:08:31,400 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 94 transitions. [2020-09-25 11:08:31,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 11:08:31,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:31,402 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:31,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:08:31,403 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:31,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:31,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1523115787, now seen corresponding path program 1 times [2020-09-25 11:08:31,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:31,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248736401] [2020-09-25 11:08:31,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:31,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:31,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:32,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:36,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 11:08:36,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:08:36,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 11:08:36,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:36,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:36,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:08:36,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:08:36,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:08:36,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:36,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:36,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:36,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:36,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:36,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:36,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:36,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:36,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:36,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:36,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:36,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:36,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:36,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:36,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:37,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:38,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:41,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:41,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 11:08:41,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 11:08:41,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:08:41,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:41,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:41,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:08:41,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:08:41,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 11:08:41,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:41,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:41,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:41,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:41,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:41,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:41,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:41,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:41,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:42,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 11:08:42,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:08:42,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-25 11:08:42,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:42,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:42,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:42,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:42,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:08:42,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:42,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:42,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:42,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:42,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:42,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 11:08:42,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:42,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:42,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:42,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:42,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:42,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:42,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:42,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:42,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:42,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:42,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:42,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:42,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:42,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:42,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:42,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:42,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:42,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:42,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:42,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:42,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:42,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:08:42,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:42,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:42,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:42,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:42,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:42,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:42,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:42,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:42,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:42,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:42,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:08:42,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:42,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:42,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:42,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:42,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:42,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:42,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 11:08:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:42,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:42,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 11:08:42,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:08:42,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-25 11:08:42,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:42,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:42,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:08:42,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:42,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:42,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:42,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:42,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:42,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:08:42,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:42,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:42,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:42,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:42,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:42,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:42,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:42,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:42,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:42,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:42,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:42,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:08:42,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:42,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:42,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:42,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:42,920 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 20 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 11:08:42,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248736401] [2020-09-25 11:08:42,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:42,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:08:42,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409024483] [2020-09-25 11:08:42,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:08:42,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:42,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:08:42,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:08:42,922 INFO L87 Difference]: Start difference. First operand 75 states and 94 transitions. Second operand 10 states. [2020-09-25 11:08:43,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:43,386 INFO L93 Difference]: Finished difference Result 205 states and 303 transitions. [2020-09-25 11:08:43,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 11:08:43,388 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-09-25 11:08:43,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:43,391 INFO L225 Difference]: With dead ends: 205 [2020-09-25 11:08:43,391 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 11:08:43,392 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:08:43,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 11:08:43,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 89. [2020-09-25 11:08:43,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-25 11:08:43,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 111 transitions. [2020-09-25 11:08:43,406 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 111 transitions. Word has length 85 [2020-09-25 11:08:43,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:43,406 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 111 transitions. [2020-09-25 11:08:43,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:08:43,407 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 111 transitions. [2020-09-25 11:08:43,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-09-25 11:08:43,408 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:43,408 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:43,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:08:43,409 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:43,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:43,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1957044445, now seen corresponding path program 1 times [2020-09-25 11:08:43,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:43,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478256380] [2020-09-25 11:08:43,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:43,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:43,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:43,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:43,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:43,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:43,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:43,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:44,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:44,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:44,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:44,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:45,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:46,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:46,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking...