/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-tiling/nr2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 18:26:10,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 18:26:10,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 18:26:10,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 18:26:10,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 18:26:10,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 18:26:10,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 18:26:10,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 18:26:10,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 18:26:10,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 18:26:10,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 18:26:10,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 18:26:10,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 18:26:10,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 18:26:10,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 18:26:10,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 18:26:10,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 18:26:10,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 18:26:10,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 18:26:10,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 18:26:10,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 18:26:10,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 18:26:10,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 18:26:10,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 18:26:10,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 18:26:10,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 18:26:10,602 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 18:26:10,603 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 18:26:10,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 18:26:10,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 18:26:10,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 18:26:10,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 18:26:10,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 18:26:10,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 18:26:10,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 18:26:10,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 18:26:10,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 18:26:10,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 18:26:10,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 18:26:10,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 18:26:10,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 18:26:10,624 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 18:26:10,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 18:26:10,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 18:26:10,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 18:26:10,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 18:26:10,668 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 18:26:10,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 18:26:10,668 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 18:26:10,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 18:26:10,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 18:26:10,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 18:26:10,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 18:26:10,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 18:26:10,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 18:26:10,671 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 18:26:10,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 18:26:10,671 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 18:26:10,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 18:26:10,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 18:26:10,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 18:26:10,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 18:26:10,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 18:26:10,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:26:10,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 18:26:10,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 18:26:10,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 18:26:10,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 18:26:10,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 18:26:10,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 18:26:10,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 18:26:10,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 18:26:10,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 18:26:11,011 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 18:26:11,014 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 18:26:11,016 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 18:26:11,016 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 18:26:11,017 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/nr2.c [2020-10-14 18:26:11,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8083d227/a71903327d7544cab98befb42fd5376c/FLAG457b38425 [2020-10-14 18:26:11,573 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 18:26:11,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/nr2.c [2020-10-14 18:26:11,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8083d227/a71903327d7544cab98befb42fd5376c/FLAG457b38425 [2020-10-14 18:26:11,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b8083d227/a71903327d7544cab98befb42fd5376c [2020-10-14 18:26:11,944 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 18:26:11,946 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 18:26:11,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 18:26:11,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 18:26:11,952 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 18:26:11,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:26:11" (1/1) ... [2020-10-14 18:26:11,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f8adeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:26:11, skipping insertion in model container [2020-10-14 18:26:11,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 06:26:11" (1/1) ... [2020-10-14 18:26:11,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 18:26:11,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 18:26:12,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:26:12,221 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 18:26:12,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 18:26:12,262 INFO L208 MainTranslator]: Completed translation [2020-10-14 18:26:12,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:26:12 WrapperNode [2020-10-14 18:26:12,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 18:26:12,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 18:26:12,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 18:26:12,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 18:26:12,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:26:12" (1/1) ... [2020-10-14 18:26:12,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:26:12" (1/1) ... [2020-10-14 18:26:12,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:26:12" (1/1) ... [2020-10-14 18:26:12,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:26:12" (1/1) ... [2020-10-14 18:26:12,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:26:12" (1/1) ... [2020-10-14 18:26:12,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:26:12" (1/1) ... [2020-10-14 18:26:12,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:26:12" (1/1) ... [2020-10-14 18:26:12,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 18:26:12,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 18:26:12,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 18:26:12,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 18:26:12,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:26:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 18:26:12,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 18:26:12,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 18:26:12,444 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 18:26:12,444 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 18:26:12,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 18:26:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 18:26:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 18:26:12,444 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 18:26:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 18:26:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 18:26:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 18:26:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 18:26:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 18:26:12,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 18:26:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 18:26:12,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 18:26:12,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 18:26:12,762 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 18:26:12,762 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 18:26:12,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:26:12 BoogieIcfgContainer [2020-10-14 18:26:12,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 18:26:12,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 18:26:12,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 18:26:12,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 18:26:12,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 06:26:11" (1/3) ... [2020-10-14 18:26:12,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa9a8af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:26:12, skipping insertion in model container [2020-10-14 18:26:12,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 06:26:12" (2/3) ... [2020-10-14 18:26:12,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fa9a8af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 06:26:12, skipping insertion in model container [2020-10-14 18:26:12,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 06:26:12" (3/3) ... [2020-10-14 18:26:12,792 INFO L109 eAbstractionObserver]: Analyzing ICFG nr2.c [2020-10-14 18:26:12,811 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 18:26:12,819 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 18:26:12,834 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 18:26:12,862 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 18:26:12,863 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 18:26:12,863 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 18:26:12,863 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 18:26:12,863 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 18:26:12,863 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 18:26:12,864 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 18:26:12,864 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 18:26:12,882 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-10-14 18:26:12,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 18:26:12,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:12,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:12,889 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:12,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:12,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1740462776, now seen corresponding path program 1 times [2020-10-14 18:26:12,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:12,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186856330] [2020-10-14 18:26:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:13,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:13,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:13,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:13,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:13,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 18:26:13,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:26:13,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-14 18:26:13,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:13,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:13,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:26:13,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 18:26:13,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:13,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 18:26:13,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:13,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:13,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:13,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:13,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:13,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:13,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 18:26:13,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:13,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:13,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:13,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:13,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:13,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:13,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:26:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:13,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:13,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:13,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:13,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:13,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:26:13,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 18:26:13,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:13,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:13,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:13,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:13,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:13,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:26:13,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186856330] [2020-10-14 18:26:13,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:26:13,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 18:26:13,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692430510] [2020-10-14 18:26:13,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:26:13,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:13,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:26:13,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:26:13,669 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2020-10-14 18:26:13,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:13,876 INFO L93 Difference]: Finished difference Result 69 states and 91 transitions. [2020-10-14 18:26:13,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:26:13,879 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-14 18:26:13,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:13,888 INFO L225 Difference]: With dead ends: 69 [2020-10-14 18:26:13,889 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 18:26:13,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:26:13,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 18:26:13,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-10-14 18:26:13,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 18:26:13,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2020-10-14 18:26:13,943 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 22 [2020-10-14 18:26:13,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:13,944 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2020-10-14 18:26:13,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:26:13,945 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2020-10-14 18:26:13,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 18:26:13,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:13,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:13,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 18:26:13,947 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:13,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:13,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1384584959, now seen corresponding path program 1 times [2020-10-14 18:26:13,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:13,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659449995] [2020-10-14 18:26:13,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:13,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:14,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:14,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:14,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:14,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 18:26:14,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:26:14,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 735 [2020-10-14 18:26:14,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:14,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:14,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:26:14,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:26:14,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 18:26:14,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:14,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:14,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:14,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:14,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:14,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:14,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 18:26:14,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:14,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:14,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:14,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:14,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:14,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:14,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:26:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:14,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:14,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:14,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:14,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:14,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 18:26:14,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:14,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:14,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:14,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:14,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:14,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:26:14,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659449995] [2020-10-14 18:26:14,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:26:14,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 18:26:14,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634341140] [2020-10-14 18:26:14,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:26:14,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:14,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:26:14,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:26:14,799 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 5 states. [2020-10-14 18:26:14,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:14,968 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2020-10-14 18:26:14,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:26:14,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-14 18:26:14,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:14,974 INFO L225 Difference]: With dead ends: 60 [2020-10-14 18:26:14,974 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 18:26:14,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 18:26:14,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 18:26:14,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2020-10-14 18:26:14,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-14 18:26:14,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-14 18:26:14,990 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 22 [2020-10-14 18:26:14,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:14,990 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-14 18:26:14,990 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:26:14,990 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-14 18:26:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 18:26:14,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:14,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:14,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 18:26:14,992 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:14,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:14,992 INFO L82 PathProgramCache]: Analyzing trace with hash -112997622, now seen corresponding path program 1 times [2020-10-14 18:26:14,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:14,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807253871] [2020-10-14 18:26:14,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:15,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:15,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:15,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-14 18:26:15,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:15,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 18:26:15,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:15,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 18:26:15,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 18:26:15,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:15,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:15,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:15,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:15,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:15,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:15,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:26:15,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:15,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:15,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:15,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:15,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:26:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:15,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:15,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:15,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:15,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:15,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:26:15,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:15,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:15,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:15,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:15,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:15,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:26:15,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807253871] [2020-10-14 18:26:15,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 18:26:15,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 18:26:15,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053836560] [2020-10-14 18:26:15,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 18:26:15,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:15,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 18:26:15,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:26:15,107 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-10-14 18:26:15,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:15,195 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2020-10-14 18:26:15,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 18:26:15,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-14 18:26:15,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:15,197 INFO L225 Difference]: With dead ends: 62 [2020-10-14 18:26:15,197 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 18:26:15,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 18:26:15,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 18:26:15,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-14 18:26:15,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 18:26:15,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-14 18:26:15,207 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 25 [2020-10-14 18:26:15,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:15,207 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-14 18:26:15,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 18:26:15,208 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-14 18:26:15,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 18:26:15,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:15,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:15,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 18:26:15,209 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:15,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:15,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1279331720, now seen corresponding path program 1 times [2020-10-14 18:26:15,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:15,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48750104] [2020-10-14 18:26:15,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:15,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:15,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:15,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:15,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:15,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 18:26:15,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:26:15,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-14 18:26:15,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:15,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:15,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:26:15,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:26:15,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 18:26:15,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:15,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:15,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:15,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:15,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:15,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:15,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:15,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:15,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:15,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:15,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:26:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:15,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:15,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:15,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:15,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:15,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:26:15,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:15,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:15,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:15,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:15,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:15,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:26:15,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48750104] [2020-10-14 18:26:15,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:15,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 18:26:15,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324907138] [2020-10-14 18:26:15,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 18:26:15,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:15,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 18:26:15,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:26:15,667 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 6 states. [2020-10-14 18:26:15,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:15,808 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-14 18:26:15,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-14 18:26:15,809 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-14 18:26:15,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:15,810 INFO L225 Difference]: With dead ends: 64 [2020-10-14 18:26:15,810 INFO L226 Difference]: Without dead ends: 41 [2020-10-14 18:26:15,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 18:26:15,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-14 18:26:15,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-14 18:26:15,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 18:26:15,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-14 18:26:15,819 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 28 [2020-10-14 18:26:15,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:15,819 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-14 18:26:15,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 18:26:15,820 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-14 18:26:15,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 18:26:15,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:15,821 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 18:26:15,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 18:26:15,821 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:15,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:15,822 INFO L82 PathProgramCache]: Analyzing trace with hash -994855160, now seen corresponding path program 1 times [2020-10-14 18:26:15,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:15,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002224145] [2020-10-14 18:26:15,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:15,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:15,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:15,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:16,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:16,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 18:26:16,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 18:26:16,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-10-14 18:26:16,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:16,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:26:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:26:16,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 18:26:16,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:16,547 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 30 [2020-10-14 18:26:16,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:16,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:16,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:16,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:16,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:16,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:26:16,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:16,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:16,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:16,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:16,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:16,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:16,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:26:16,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:16,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:16,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:16,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:16,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:16,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 18:26:16,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:16,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:16,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:16,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 18:26:16,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002224145] [2020-10-14 18:26:16,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:16,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:26:16,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557122017] [2020-10-14 18:26:16,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:26:16,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:16,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:26:16,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:26:16,735 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 10 states. [2020-10-14 18:26:17,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:17,901 INFO L93 Difference]: Finished difference Result 91 states and 110 transitions. [2020-10-14 18:26:17,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:26:17,903 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-14 18:26:17,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:17,905 INFO L225 Difference]: With dead ends: 91 [2020-10-14 18:26:17,906 INFO L226 Difference]: Without dead ends: 75 [2020-10-14 18:26:17,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:26:17,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-14 18:26:17,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 43. [2020-10-14 18:26:17,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-14 18:26:17,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-10-14 18:26:17,926 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 31 [2020-10-14 18:26:17,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:17,927 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-10-14 18:26:17,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:26:17,927 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-10-14 18:26:17,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 18:26:17,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:17,930 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, 1, 1, 1, 1, 1] [2020-10-14 18:26:17,930 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 18:26:17,930 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:17,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:17,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1324006069, now seen corresponding path program 1 times [2020-10-14 18:26:17,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:17,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844514081] [2020-10-14 18:26:17,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:17,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:18,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:18,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:18,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:18,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:19,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:20,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:20,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 18:26:20,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 18:26:20,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2095 [2020-10-14 18:26:20,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:20,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:20,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:26:20,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:26:20,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 18:26:20,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:20,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:20,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:20,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:20,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:20,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:20,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:20,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:20,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:20,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:20,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:20,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:20,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:20,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:26:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:20,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:20,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:20,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:20,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:20,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:26:20,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:20,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:20,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:20,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:20,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:20,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:20,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:26:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:20,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:20,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:20,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:20,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:20,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:26:20,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:20,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:20,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 18:26:20,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844514081] [2020-10-14 18:26:20,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:20,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:26:20,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379985958] [2020-10-14 18:26:20,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:26:20,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:20,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:26:20,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:26:20,274 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 12 states. [2020-10-14 18:26:20,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:20,833 INFO L93 Difference]: Finished difference Result 89 states and 108 transitions. [2020-10-14 18:26:20,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:26:20,834 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-14 18:26:20,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:20,838 INFO L225 Difference]: With dead ends: 89 [2020-10-14 18:26:20,838 INFO L226 Difference]: Without dead ends: 87 [2020-10-14 18:26:20,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:26:20,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-14 18:26:20,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 72. [2020-10-14 18:26:20,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-14 18:26:20,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2020-10-14 18:26:20,869 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 40 [2020-10-14 18:26:20,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:20,871 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2020-10-14 18:26:20,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:26:20,872 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2020-10-14 18:26:20,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 18:26:20,879 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:20,879 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:20,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 18:26:20,879 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:20,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:20,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1149798824, now seen corresponding path program 2 times [2020-10-14 18:26:20,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:20,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582597170] [2020-10-14 18:26:20,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:20,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:20,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:20,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:21,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:21,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:21,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:21,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:21,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:21,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:22,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:22,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:23,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:25,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:25,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 18:26:25,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 18:26:25,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:26:25,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:25,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 18:26:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 18:26:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-14 18:26:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:26,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:26,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:26,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:26,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:26,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:26,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:26,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:26,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:26,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:26,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:26,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:26,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:26,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:26:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:26,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:26,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:26,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:26,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:26,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:26:26,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 18:26:26,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:26,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:26,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:26,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:26,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-14 18:26:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:26,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:26,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:26,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:26,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:26,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:26,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:26,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:26,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:26,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:26,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:26,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:26,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:26:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:26,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:26,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:26,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:26,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:26,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:26,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:26,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:26,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:26,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:26,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:26,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:26,074 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 18:26:26,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582597170] [2020-10-14 18:26:26,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:26,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 18:26:26,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143964646] [2020-10-14 18:26:26,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 18:26:26,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:26,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 18:26:26,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-14 18:26:26,077 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 10 states. [2020-10-14 18:26:26,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:26,562 INFO L93 Difference]: Finished difference Result 134 states and 161 transitions. [2020-10-14 18:26:26,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:26:26,563 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 49 [2020-10-14 18:26:26,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:26,564 INFO L225 Difference]: With dead ends: 134 [2020-10-14 18:26:26,565 INFO L226 Difference]: Without dead ends: 97 [2020-10-14 18:26:26,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:26:26,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-14 18:26:26,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 74. [2020-10-14 18:26:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-14 18:26:26,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2020-10-14 18:26:26,580 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 49 [2020-10-14 18:26:26,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:26,581 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2020-10-14 18:26:26,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 18:26:26,581 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2020-10-14 18:26:26,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 18:26:26,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:26,582 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:26,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 18:26:26,582 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:26,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:26,583 INFO L82 PathProgramCache]: Analyzing trace with hash -970143106, now seen corresponding path program 3 times [2020-10-14 18:26:26,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:26,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858335649] [2020-10-14 18:26:26,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:26,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:26,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:26,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:26,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:26,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:26,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:26,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:26,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:27,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:27,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:27,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:27,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:27,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:28,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:28,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:29,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:29,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:29,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:29,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:29,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:29,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:30,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:30,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:31,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:31,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:31,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:31,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 18:26:31,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-14 18:26:31,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:26:31,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:31,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:31,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:26:31,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:26:31,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 18:26:31,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:31,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:31,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:31,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:31,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:31,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:31,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:31,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:31,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:31,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:31,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:31,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:31,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:31,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:26:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:31,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:31,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:31,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:31,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:31,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:31,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:31,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:31,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:31,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:26:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:31,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:31,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:31,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:31,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:31,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:31,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:31,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:31,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:31,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:31,869 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 18:26:31,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858335649] [2020-10-14 18:26:31,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:31,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:26:31,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357696226] [2020-10-14 18:26:31,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:26:31,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:31,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:26:31,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:26:31,873 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 13 states. [2020-10-14 18:26:32,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:32,926 INFO L93 Difference]: Finished difference Result 129 states and 158 transitions. [2020-10-14 18:26:32,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:26:32,927 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-10-14 18:26:32,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:32,929 INFO L225 Difference]: With dead ends: 129 [2020-10-14 18:26:32,929 INFO L226 Difference]: Without dead ends: 127 [2020-10-14 18:26:32,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:26:32,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-14 18:26:32,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 62. [2020-10-14 18:26:32,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-14 18:26:32,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2020-10-14 18:26:32,961 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 49 [2020-10-14 18:26:32,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:32,965 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2020-10-14 18:26:32,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:26:32,966 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2020-10-14 18:26:32,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 18:26:32,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:32,969 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2020-10-14 18:26:32,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 18:26:32,969 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:32,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:32,970 INFO L82 PathProgramCache]: Analyzing trace with hash -221172737, now seen corresponding path program 4 times [2020-10-14 18:26:32,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:32,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492425507] [2020-10-14 18:26:32,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:33,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:33,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:33,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:33,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:33,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:33,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:33,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:33,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:33,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:33,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:33,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:33,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:34,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:34,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:34,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:34,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:35,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:35,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:36,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:36,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:36,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:36,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:36,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:36,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:36,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:36,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:36,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:37,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:37,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:37,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:37,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 18:26:37,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-14 18:26:37,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:26:37,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:37,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 18:26:37,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:26:37,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 18:26:37,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:38,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:38,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:38,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:38,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:38,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:38,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:38,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:38,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:38,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:38,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:26:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:38,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:38,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:38,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:38,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:38,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:38,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:38,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:38,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:38,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:38,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:26:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:38,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:38,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:38,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:38,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:38,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:38,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:38,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:38,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:38,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:38,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:38,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:38,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:26:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:38,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:38,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:38,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:38,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:38,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:38,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:38,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:38,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:38,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:38,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:38,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-14 18:26:38,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492425507] [2020-10-14 18:26:38,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:38,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:26:38,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785515442] [2020-10-14 18:26:38,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:26:38,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:38,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:26:38,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:26:38,202 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand 12 states. [2020-10-14 18:26:38,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:38,737 INFO L93 Difference]: Finished difference Result 129 states and 158 transitions. [2020-10-14 18:26:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:26:38,738 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2020-10-14 18:26:38,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:38,739 INFO L225 Difference]: With dead ends: 129 [2020-10-14 18:26:38,739 INFO L226 Difference]: Without dead ends: 113 [2020-10-14 18:26:38,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:26:38,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-14 18:26:38,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 87. [2020-10-14 18:26:38,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 18:26:38,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2020-10-14 18:26:38,775 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 58 [2020-10-14 18:26:38,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:38,775 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2020-10-14 18:26:38,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:26:38,776 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2020-10-14 18:26:38,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 18:26:38,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:38,777 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:38,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 18:26:38,777 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:38,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:38,777 INFO L82 PathProgramCache]: Analyzing trace with hash -293559295, now seen corresponding path program 5 times [2020-10-14 18:26:38,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:38,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950741918] [2020-10-14 18:26:38,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:38,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:38,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:38,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:38,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:38,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:38,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:38,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:38,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:39,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:39,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:39,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:39,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:39,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:39,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:39,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:40,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:40,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:40,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:40,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:40,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:40,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:42,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:42,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:42,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:42,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:42,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:42,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:43,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:43,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 18:26:43,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-14 18:26:43,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 18:26:43,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:43,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:43,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:26:43,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:26:43,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 18:26:43,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:43,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:43,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:43,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:43,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:43,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:43,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:43,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:43,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:43,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:43,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:43,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:43,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:43,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:26:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:43,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:43,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:43,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:43,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:43,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:26:43,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:43,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:43,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:43,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:43,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:43,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:43,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:26:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:43,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:43,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:43,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:43,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:43,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:43,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:43,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:43,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:43,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:43,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:43,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:43,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:26:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:43,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:43,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:43,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:43,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:43,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:43,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:43,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:43,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 18:26:43,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 18:26:43,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:43,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:44,007 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-14 18:26:44,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950741918] [2020-10-14 18:26:44,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:44,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 18:26:44,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989283656] [2020-10-14 18:26:44,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 18:26:44,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:44,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 18:26:44,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 18:26:44,009 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand 12 states. [2020-10-14 18:26:44,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:44,444 INFO L93 Difference]: Finished difference Result 132 states and 163 transitions. [2020-10-14 18:26:44,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 18:26:44,445 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 58 [2020-10-14 18:26:44,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:44,446 INFO L225 Difference]: With dead ends: 132 [2020-10-14 18:26:44,446 INFO L226 Difference]: Without dead ends: 116 [2020-10-14 18:26:44,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:26:44,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-14 18:26:44,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 104. [2020-10-14 18:26:44,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-14 18:26:44,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2020-10-14 18:26:44,486 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 58 [2020-10-14 18:26:44,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:44,486 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2020-10-14 18:26:44,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 18:26:44,486 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2020-10-14 18:26:44,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 18:26:44,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:44,487 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:44,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 18:26:44,488 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:44,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:44,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1304676545, now seen corresponding path program 6 times [2020-10-14 18:26:44,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:44,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175425163] [2020-10-14 18:26:44,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:44,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:44,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:44,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:44,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:44,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:44,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:44,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:44,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:45,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:45,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 18:26:45,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:26:45,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 861 [2020-10-14 18:26:45,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:45,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:45,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:26:45,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:26:45,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 18:26:45,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:45,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:45,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:45,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:45,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:45,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:45,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:45,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:45,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:45,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:45,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:45,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:45,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:45,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:26:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:45,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:45,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:45,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:45,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:45,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:45,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:45,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:45,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:45,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:45,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:26:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:45,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:45,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:45,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:45,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:45,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:26:45,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:45,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:45,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:45,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:45,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:45,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 18:26:45,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:26:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:45,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:45,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:45,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:45,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:45,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:45,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:45,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:45,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:45,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:45,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:45,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 18:26:45,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175425163] [2020-10-14 18:26:45,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:45,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:26:45,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913878468] [2020-10-14 18:26:45,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:26:45,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:45,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:26:45,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:26:45,545 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand 13 states. [2020-10-14 18:26:46,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:46,202 INFO L93 Difference]: Finished difference Result 147 states and 183 transitions. [2020-10-14 18:26:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:26:46,202 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 58 [2020-10-14 18:26:46,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:46,204 INFO L225 Difference]: With dead ends: 147 [2020-10-14 18:26:46,204 INFO L226 Difference]: Without dead ends: 145 [2020-10-14 18:26:46,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:26:46,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-14 18:26:46,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 114. [2020-10-14 18:26:46,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-14 18:26:46,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 140 transitions. [2020-10-14 18:26:46,226 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 140 transitions. Word has length 58 [2020-10-14 18:26:46,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:46,226 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 140 transitions. [2020-10-14 18:26:46,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:26:46,226 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 140 transitions. [2020-10-14 18:26:46,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 18:26:46,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:46,227 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:46,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 18:26:46,228 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:46,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:46,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1518214627, now seen corresponding path program 7 times [2020-10-14 18:26:46,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:46,229 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440523189] [2020-10-14 18:26:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:46,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:46,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:46,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:46,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:46,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:46,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:46,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:46,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:46,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:46,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:46,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:46,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:46,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:46,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:46,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:46,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:47,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:47,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:47,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:47,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:47,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:47,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:48,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:48,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:48,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:48,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:48,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:48,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:48,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:48,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:48,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:48,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:48,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:48,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:49,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:49,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:49,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:50,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:50,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:50,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:51,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:51,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 18:26:51,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 40 [2020-10-14 18:26:51,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 18:26:51,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:51,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:51,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 18:26:51,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:26:51,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-14 18:26:51,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:51,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:51,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:51,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:51,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:51,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:51,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:51,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:51,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:51,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:51,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:51,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:51,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:51,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:26:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:51,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:51,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:51,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:51,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:51,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:26:51,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:51,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:51,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:51,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:26:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:51,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:51,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:51,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:51,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:51,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:51,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:51,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:51,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:51,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:51,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:51,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:51,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:26:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:51,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:51,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:51,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:51,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:51,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:51,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:51,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:51,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:51,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:26:51,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:51,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:51,498 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-14 18:26:51,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440523189] [2020-10-14 18:26:51,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:51,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:26:51,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572288743] [2020-10-14 18:26:51,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:26:51,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:51,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:26:51,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:26:51,501 INFO L87 Difference]: Start difference. First operand 114 states and 140 transitions. Second operand 14 states. [2020-10-14 18:26:52,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:52,037 INFO L93 Difference]: Finished difference Result 192 states and 240 transitions. [2020-10-14 18:26:52,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:26:52,038 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-10-14 18:26:52,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:52,039 INFO L225 Difference]: With dead ends: 192 [2020-10-14 18:26:52,039 INFO L226 Difference]: Without dead ends: 171 [2020-10-14 18:26:52,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:26:52,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-14 18:26:52,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 154. [2020-10-14 18:26:52,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-14 18:26:52,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 192 transitions. [2020-10-14 18:26:52,068 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 192 transitions. Word has length 61 [2020-10-14 18:26:52,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:52,069 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 192 transitions. [2020-10-14 18:26:52,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:26:52,069 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 192 transitions. [2020-10-14 18:26:52,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 18:26:52,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:52,070 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:26:52,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 18:26:52,070 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:52,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:52,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1765635419, now seen corresponding path program 8 times [2020-10-14 18:26:52,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:52,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967463225] [2020-10-14 18:26:52,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:52,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:52,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:53,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:53,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:53,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:53,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:53,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:54,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:54,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:54,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:54,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:54,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:54,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:54,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:54,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:54,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:54,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:54,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:54,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:54,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:54,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:54,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:55,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:55,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:55,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:55,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:55,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:55,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:56,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:56,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:56,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:57,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:57,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 18:26:57,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 42 [2020-10-14 18:26:57,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-14 18:26:57,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:57,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:26:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:26:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 18:26:57,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:57,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:26:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:57,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:57,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:57,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:26:57,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:57,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:26:57,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:57,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:26:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:26:57,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:57,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:26:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:57,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:57,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:57,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:57,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:57,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:26:57,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:57,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:57,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:57,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:57,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:57,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:57,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-14 18:26:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:57,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:57,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:57,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:57,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:57,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:26:57,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:57,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:57,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:57,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:57,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:57,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:26:57,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:26:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:57,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:57,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:26:57,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:26:57,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:26:57,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:26:57,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:26:57,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:26:57,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:26:57,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:26:57,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:26:57,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:26:57,332 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 47 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-14 18:26:57,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967463225] [2020-10-14 18:26:57,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:26:57,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:26:57,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241122458] [2020-10-14 18:26:57,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:26:57,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:26:57,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:26:57,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:26:57,334 INFO L87 Difference]: Start difference. First operand 154 states and 192 transitions. Second operand 13 states. [2020-10-14 18:26:58,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:26:58,319 INFO L93 Difference]: Finished difference Result 228 states and 287 transitions. [2020-10-14 18:26:58,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 18:26:58,321 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 61 [2020-10-14 18:26:58,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:26:58,324 INFO L225 Difference]: With dead ends: 228 [2020-10-14 18:26:58,324 INFO L226 Difference]: Without dead ends: 207 [2020-10-14 18:26:58,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=819, Unknown=0, NotChecked=0, Total=992 [2020-10-14 18:26:58,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-14 18:26:58,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 87. [2020-10-14 18:26:58,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 18:26:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 104 transitions. [2020-10-14 18:26:58,340 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 104 transitions. Word has length 61 [2020-10-14 18:26:58,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:26:58,341 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 104 transitions. [2020-10-14 18:26:58,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:26:58,341 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 104 transitions. [2020-10-14 18:26:58,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-14 18:26:58,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:26:58,341 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-14 18:26:58,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 18:26:58,342 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:26:58,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:26:58,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1072635424, now seen corresponding path program 9 times [2020-10-14 18:26:58,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:26:58,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123788461] [2020-10-14 18:26:58,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:26:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:26:58,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:58,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:58,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:58,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:58,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:58,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:59,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:59,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:59,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:59,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:59,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:26:59,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:00,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:00,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:00,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:00,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:00,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:00,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:00,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:00,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:00,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:00,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:00,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:00,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:01,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:01,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:01,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:01,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:01,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:01,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:01,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:01,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:01,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:01,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:02,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:02,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:02,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:02,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:03,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:03,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-14 18:27:03,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-14 18:27:03,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 18:27:03,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:03,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:03,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:27:03,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:27:03,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 18:27:03,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:03,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:03,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:03,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:03,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:03,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:03,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:03,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:03,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:03,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:03,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:03,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:27:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:03,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:03,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:03,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:03,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:03,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:03,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:03,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:03,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:03,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:03,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:03,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:03,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:27:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:03,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:03,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:03,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:03,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:03,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:03,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:03,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:03,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:03,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:27:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:03,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:03,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:03,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:03,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:03,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:03,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:03,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:03,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:03,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:03,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:03,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:03,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:27:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:03,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:03,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:03,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:03,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:03,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:03,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:03,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:03,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:03,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:03,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:03,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 6 proven. 49 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-14 18:27:03,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123788461] [2020-10-14 18:27:03,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:03,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:27:03,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785987486] [2020-10-14 18:27:03,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:27:03,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:03,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:27:03,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:27:03,554 INFO L87 Difference]: Start difference. First operand 87 states and 104 transitions. Second operand 15 states. [2020-10-14 18:27:04,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:04,335 INFO L93 Difference]: Finished difference Result 164 states and 205 transitions. [2020-10-14 18:27:04,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 18:27:04,336 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2020-10-14 18:27:04,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:04,338 INFO L225 Difference]: With dead ends: 164 [2020-10-14 18:27:04,338 INFO L226 Difference]: Without dead ends: 162 [2020-10-14 18:27:04,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2020-10-14 18:27:04,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-14 18:27:04,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 147. [2020-10-14 18:27:04,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-14 18:27:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 183 transitions. [2020-10-14 18:27:04,361 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 183 transitions. Word has length 67 [2020-10-14 18:27:04,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:04,361 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 183 transitions. [2020-10-14 18:27:04,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:27:04,362 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 183 transitions. [2020-10-14 18:27:04,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 18:27:04,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:04,363 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:04,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 18:27:04,364 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:04,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:04,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1183461731, now seen corresponding path program 10 times [2020-10-14 18:27:04,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:04,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887374097] [2020-10-14 18:27:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:04,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:04,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:04,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:04,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:04,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:04,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:04,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:05,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:05,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:05,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:05,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:05,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:05,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:05,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:05,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:05,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:06,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:06,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:06,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:06,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:06,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:06,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:06,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:06,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:06,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:06,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:06,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:07,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:07,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:07,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:07,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:08,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:08,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:08,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:08,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:08,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:08,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:08,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:08,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:08,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:08,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:08,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:08,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:08,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:08,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:09,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:09,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:09,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:09,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:09,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 18:27:09,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 48 [2020-10-14 18:27:09,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 18:27:09,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:09,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:09,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:27:09,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:27:09,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 18:27:09,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:09,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:09,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:09,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:09,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:09,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:09,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:09,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:09,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:09,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:09,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:09,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:09,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:09,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:27:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:09,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:09,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:09,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:09,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:09,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:27:09,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:09,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:09,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:09,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:09,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:27:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:09,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:09,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:09,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:09,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:09,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:09,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:09,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:09,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:09,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:09,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:27:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:09,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:09,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:09,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:09,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:09,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:09,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:09,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:09,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:09,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:09,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:27:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:09,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:09,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:09,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:09,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:09,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:09,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:09,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:09,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:09,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:09,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:09,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:09,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:27:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:09,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:09,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:09,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:09,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:09,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:09,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:09,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:09,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:09,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 46 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-14 18:27:09,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887374097] [2020-10-14 18:27:09,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:09,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:27:09,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601786251] [2020-10-14 18:27:09,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:27:09,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:09,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:27:09,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:27:09,577 INFO L87 Difference]: Start difference. First operand 147 states and 183 transitions. Second operand 13 states. [2020-10-14 18:27:10,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:10,208 INFO L93 Difference]: Finished difference Result 188 states and 234 transitions. [2020-10-14 18:27:10,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 18:27:10,208 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 76 [2020-10-14 18:27:10,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:10,210 INFO L225 Difference]: With dead ends: 188 [2020-10-14 18:27:10,210 INFO L226 Difference]: Without dead ends: 172 [2020-10-14 18:27:10,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:27:10,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-14 18:27:10,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 147. [2020-10-14 18:27:10,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-14 18:27:10,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 182 transitions. [2020-10-14 18:27:10,236 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 182 transitions. Word has length 76 [2020-10-14 18:27:10,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:10,236 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 182 transitions. [2020-10-14 18:27:10,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:27:10,236 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 182 transitions. [2020-10-14 18:27:10,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 18:27:10,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:10,238 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:10,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 18:27:10,238 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:10,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:10,238 INFO L82 PathProgramCache]: Analyzing trace with hash 2100388315, now seen corresponding path program 11 times [2020-10-14 18:27:10,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:10,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869130353] [2020-10-14 18:27:10,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:10,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:10,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:10,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:10,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 18:27:10,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:27:10,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-14 18:27:10,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:10,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:10,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 18:27:10,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 18:27:10,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 18:27:10,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:10,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:10,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:10,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:10,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:10,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:10,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:10,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:10,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:10,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:10,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:10,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:10,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:10,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:27:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:10,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:10,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:10,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:10,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:10,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:27:10,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 18:27:10,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:10,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:10,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:10,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:10,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 18:27:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:10,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:10,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:10,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:10,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:10,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:10,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:10,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:10,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:10,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:10,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:10,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:27:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:10,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:10,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:10,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:10,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:10,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:10,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:10,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:10,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:10,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:10,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:10,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:10,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:27:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:10,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:10,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:10,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:10,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:10,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:10,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:10,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:10,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:10,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:10,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:10,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:10,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:27:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:10,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:10,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:10,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:10,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:10,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:10,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:10,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:10,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:10,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:10,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:10,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 21 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-14 18:27:10,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869130353] [2020-10-14 18:27:10,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:10,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 18:27:10,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501057098] [2020-10-14 18:27:10,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 18:27:10,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:10,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 18:27:10,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-14 18:27:10,861 INFO L87 Difference]: Start difference. First operand 147 states and 182 transitions. Second operand 13 states. [2020-10-14 18:27:11,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:11,594 INFO L93 Difference]: Finished difference Result 223 states and 270 transitions. [2020-10-14 18:27:11,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 18:27:11,595 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 76 [2020-10-14 18:27:11,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:11,598 INFO L225 Difference]: With dead ends: 223 [2020-10-14 18:27:11,598 INFO L226 Difference]: Without dead ends: 164 [2020-10-14 18:27:11,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:27:11,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-14 18:27:11,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 140. [2020-10-14 18:27:11,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-14 18:27:11,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 171 transitions. [2020-10-14 18:27:11,647 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 171 transitions. Word has length 76 [2020-10-14 18:27:11,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:11,647 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 171 transitions. [2020-10-14 18:27:11,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 18:27:11,648 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 171 transitions. [2020-10-14 18:27:11,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-14 18:27:11,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:11,649 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 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, 1, 1] [2020-10-14 18:27:11,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 18:27:11,650 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:11,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:11,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1560643401, now seen corresponding path program 12 times [2020-10-14 18:27:11,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:11,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145600670] [2020-10-14 18:27:11,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:11,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:11,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:11,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:11,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:11,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:12,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:12,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:12,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:12,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:12,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:12,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:12,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:12,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:12,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:13,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:13,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:13,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:13,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:14,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:15,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:15,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:15,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:15,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:16,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:16,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:16,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-14 18:27:16,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 33 [2020-10-14 18:27:16,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 18:27:16,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:16,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:16,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:27:16,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:27:16,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 18:27:16,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:17,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:17,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:17,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:17,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:17,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:17,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:17,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:17,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:17,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:17,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:17,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:17,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:27:17,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:17,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:17,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:17,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:17,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:17,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 18:27:17,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:17,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:17,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:17,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:17,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:17,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-14 18:27:17,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:27:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:17,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:17,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:17,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:17,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:17,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:27:17,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:17,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:17,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:17,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 18:27:17,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:27:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:17,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:17,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:17,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:17,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:17,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:17,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:17,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:17,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:17,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:17,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:17,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 18:27:17,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:27:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:17,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:17,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:17,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:17,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:17,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:27:17,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:17,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:17,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:17,135 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 6 proven. 91 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-14 18:27:17,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145600670] [2020-10-14 18:27:17,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:17,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:27:17,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25948546] [2020-10-14 18:27:17,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:27:17,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:17,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:27:17,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:27:17,142 INFO L87 Difference]: Start difference. First operand 140 states and 171 transitions. Second operand 16 states. [2020-10-14 18:27:18,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:18,894 INFO L93 Difference]: Finished difference Result 236 states and 294 transitions. [2020-10-14 18:27:18,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-14 18:27:18,898 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2020-10-14 18:27:18,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:18,900 INFO L225 Difference]: With dead ends: 236 [2020-10-14 18:27:18,900 INFO L226 Difference]: Without dead ends: 234 [2020-10-14 18:27:18,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=204, Invalid=1128, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 18:27:18,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-10-14 18:27:18,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 145. [2020-10-14 18:27:18,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-14 18:27:18,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 178 transitions. [2020-10-14 18:27:18,932 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 178 transitions. Word has length 76 [2020-10-14 18:27:18,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:18,932 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 178 transitions. [2020-10-14 18:27:18,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:27:18,932 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 178 transitions. [2020-10-14 18:27:18,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 18:27:18,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:18,934 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:18,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 18:27:18,935 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:18,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:18,935 INFO L82 PathProgramCache]: Analyzing trace with hash 2078371302, now seen corresponding path program 13 times [2020-10-14 18:27:18,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:18,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112888091] [2020-10-14 18:27:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:18,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:18,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:19,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:20,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:20,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:20,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:20,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:20,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:20,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:20,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:20,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:20,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:20,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:20,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:20,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:20,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:20,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:21,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:21,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:21,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:21,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:21,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:21,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:21,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:22,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:22,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:22,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:22,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:22,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:22,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:22,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:22,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:22,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:23,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:23,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:23,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:23,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:23,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:23,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:23,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:23,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:23,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:23,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:23,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 18:27:23,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 53 [2020-10-14 18:27:23,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-14 18:27:23,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:23,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:23,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:27:23,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:27:23,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 18:27:23,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:24,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:24,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:24,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:24,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:24,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:24,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:24,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:24,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:24,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:24,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:24,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 18:27:24,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:27:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:24,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:24,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:24,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:24,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:24,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:24,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:24,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:24,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:24,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:24,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:27:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:24,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:24,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:24,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:24,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:24,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:27:24,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:24,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:24,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:24,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:24,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:24,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:27:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:24,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:24,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:24,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:24,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:24,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:27:24,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:24,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:24,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:24,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:24,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:27:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:24,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:24,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:24,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:24,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:24,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:27:24,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:24,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:24,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:24,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:24,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:24,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:24,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:27:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:24,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:24,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:24,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:24,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:24,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:24,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:24,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:24,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:24,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:24,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:24,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 34 proven. 82 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-10-14 18:27:24,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112888091] [2020-10-14 18:27:24,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:24,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 18:27:24,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580143266] [2020-10-14 18:27:24,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 18:27:24,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:24,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 18:27:24,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-14 18:27:24,319 INFO L87 Difference]: Start difference. First operand 145 states and 178 transitions. Second operand 14 states. [2020-10-14 18:27:25,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:25,603 INFO L93 Difference]: Finished difference Result 237 states and 296 transitions. [2020-10-14 18:27:25,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 18:27:25,604 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2020-10-14 18:27:25,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:25,606 INFO L225 Difference]: With dead ends: 237 [2020-10-14 18:27:25,606 INFO L226 Difference]: Without dead ends: 221 [2020-10-14 18:27:25,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=146, Invalid=666, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:27:25,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-14 18:27:25,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 116. [2020-10-14 18:27:25,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-14 18:27:25,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 140 transitions. [2020-10-14 18:27:25,629 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 140 transitions. Word has length 85 [2020-10-14 18:27:25,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:25,630 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 140 transitions. [2020-10-14 18:27:25,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 18:27:25,630 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 140 transitions. [2020-10-14 18:27:25,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 18:27:25,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:25,631 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:25,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 18:27:25,631 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:25,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:25,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1067254052, now seen corresponding path program 14 times [2020-10-14 18:27:25,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:25,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012327153] [2020-10-14 18:27:25,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:25,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:25,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:26,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:26,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:26,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:27,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:27,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:27,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:27,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:27,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:27,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:27,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:27,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:27,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:28,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:28,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:28,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:29,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:30,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:30,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 18:27:30,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-14 18:27:30,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 18:27:30,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:30,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:30,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 18:27:30,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:27:30,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 18:27:30,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:30,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:30,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:30,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:30,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:30,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:30,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:30,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:30,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:30,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:30,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:30,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:30,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:30,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:27:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:30,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:30,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:30,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:30,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:30,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:30,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:30,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:30,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:30,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:30,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:30,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:30,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:27:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:30,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:30,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:30,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:30,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:30,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:30,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:30,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:30,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:30,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:30,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:30,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:30,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:27:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:30,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:30,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:30,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:30,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:30,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:30,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:30,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:30,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:30,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:27:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:30,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:30,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:30,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:30,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:30,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:30,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:30,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:30,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:30,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:30,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:30,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:30,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:27:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:30,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:30,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:30,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:30,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:30,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:30,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:30,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:30,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:30,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:30,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:30,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:30,884 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 12 proven. 103 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-14 18:27:30,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012327153] [2020-10-14 18:27:30,885 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:30,885 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 18:27:30,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488598899] [2020-10-14 18:27:30,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 18:27:30,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:30,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 18:27:30,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-14 18:27:30,886 INFO L87 Difference]: Start difference. First operand 116 states and 140 transitions. Second operand 15 states. [2020-10-14 18:27:31,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:31,798 INFO L93 Difference]: Finished difference Result 246 states and 310 transitions. [2020-10-14 18:27:31,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 18:27:31,799 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 85 [2020-10-14 18:27:31,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:31,802 INFO L225 Difference]: With dead ends: 246 [2020-10-14 18:27:31,802 INFO L226 Difference]: Without dead ends: 230 [2020-10-14 18:27:31,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2020-10-14 18:27:31,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-14 18:27:31,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 173. [2020-10-14 18:27:31,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-14 18:27:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 215 transitions. [2020-10-14 18:27:31,830 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 215 transitions. Word has length 85 [2020-10-14 18:27:31,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:31,830 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 215 transitions. [2020-10-14 18:27:31,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 18:27:31,830 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 215 transitions. [2020-10-14 18:27:31,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-14 18:27:31,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:31,832 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:31,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 18:27:31,832 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:31,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:31,832 INFO L82 PathProgramCache]: Analyzing trace with hash -961332058, now seen corresponding path program 15 times [2020-10-14 18:27:31,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:31,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821586034] [2020-10-14 18:27:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:31,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:31,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:31,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:31,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:31,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:31,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:32,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:32,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:32,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:32,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:32,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:33,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:36,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:36,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 18:27:36,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 18:27:36,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:27:36,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:36,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 18:27:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:27:36,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 18:27:36,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:37,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:37,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:37,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:37,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:37,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:37,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:37,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:37,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:37,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:37,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:37,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:37,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:37,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:27:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:37,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:37,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:37,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:37,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:37,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:37,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:37,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:37,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:37,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:37,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:27:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:37,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:37,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:37,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:37,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:37,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:37,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:37,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:37,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:37,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:37,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:27:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:37,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:37,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:37,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:37,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:37,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:37,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:37,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:37,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:37,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:37,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:27:37,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:37,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:37,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:37,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:37,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:37,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:37,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:37,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:37,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:37,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:37,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:37,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:37,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:27:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:37,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:37,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:37,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:37,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:37,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:37,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:37,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:37,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:37,073 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 8 proven. 105 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-14 18:27:37,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821586034] [2020-10-14 18:27:37,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:37,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:27:37,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561345238] [2020-10-14 18:27:37,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:27:37,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:37,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:27:37,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:27:37,075 INFO L87 Difference]: Start difference. First operand 173 states and 215 transitions. Second operand 16 states. [2020-10-14 18:27:38,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:38,016 INFO L93 Difference]: Finished difference Result 269 states and 340 transitions. [2020-10-14 18:27:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 18:27:38,017 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 85 [2020-10-14 18:27:38,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:38,020 INFO L225 Difference]: With dead ends: 269 [2020-10-14 18:27:38,020 INFO L226 Difference]: Without dead ends: 267 [2020-10-14 18:27:38,021 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2020-10-14 18:27:38,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-14 18:27:38,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 210. [2020-10-14 18:27:38,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-10-14 18:27:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 261 transitions. [2020-10-14 18:27:38,055 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 261 transitions. Word has length 85 [2020-10-14 18:27:38,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:38,056 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 261 transitions. [2020-10-14 18:27:38,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:27:38,056 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 261 transitions. [2020-10-14 18:27:38,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-14 18:27:38,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:38,058 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:38,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 18:27:38,059 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:38,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:38,059 INFO L82 PathProgramCache]: Analyzing trace with hash 158678160, now seen corresponding path program 16 times [2020-10-14 18:27:38,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:38,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034720334] [2020-10-14 18:27:38,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:38,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:38,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:38,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:38,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:38,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:38,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:38,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:38,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:38,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:39,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:39,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:39,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:39,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:39,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:39,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:39,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:39,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:39,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:39,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:39,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:40,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:40,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:40,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:40,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:43,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:43,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 18:27:43,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-14 18:27:43,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-14 18:27:43,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:43,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:43,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 18:27:43,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:27:43,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 18:27:43,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:43,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:43,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:43,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:43,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:43,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:43,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:43,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:43,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:43,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:43,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:43,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:27:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:43,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:43,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:43,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:43,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:43,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:43,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:43,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:43,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:43,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:43,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:43,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:43,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-14 18:27:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:43,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:43,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:43,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:43,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:43,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:43,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:43,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:43,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:43,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:43,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-14 18:27:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:43,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:43,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:43,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:43,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:43,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:43,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:43,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:43,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:43,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:43,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-14 18:27:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:43,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:43,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:43,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:43,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:43,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:43,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:43,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:43,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:43,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:43,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-14 18:27:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:43,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:43,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:43,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:43,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:43,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:43,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:43,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:43,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 56 proven. 10 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2020-10-14 18:27:43,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034720334] [2020-10-14 18:27:43,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:43,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 18:27:43,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923713899] [2020-10-14 18:27:43,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 18:27:43,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:43,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 18:27:43,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 18:27:43,140 INFO L87 Difference]: Start difference. First operand 210 states and 261 transitions. Second operand 5 states. [2020-10-14 18:27:43,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:43,238 INFO L93 Difference]: Finished difference Result 313 states and 389 transitions. [2020-10-14 18:27:43,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 18:27:43,238 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-14 18:27:43,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:43,240 INFO L225 Difference]: With dead ends: 313 [2020-10-14 18:27:43,240 INFO L226 Difference]: Without dead ends: 120 [2020-10-14 18:27:43,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 18:27:43,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-14 18:27:43,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2020-10-14 18:27:43,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-14 18:27:43,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2020-10-14 18:27:43,263 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 88 [2020-10-14 18:27:43,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:43,263 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2020-10-14 18:27:43,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 18:27:43,264 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2020-10-14 18:27:43,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-14 18:27:43,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:43,265 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:43,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 18:27:43,265 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:43,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:43,266 INFO L82 PathProgramCache]: Analyzing trace with hash -52621287, now seen corresponding path program 17 times [2020-10-14 18:27:43,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:43,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599894067] [2020-10-14 18:27:43,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:43,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:43,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:43,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:43,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:43,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:43,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:43,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:43,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:48,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:48,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 18:27:48,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 18:27:48,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-14 18:27:48,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:48,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:27:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:27:48,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 18:27:48,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:48,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:48,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:48,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:48,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:48,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:48,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:48,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:48,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:48,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:48,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:48,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:48,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:48,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:27:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:48,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:48,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:48,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:48,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:48,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:48,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:48,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:48,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:48,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:48,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:48,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:48,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:27:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:48,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:48,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:48,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:48,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:48,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:48,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:48,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:48,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:48,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:48,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:27:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:48,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:48,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:48,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:48,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:48,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:48,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:48,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:48,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:48,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:48,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:27:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:48,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:48,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:48,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:48,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:48,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:48,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:48,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:48,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:48,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:48,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:48,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:48,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:27:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:48,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:48,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:48,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:48,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:48,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:48,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:48,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:48,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:48,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:48,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:48,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:48,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:27:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:48,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:48,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:48,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:48,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:48,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:48,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:48,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:48,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:48,566 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 10 proven. 129 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-14 18:27:48,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599894067] [2020-10-14 18:27:48,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:48,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:27:48,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039938753] [2020-10-14 18:27:48,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:27:48,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:48,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:27:48,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:27:48,568 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand 18 states. [2020-10-14 18:27:49,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:49,730 INFO L93 Difference]: Finished difference Result 197 states and 238 transitions. [2020-10-14 18:27:49,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 18:27:49,732 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 94 [2020-10-14 18:27:49,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:49,733 INFO L225 Difference]: With dead ends: 197 [2020-10-14 18:27:49,733 INFO L226 Difference]: Without dead ends: 195 [2020-10-14 18:27:49,735 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=1234, Unknown=0, NotChecked=0, Total=1406 [2020-10-14 18:27:49,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-14 18:27:49,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 177. [2020-10-14 18:27:49,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-14 18:27:49,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 213 transitions. [2020-10-14 18:27:49,762 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 213 transitions. Word has length 94 [2020-10-14 18:27:49,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:49,763 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 213 transitions. [2020-10-14 18:27:49,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:27:49,763 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 213 transitions. [2020-10-14 18:27:49,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 18:27:49,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:49,764 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:49,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 18:27:49,765 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:49,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:49,765 INFO L82 PathProgramCache]: Analyzing trace with hash -166329148, now seen corresponding path program 18 times [2020-10-14 18:27:49,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:49,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527357766] [2020-10-14 18:27:49,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:49,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:49,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:49,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:49,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:49,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:49,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:49,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:49,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:50,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:50,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:50,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:50,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:50,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:50,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:50,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:50,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:50,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:51,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:53,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:53,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:53,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:53,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:54,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:54,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:54,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:54,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:54,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 18:27:54,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-14 18:27:54,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 18:27:54,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:54,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:54,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:27:54,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:27:54,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 18:27:54,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:55,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:55,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:55,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:55,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:55,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:55,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:55,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:55,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:55,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:55,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:55,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:55,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:27:55,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:27:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:55,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:55,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:55,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:55,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:55,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:55,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:55,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:55,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:55,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:27:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:55,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:55,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:55,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:55,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:55,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:55,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:55,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:55,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:55,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:55,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:55,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:55,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:27:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:55,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:55,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:55,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:55,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:55,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:55,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:55,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:55,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:55,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:55,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:55,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:55,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:27:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:55,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:55,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:55,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:55,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:55,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:55,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:55,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:55,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:55,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:55,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:27:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:55,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:55,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:55,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:55,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:55,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:55,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:55,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:55,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:55,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:27:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:55,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:55,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:55,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:55,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:55,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:55,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:55,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:55,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:55,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:55,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:27:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:55,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:55,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:55,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:55,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:27:55,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:55,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:55,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:27:55,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:55,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:55,098 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 44 proven. 125 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-14 18:27:55,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527357766] [2020-10-14 18:27:55,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:55,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:27:55,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809030345] [2020-10-14 18:27:55,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:27:55,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:55,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:27:55,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:27:55,100 INFO L87 Difference]: Start difference. First operand 177 states and 213 transitions. Second operand 16 states. [2020-10-14 18:27:56,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:56,145 INFO L93 Difference]: Finished difference Result 251 states and 305 transitions. [2020-10-14 18:27:56,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 18:27:56,146 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 103 [2020-10-14 18:27:56,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:56,148 INFO L225 Difference]: With dead ends: 251 [2020-10-14 18:27:56,148 INFO L226 Difference]: Without dead ends: 235 [2020-10-14 18:27:56,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:27:56,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-14 18:27:56,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 219. [2020-10-14 18:27:56,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-14 18:27:56,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 267 transitions. [2020-10-14 18:27:56,198 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 267 transitions. Word has length 103 [2020-10-14 18:27:56,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:56,199 INFO L479 AbstractCegarLoop]: Abstraction has 219 states and 267 transitions. [2020-10-14 18:27:56,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:27:56,199 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 267 transitions. [2020-10-14 18:27:56,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 18:27:56,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:56,202 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:56,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 18:27:56,202 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:56,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:56,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1177446398, now seen corresponding path program 19 times [2020-10-14 18:27:56,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:56,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159663006] [2020-10-14 18:27:56,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:56,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:56,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:56,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:56,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 18:27:56,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:27:56,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 556 [2020-10-14 18:27:56,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:56,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:56,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 18:27:56,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 18:27:56,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 18:27:56,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:57,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:27:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:57,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:57,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:57,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:27:57,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:57,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:57,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:57,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:27:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:57,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:27:57,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:57,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:27:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:57,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:57,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:57,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:57,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:57,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:27:57,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:27:57,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:57,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:57,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:57,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:57,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-14 18:27:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:57,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:57,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:57,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:57,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:57,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:27:57,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:57,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:57,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:57,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:57,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:57,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:57,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:27:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:57,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:57,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:57,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:57,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:57,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:57,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:57,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:57,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:57,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:57,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:57,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:57,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:27:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:57,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:57,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:57,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:57,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:57,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:57,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:57,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:57,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:57,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:27:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:57,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:57,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:57,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:57,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:57,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:57,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:57,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:57,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:57,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:57,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:57,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:57,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:27:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:57,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:57,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:57,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:57,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:57,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:27:57,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:57,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:57,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:57,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:57,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:57,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:57,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:27:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:57,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:57,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:27:57,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:27:57,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:27:57,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:27:57,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:27:57,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:27:57,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:27:57,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:27:57,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:27:57,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:27:57,299 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 63 proven. 102 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 18:27:57,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159663006] [2020-10-14 18:27:57,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:27:57,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 18:27:57,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002122961] [2020-10-14 18:27:57,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 18:27:57,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:27:57,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 18:27:57,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-14 18:27:57,301 INFO L87 Difference]: Start difference. First operand 219 states and 267 transitions. Second operand 16 states. [2020-10-14 18:27:58,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:27:58,433 INFO L93 Difference]: Finished difference Result 268 states and 320 transitions. [2020-10-14 18:27:58,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 18:27:58,434 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 103 [2020-10-14 18:27:58,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:27:58,435 INFO L225 Difference]: With dead ends: 268 [2020-10-14 18:27:58,435 INFO L226 Difference]: Without dead ends: 165 [2020-10-14 18:27:58,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2020-10-14 18:27:58,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-14 18:27:58,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 135. [2020-10-14 18:27:58,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-14 18:27:58,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 160 transitions. [2020-10-14 18:27:58,464 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 160 transitions. Word has length 103 [2020-10-14 18:27:58,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:27:58,464 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 160 transitions. [2020-10-14 18:27:58,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 18:27:58,464 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 160 transitions. [2020-10-14 18:27:58,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 18:27:58,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:27:58,466 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:27:58,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 18:27:58,466 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:27:58,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:27:58,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1831547102, now seen corresponding path program 20 times [2020-10-14 18:27:58,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:27:58,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836380760] [2020-10-14 18:27:58,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:27:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:27:58,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:58,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:58,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:58,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:58,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:58,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:58,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:58,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:58,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:58,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:58,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:58,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:59,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:59,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:59,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:59,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:59,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:27:59,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:00,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:00,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:01,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:01,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:01,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:03,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:03,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-14 18:28:03,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-14 18:28:03,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 18:28:03,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:03,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 18:28:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:28:03,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 18:28:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:03,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:28:03,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:03,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:03,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:03,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:28:03,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:03,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:03,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:03,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:03,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:03,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:03,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:03,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:03,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:28:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:03,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:03,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:03,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:03,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:03,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:03,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:03,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:03,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:03,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:28:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:03,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:03,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:03,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:03,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:03,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:03,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:03,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:03,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:03,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:03,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:03,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:03,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:28:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:03,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:03,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:03,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:03,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:03,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:03,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:03,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:03,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:03,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:03,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:28:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:03,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:03,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:03,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:03,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:03,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:03,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:03,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:03,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:03,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:28:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:03,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:03,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:03,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:03,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:03,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:03,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:03,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:03,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:03,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:03,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:03,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:03,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:28:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:03,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:03,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:03,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:03,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:03,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:03,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:03,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:03,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:03,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:03,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:03,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 10 proven. 190 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-14 18:28:03,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836380760] [2020-10-14 18:28:03,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:28:03,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:28:03,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613123851] [2020-10-14 18:28:03,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:28:03,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:28:03,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:28:03,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:28:03,904 INFO L87 Difference]: Start difference. First operand 135 states and 160 transitions. Second operand 19 states. [2020-10-14 18:28:06,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:28:06,345 INFO L93 Difference]: Finished difference Result 206 states and 249 transitions. [2020-10-14 18:28:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 18:28:06,346 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 103 [2020-10-14 18:28:06,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:28:06,347 INFO L225 Difference]: With dead ends: 206 [2020-10-14 18:28:06,347 INFO L226 Difference]: Without dead ends: 204 [2020-10-14 18:28:06,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=249, Invalid=1731, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 18:28:06,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-14 18:28:06,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 145. [2020-10-14 18:28:06,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-14 18:28:06,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 172 transitions. [2020-10-14 18:28:06,370 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 172 transitions. Word has length 103 [2020-10-14 18:28:06,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:28:06,370 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 172 transitions. [2020-10-14 18:28:06,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:28:06,370 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 172 transitions. [2020-10-14 18:28:06,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 18:28:06,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:28:06,372 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:28:06,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 18:28:06,372 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:28:06,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:28:06,373 INFO L82 PathProgramCache]: Analyzing trace with hash -2013650981, now seen corresponding path program 21 times [2020-10-14 18:28:06,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:28:06,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710397274] [2020-10-14 18:28:06,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:28:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:06,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:06,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:07,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:07,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:07,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:07,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:07,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:07,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:08,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:11,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:11,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 18:28:11,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-14 18:28:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 18:28:11,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:11,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:28:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:28:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-14 18:28:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:11,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:28:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:11,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:11,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:11,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:28:11,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:11,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:11,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:11,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:11,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:11,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:11,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:11,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:28:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:11,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:11,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:11,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:11,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:11,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:11,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:11,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:11,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:11,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:11,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:11,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:11,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:28:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:11,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:11,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:11,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:11,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:11,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:11,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:11,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:11,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:11,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:11,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:11,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:11,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:28:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:11,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:11,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:11,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:11,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:11,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:11,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:11,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:11,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:11,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:11,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:11,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:28:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:11,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:11,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:11,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:11,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:11,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:11,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:11,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:11,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:11,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:11,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:11,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:11,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:28:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:11,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:11,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:11,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:11,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:11,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:11,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:11,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:11,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:11,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:11,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:11,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:28:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:11,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:11,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:11,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:11,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:11,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:11,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:11,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:11,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:11,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:11,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:11,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:28:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:11,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:11,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:11,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:11,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:11,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:11,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:11,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:11,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:11,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:11,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:11,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 46 proven. 184 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 18:28:11,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710397274] [2020-10-14 18:28:11,841 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:28:11,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:28:11,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187882783] [2020-10-14 18:28:11,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:28:11,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:28:11,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:28:11,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:28:11,842 INFO L87 Difference]: Start difference. First operand 145 states and 172 transitions. Second operand 19 states. [2020-10-14 18:28:13,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:28:13,234 INFO L93 Difference]: Finished difference Result 219 states and 265 transitions. [2020-10-14 18:28:13,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 18:28:13,235 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 112 [2020-10-14 18:28:13,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:28:13,237 INFO L225 Difference]: With dead ends: 219 [2020-10-14 18:28:13,237 INFO L226 Difference]: Without dead ends: 203 [2020-10-14 18:28:13,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 18:28:13,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-14 18:28:13,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 184. [2020-10-14 18:28:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-10-14 18:28:13,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 222 transitions. [2020-10-14 18:28:13,285 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 222 transitions. Word has length 112 [2020-10-14 18:28:13,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:28:13,286 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 222 transitions. [2020-10-14 18:28:13,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:28:13,286 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 222 transitions. [2020-10-14 18:28:13,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-14 18:28:13,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:28:13,288 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:28:13,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 18:28:13,288 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:28:13,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:28:13,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1270199065, now seen corresponding path program 22 times [2020-10-14 18:28:13,289 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:28:13,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917181501] [2020-10-14 18:28:13,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:28:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:13,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:13,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:13,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:13,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:13,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:13,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:13,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:13,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:13,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:13,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:13,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:13,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:14,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:14,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:14,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:14,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:15,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:15,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:15,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:15,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:15,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:15,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:18,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:18,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-14 18:28:18,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 18:28:18,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 18:28:18,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:18,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:18,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 18:28:18,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:28:18,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 18:28:18,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:18,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:28:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:18,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:18,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:18,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:28:18,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:18,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:18,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:18,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:18,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:18,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:18,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:18,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:18,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:28:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:18,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:18,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:18,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:18,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:18,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:18,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:18,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:18,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:18,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:18,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:18,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:18,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:28:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:18,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:18,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:18,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:18,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:18,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:18,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:18,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:18,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:18,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:18,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:18,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:18,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:28:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:18,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:18,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:18,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:18,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:18,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:18,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:18,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:18,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:18,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:18,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:18,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:18,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:28:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:18,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:18,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:18,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:18,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:18,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:18,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:18,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:18,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:18,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:18,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:18,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:18,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:28:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:18,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:18,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:18,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:18,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:18,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:18,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:18,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:18,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:18,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:18,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:18,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:18,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:28:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:18,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:18,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:18,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:18,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:18,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:18,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:18,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:18,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:18,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:28:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:18,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:18,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:18,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:18,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:18,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:18,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:18,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:18,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:18,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:18,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:18,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 18 proven. 210 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 18:28:18,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917181501] [2020-10-14 18:28:18,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:28:18,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 18:28:18,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884748792] [2020-10-14 18:28:18,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 18:28:18,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:28:18,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 18:28:18,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2020-10-14 18:28:18,703 INFO L87 Difference]: Start difference. First operand 184 states and 222 transitions. Second operand 18 states. [2020-10-14 18:28:20,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:28:20,083 INFO L93 Difference]: Finished difference Result 259 states and 315 transitions. [2020-10-14 18:28:20,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 18:28:20,083 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 112 [2020-10-14 18:28:20,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:28:20,085 INFO L225 Difference]: With dead ends: 259 [2020-10-14 18:28:20,085 INFO L226 Difference]: Without dead ends: 243 [2020-10-14 18:28:20,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 18:28:20,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-14 18:28:20,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 189. [2020-10-14 18:28:20,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-10-14 18:28:20,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 228 transitions. [2020-10-14 18:28:20,128 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 228 transitions. Word has length 112 [2020-10-14 18:28:20,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:28:20,129 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 228 transitions. [2020-10-14 18:28:20,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 18:28:20,129 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 228 transitions. [2020-10-14 18:28:20,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 18:28:20,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:28:20,132 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:28:20,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 18:28:20,132 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:28:20,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:28:20,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1656438332, now seen corresponding path program 23 times [2020-10-14 18:28:20,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:28:20,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278285642] [2020-10-14 18:28:20,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:28:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:20,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:20,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:21,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:21,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:21,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:21,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:21,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:22,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:22,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:25,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:25,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 18:28:25,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-14 18:28:25,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 18:28:25,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:25,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:25,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:28:25,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:28:25,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 18:28:25,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:25,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:28:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:25,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:25,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:25,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:28:25,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:25,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:25,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:25,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:25,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:25,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:25,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:25,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:25,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:28:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:25,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:25,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:25,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:25,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:25,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:28:25,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:25,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:25,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:25,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:25,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:25,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:25,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:28:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:25,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:25,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:25,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:25,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:25,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:25,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:25,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:25,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:25,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:25,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:25,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:25,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:28:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:25,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:25,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:25,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:25,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:25,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:25,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:25,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:25,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:25,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:25,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:28:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:25,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:25,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:25,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:25,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:25,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:25,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:25,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:25,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:25,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:25,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:25,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:25,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:28:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:25,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:25,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:25,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:25,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:25,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:25,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:25,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:25,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:25,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:28:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:25,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:25,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:25,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:25,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:25,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:25,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:25,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:25,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:25,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:25,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:25,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:25,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:28:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:25,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:25,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:25,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:25,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:25,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:25,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:25,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:25,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:25,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:25,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:25,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:25,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 18:28:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:25,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:25,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:25,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:25,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:25,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:28:25,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:25,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:25,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:25,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:25,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 14 proven. 248 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-14 18:28:25,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278285642] [2020-10-14 18:28:25,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:28:25,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:28:25,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691891734] [2020-10-14 18:28:25,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:28:25,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:28:25,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:28:25,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:28:25,704 INFO L87 Difference]: Start difference. First operand 189 states and 228 transitions. Second operand 21 states. [2020-10-14 18:28:27,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:28:27,436 INFO L93 Difference]: Finished difference Result 324 states and 399 transitions. [2020-10-14 18:28:27,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 18:28:27,437 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 121 [2020-10-14 18:28:27,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:28:27,439 INFO L225 Difference]: With dead ends: 324 [2020-10-14 18:28:27,439 INFO L226 Difference]: Without dead ends: 322 [2020-10-14 18:28:27,441 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=211, Invalid=1769, Unknown=0, NotChecked=0, Total=1980 [2020-10-14 18:28:27,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-14 18:28:27,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 298. [2020-10-14 18:28:27,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-10-14 18:28:27,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 368 transitions. [2020-10-14 18:28:27,513 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 368 transitions. Word has length 121 [2020-10-14 18:28:27,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:28:27,514 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 368 transitions. [2020-10-14 18:28:27,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:28:27,514 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 368 transitions. [2020-10-14 18:28:27,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 18:28:27,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:28:27,518 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:28:27,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 18:28:27,518 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:28:27,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:28:27,518 INFO L82 PathProgramCache]: Analyzing trace with hash -841743495, now seen corresponding path program 24 times [2020-10-14 18:28:27,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:28:27,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260214777] [2020-10-14 18:28:27,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:28:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:27,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:27,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:29,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:32,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:32,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 18:28:32,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-14 18:28:32,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 18:28:32,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:32,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 18:28:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 18:28:32,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-14 18:28:32,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:32,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:28:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:32,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:32,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:32,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:28:32,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:32,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:32,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:32,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:32,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:32,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:32,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:32,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:32,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:28:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:32,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:32,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:32,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:32,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:32,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:28:32,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 18:28:32,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:32,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:32,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:32,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-14 18:28:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:32,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:32,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:32,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:32,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:32,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:32,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:32,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:32,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:32,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:32,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:32,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:32,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:28:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:32,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:32,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:32,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:32,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:32,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:32,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:32,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:32,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:32,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:32,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:32,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:32,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:28:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:32,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:32,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:32,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:32,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:32,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:32,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:32,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:32,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:32,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:32,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:32,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:32,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:28:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:32,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:32,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:32,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:32,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:32,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:32,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:32,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:32,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:32,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:32,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:32,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:32,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:28:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:32,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:32,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:32,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:32,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:32,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:32,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:32,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:32,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:32,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:32,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:32,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:32,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:28:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:32,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:32,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:32,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:32,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 18:28:32,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:32,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:32,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:32,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:32,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:32,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:32,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 18:28:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:32,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:32,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:32,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:32,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:32,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:32,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:32,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:32,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:32,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:32,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:32,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 18:28:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:32,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:32,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:32,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:32,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:32,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:32,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:32,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:32,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:32,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:33,018 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 180 proven. 118 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-14 18:28:33,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260214777] [2020-10-14 18:28:33,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:28:33,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 18:28:33,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545050907] [2020-10-14 18:28:33,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 18:28:33,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:28:33,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 18:28:33,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-14 18:28:33,022 INFO L87 Difference]: Start difference. First operand 298 states and 368 transitions. Second operand 19 states. [2020-10-14 18:28:33,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:28:33,989 INFO L93 Difference]: Finished difference Result 360 states and 436 transitions. [2020-10-14 18:28:33,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 18:28:33,989 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 130 [2020-10-14 18:28:33,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:28:33,992 INFO L225 Difference]: With dead ends: 360 [2020-10-14 18:28:33,992 INFO L226 Difference]: Without dead ends: 242 [2020-10-14 18:28:33,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=277, Invalid=1055, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 18:28:33,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-14 18:28:34,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 216. [2020-10-14 18:28:34,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-14 18:28:34,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 263 transitions. [2020-10-14 18:28:34,026 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 263 transitions. Word has length 130 [2020-10-14 18:28:34,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:28:34,027 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 263 transitions. [2020-10-14 18:28:34,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 18:28:34,027 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 263 transitions. [2020-10-14 18:28:34,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 18:28:34,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:28:34,029 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 8, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:28:34,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 18:28:34,029 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:28:34,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:28:34,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1892082971, now seen corresponding path program 25 times [2020-10-14 18:28:34,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:28:34,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583814421] [2020-10-14 18:28:34,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:28:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:34,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:34,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:34,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:34,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:34,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:34,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:34,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:34,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:34,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:34,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:34,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:34,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:34,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:34,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:34,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:34,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:34,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:34,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:34,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:35,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:35,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:35,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:36,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:36,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:39,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:39,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 18:28:39,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-14 18:28:39,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 18:28:39,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:39,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:39,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 18:28:39,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:28:39,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 18:28:39,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:39,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:28:39,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:39,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:39,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:39,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:28:39,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:39,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:39,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:39,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:39,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:39,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:39,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:39,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:28:39,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:39,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:39,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:39,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:39,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:39,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:39,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:39,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:39,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:39,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:39,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:28:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:39,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:39,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:39,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:39,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:39,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:39,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:39,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:39,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:39,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:39,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:39,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:39,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:28:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:39,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:39,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:39,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:39,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:39,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:39,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:39,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:39,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:39,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:39,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:39,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:39,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:28:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:39,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:39,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:39,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:39,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:39,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:39,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:39,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:39,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:39,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:39,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:39,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:39,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:28:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:39,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:39,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:39,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:39,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:39,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:39,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:39,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:39,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:39,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:28:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:39,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:39,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:39,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:39,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:39,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:39,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:39,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:39,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:39,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:39,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:39,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:39,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 18:28:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:39,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:39,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:39,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:39,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:39,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:39,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:39,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:39,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:39,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:39,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 18:28:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:39,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:39,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:39,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:39,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:39,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:39,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:39,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:39,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:39,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:39,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:39,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:39,808 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 14 proven. 328 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-10-14 18:28:39,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583814421] [2020-10-14 18:28:39,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:28:39,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:28:39,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859554921] [2020-10-14 18:28:39,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:28:39,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:28:39,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:28:39,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:28:39,818 INFO L87 Difference]: Start difference. First operand 216 states and 263 transitions. Second operand 22 states. [2020-10-14 18:28:43,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:28:43,369 INFO L93 Difference]: Finished difference Result 321 states and 395 transitions. [2020-10-14 18:28:43,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-14 18:28:43,370 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 130 [2020-10-14 18:28:43,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:28:43,373 INFO L225 Difference]: With dead ends: 321 [2020-10-14 18:28:43,373 INFO L226 Difference]: Without dead ends: 319 [2020-10-14 18:28:43,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=313, Invalid=2657, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 18:28:43,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-14 18:28:43,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 226. [2020-10-14 18:28:43,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-14 18:28:43,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 275 transitions. [2020-10-14 18:28:43,421 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 275 transitions. Word has length 130 [2020-10-14 18:28:43,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:28:43,421 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 275 transitions. [2020-10-14 18:28:43,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:28:43,422 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 275 transitions. [2020-10-14 18:28:43,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 18:28:43,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:28:43,423 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:28:43,423 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 18:28:43,423 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:28:43,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:28:43,424 INFO L82 PathProgramCache]: Analyzing trace with hash -604065278, now seen corresponding path program 26 times [2020-10-14 18:28:43,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:28:43,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738464804] [2020-10-14 18:28:43,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:28:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:43,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:43,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:44,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:44,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:44,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:44,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:44,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:44,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:44,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:44,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:44,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:44,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:44,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:44,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:44,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:44,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:44,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:44,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:44,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:44,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:45,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:48,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:48,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 18:28:48,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-14 18:28:48,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 18:28:48,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:48,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:28:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:28:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-14 18:28:48,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:48,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:28:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:48,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:48,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:48,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:28:48,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:48,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:48,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:48,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:48,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:48,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:48,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:48,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:48,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:28:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:48,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:48,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:48,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:48,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:48,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:48,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:48,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:48,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:48,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:48,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:28:48,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:28:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:48,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:48,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:48,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:48,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:48,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:48,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:48,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:48,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:48,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:28:48,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:48,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:48,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:48,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:48,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:48,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:48,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:48,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:48,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:48,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:48,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:48,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:48,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:28:48,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:48,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:48,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:48,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:48,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:48,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:48,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:48,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:48,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:48,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:48,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:48,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:28:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:48,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:48,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:48,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:48,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:48,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:48,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:48,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:48,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:48,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:28:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:48,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:48,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:48,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:48,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:48,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:28:48,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:48,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:48,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:48,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:48,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:48,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:48,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 18:28:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:48,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:48,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:48,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:48,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:48,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:48,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:48,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:48,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:48,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:48,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:48,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:48,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 18:28:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:48,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:48,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:48,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:48,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:48,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:49,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:49,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:49,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:49,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:28:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:49,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:49,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:49,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:49,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:49,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:49,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:49,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:49,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:49,052 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 24 proven. 356 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-14 18:28:49,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738464804] [2020-10-14 18:28:49,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:28:49,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-14 18:28:49,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174557513] [2020-10-14 18:28:49,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-14 18:28:49,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:28:49,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-14 18:28:49,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-10-14 18:28:49,055 INFO L87 Difference]: Start difference. First operand 226 states and 275 transitions. Second operand 21 states. [2020-10-14 18:28:50,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:28:50,920 INFO L93 Difference]: Finished difference Result 305 states and 372 transitions. [2020-10-14 18:28:50,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-14 18:28:50,921 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 139 [2020-10-14 18:28:50,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:28:50,923 INFO L225 Difference]: With dead ends: 305 [2020-10-14 18:28:50,923 INFO L226 Difference]: Without dead ends: 289 [2020-10-14 18:28:50,924 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=163, Invalid=1643, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 18:28:50,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-14 18:28:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 231. [2020-10-14 18:28:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-14 18:28:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 281 transitions. [2020-10-14 18:28:50,978 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 281 transitions. Word has length 139 [2020-10-14 18:28:50,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:28:50,978 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 281 transitions. [2020-10-14 18:28:50,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-14 18:28:50,979 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 281 transitions. [2020-10-14 18:28:50,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 18:28:50,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:28:50,980 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:28:50,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 18:28:50,981 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:28:50,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:28:50,981 INFO L82 PathProgramCache]: Analyzing trace with hash 319912187, now seen corresponding path program 27 times [2020-10-14 18:28:50,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:28:50,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894243470] [2020-10-14 18:28:50,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:28:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:51,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:51,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:51,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:51,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:51,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:51,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:51,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:51,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:51,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:51,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:51,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:51,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:51,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:51,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:51,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:52,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:52,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:52,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:52,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:52,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:52,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:56,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:56,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 18:28:56,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-14 18:28:56,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 18:28:56,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:56,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:56,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 18:28:56,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:28:56,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-14 18:28:56,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:56,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:28:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:56,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:56,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:56,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:28:56,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:56,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:56,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:56,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:56,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:56,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:56,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:56,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:56,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:28:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:56,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:56,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:56,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:56,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:56,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:56,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:56,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:56,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:56,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:56,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:56,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:56,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:28:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:56,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:56,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:56,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:56,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:56,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:56,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:56,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:56,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:56,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:56,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:56,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:56,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:28:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:56,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:56,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:56,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:56,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:56,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:56,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:56,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:56,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:56,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:56,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:28:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:56,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:56,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:56,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:56,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:56,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:56,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:56,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:56,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:56,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:56,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:56,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:56,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:28:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:56,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:56,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:56,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:56,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:56,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:56,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:56,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:56,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:56,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:56,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:56,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:28:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:56,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:56,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:56,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:56,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:56,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:56,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:56,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:56,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:56,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:56,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:56,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:56,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 18:28:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:56,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:56,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:56,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:56,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:56,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:56,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:56,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:56,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:56,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:56,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 18:28:56,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:56,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:56,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:56,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:56,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:56,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:28:56,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:56,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:28:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:28:56,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:28:56,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:56,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:28:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:56,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:56,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:56,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:56,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:56,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:56,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:56,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:56,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:56,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:56,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 18:28:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:56,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:56,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:28:56,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:28:56,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:28:56,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:28:56,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:28:56,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:28:56,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:28:56,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:28:56,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:28:56,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:28:56,565 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 105 proven. 315 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-10-14 18:28:56,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894243470] [2020-10-14 18:28:56,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:28:56,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 18:28:56,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395609806] [2020-10-14 18:28:56,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 18:28:56,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:28:56,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 18:28:56,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-14 18:28:56,567 INFO L87 Difference]: Start difference. First operand 231 states and 281 transitions. Second operand 20 states. [2020-10-14 18:28:58,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:28:58,422 INFO L93 Difference]: Finished difference Result 287 states and 347 transitions. [2020-10-14 18:28:58,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 18:28:58,427 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 148 [2020-10-14 18:28:58,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:28:58,429 INFO L225 Difference]: With dead ends: 287 [2020-10-14 18:28:58,429 INFO L226 Difference]: Without dead ends: 266 [2020-10-14 18:28:58,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=162, Invalid=1028, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 18:28:58,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-14 18:28:58,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 230. [2020-10-14 18:28:58,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-14 18:28:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 278 transitions. [2020-10-14 18:28:58,473 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 278 transitions. Word has length 148 [2020-10-14 18:28:58,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:28:58,473 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 278 transitions. [2020-10-14 18:28:58,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 18:28:58,473 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 278 transitions. [2020-10-14 18:28:58,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-14 18:28:58,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:28:58,474 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:28:58,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 18:28:58,475 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:28:58,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:28:58,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1485526147, now seen corresponding path program 28 times [2020-10-14 18:28:58,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:28:58,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433496480] [2020-10-14 18:28:58,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:28:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:28:58,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:58,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:58,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:58,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:58,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:58,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:58,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:58,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:58,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:58,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:58,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:59,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:59,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:59,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:59,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:59,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:59,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:59,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:59,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:59,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:59,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:59,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:59,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:59,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:59,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:59,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:28:59,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:00,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:03,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:03,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 18:29:03,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-14 18:29:03,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 18:29:03,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:03,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 18:29:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:29:03,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 18:29:03,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:03,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:03,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:03,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:03,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:03,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:03,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 18:29:03,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:03,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:03,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:03,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:03,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:03,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:03,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:03,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:03,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:03,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:03,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:03,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:03,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:03,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:03,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:03,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:29:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:03,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:03,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:03,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:03,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:03,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:03,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:03,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:03,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:03,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:03,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:29:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:03,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:03,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:03,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:03,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:03,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:03,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:03,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:03,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:03,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:03,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:03,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:03,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:29:03,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:03,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:03,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:03,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:03,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:03,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:03,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:03,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:03,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:03,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:03,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:03,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:03,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:29:03,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:03,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:03,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:03,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:03,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:03,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:03,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:03,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:03,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:03,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:03,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:29:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:03,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:03,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:03,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:03,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:03,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:03,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:03,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:03,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:03,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:03,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:03,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:03,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 18:29:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:03,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:03,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:03,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:03,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:03,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:03,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:03,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:03,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:03,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:03,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 18:29:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:03,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:03,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:03,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:03,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:03,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:03,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:03,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:03,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:03,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:03,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:03,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:03,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:29:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:03,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:03,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:03,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:03,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:03,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:03,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:03,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:03,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:03,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:03,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:03,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:03,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 18:29:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:03,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:03,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:03,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:03,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:03,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:03,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:03,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:03,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:03,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:03,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:03,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 18 proven. 406 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-14 18:29:03,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433496480] [2020-10-14 18:29:03,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:03,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:29:03,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056693387] [2020-10-14 18:29:03,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:29:03,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:03,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:29:03,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:29:03,982 INFO L87 Difference]: Start difference. First operand 230 states and 278 transitions. Second operand 24 states. [2020-10-14 18:29:06,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:06,417 INFO L93 Difference]: Finished difference Result 377 states and 463 transitions. [2020-10-14 18:29:06,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 18:29:06,418 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 148 [2020-10-14 18:29:06,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:06,422 INFO L225 Difference]: With dead ends: 377 [2020-10-14 18:29:06,422 INFO L226 Difference]: Without dead ends: 375 [2020-10-14 18:29:06,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=252, Invalid=2298, Unknown=0, NotChecked=0, Total=2550 [2020-10-14 18:29:06,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-14 18:29:06,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 351. [2020-10-14 18:29:06,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-10-14 18:29:06,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 432 transitions. [2020-10-14 18:29:06,564 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 432 transitions. Word has length 148 [2020-10-14 18:29:06,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:06,565 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 432 transitions. [2020-10-14 18:29:06,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:29:06,565 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 432 transitions. [2020-10-14 18:29:06,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 18:29:06,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:06,568 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:06,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 18:29:06,569 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:06,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:06,569 INFO L82 PathProgramCache]: Analyzing trace with hash 697104864, now seen corresponding path program 29 times [2020-10-14 18:29:06,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:06,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499363731] [2020-10-14 18:29:06,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:06,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:07,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:07,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:07,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:07,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:07,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:07,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:07,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:07,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:07,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:08,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:08,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:08,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:08,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:08,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:08,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:08,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:08,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:08,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:09,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:09,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:09,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:10,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:11,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:11,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 18:29:11,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-14 18:29:11,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 18:29:11,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:11,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:11,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:29:11,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:29:11,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 18:29:11,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:12,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:12,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:12,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:12,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:12,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:12,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:12,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:12,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:12,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:12,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:12,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:12,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:12,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:12,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:12,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:12,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:12,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:12,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:12,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:12,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:12,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:12,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:29:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:12,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:12,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:12,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:12,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:12,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:12,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:12,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:12,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:12,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:12,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:12,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:29:12,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:12,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:12,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:12,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:12,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:12,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:12,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:12,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:12,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:12,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:12,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:12,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:12,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:29:12,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:12,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:12,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:12,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:12,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:12,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:12,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:12,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:12,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:12,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:29:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:12,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:12,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:12,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:12,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:12,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:12,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:12,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:12,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:12,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:12,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:12,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:12,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:29:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:12,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:12,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:12,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:12,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:12,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:12,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:12,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:12,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:12,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:12,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:12,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:12,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 18:29:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:12,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:12,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:12,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:12,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:12,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:12,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:12,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:12,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:12,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:12,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:12,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:12,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 18:29:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:12,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:12,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:12,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:12,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:12,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:12,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:12,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:12,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:12,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:12,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:12,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:12,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:29:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:12,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:12,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:12,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:12,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:12,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:12,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:12,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:12,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:12,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:12,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 18:29:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:12,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:12,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:12,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:12,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:12,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:12,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:12,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:12,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:12,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:12,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:12,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-14 18:29:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:12,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:12,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:12,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:12,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:12,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:29:12,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:12,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:12,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:12,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:12,167 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 76 proven. 397 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-10-14 18:29:12,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499363731] [2020-10-14 18:29:12,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:12,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:29:12,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162532565] [2020-10-14 18:29:12,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:29:12,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:12,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:29:12,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:29:12,170 INFO L87 Difference]: Start difference. First operand 351 states and 432 transitions. Second operand 22 states. [2020-10-14 18:29:13,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:13,987 INFO L93 Difference]: Finished difference Result 390 states and 478 transitions. [2020-10-14 18:29:13,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 18:29:13,988 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 157 [2020-10-14 18:29:13,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:13,990 INFO L225 Difference]: With dead ends: 390 [2020-10-14 18:29:13,990 INFO L226 Difference]: Without dead ends: 374 [2020-10-14 18:29:13,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=142, Invalid=1190, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 18:29:13,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2020-10-14 18:29:14,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 351. [2020-10-14 18:29:14,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-10-14 18:29:14,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 431 transitions. [2020-10-14 18:29:14,046 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 431 transitions. Word has length 157 [2020-10-14 18:29:14,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:14,046 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 431 transitions. [2020-10-14 18:29:14,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:29:14,046 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 431 transitions. [2020-10-14 18:29:14,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 18:29:14,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:14,047 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:14,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 18:29:14,048 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:14,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:14,048 INFO L82 PathProgramCache]: Analyzing trace with hash -314012386, now seen corresponding path program 30 times [2020-10-14 18:29:14,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:14,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [143469998] [2020-10-14 18:29:14,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:14,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:14,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:15,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:15,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-14 18:29:15,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:29:15,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1636 [2020-10-14 18:29:15,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:15,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:15,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-14 18:29:15,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-14 18:29:15,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-14 18:29:15,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:16,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:16,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:16,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:16,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:16,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:16,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:16,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:16,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:16,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:16,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:16,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:16,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:16,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:16,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:16,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 18:29:16,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 18:29:16,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:16,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:16,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:16,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:16,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:16,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:16,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-14 18:29:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:16,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:16,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:16,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:16,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:16,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:16,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:16,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:16,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:16,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:16,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:16,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:16,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:29:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:16,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:16,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:16,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:16,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:16,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:16,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:16,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:16,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:16,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:16,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:16,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:29:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:16,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:16,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:16,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:16,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:16,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:16,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:16,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:16,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:16,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:16,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:16,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:16,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:29:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:16,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:16,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:16,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:16,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:16,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:16,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:16,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:16,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:16,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:16,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:29:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:16,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:16,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:16,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:16,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:16,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:16,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:16,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:16,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:16,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:16,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:16,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:16,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 18:29:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:16,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:16,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:16,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:16,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:16,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:16,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:16,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:16,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:16,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:16,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:16,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:16,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 18:29:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:16,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:16,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:16,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:16,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:16,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:16,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:16,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:16,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:16,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:16,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:16,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:16,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:29:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:16,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:16,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:16,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:16,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:16,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:16,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:16,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:16,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:16,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 18:29:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:16,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:16,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:16,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:16,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:16,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:16,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:16,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:16,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:16,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:16,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-14 18:29:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:16,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:16,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:16,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:16,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:16,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:16,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:16,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:16,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:16,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:16,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:16,235 INFO L134 CoverageAnalysis]: Checked inductivity of 675 backedges. 275 proven. 195 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-10-14 18:29:16,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [143469998] [2020-10-14 18:29:16,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:16,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 18:29:16,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540093676] [2020-10-14 18:29:16,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 18:29:16,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:16,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 18:29:16,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2020-10-14 18:29:16,237 INFO L87 Difference]: Start difference. First operand 351 states and 431 transitions. Second operand 22 states. [2020-10-14 18:29:17,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:17,672 INFO L93 Difference]: Finished difference Result 416 states and 500 transitions. [2020-10-14 18:29:17,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 18:29:17,673 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 157 [2020-10-14 18:29:17,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:17,675 INFO L225 Difference]: With dead ends: 416 [2020-10-14 18:29:17,675 INFO L226 Difference]: Without dead ends: 285 [2020-10-14 18:29:17,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=369, Invalid=1437, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 18:29:17,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-14 18:29:17,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 259. [2020-10-14 18:29:17,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-14 18:29:17,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 315 transitions. [2020-10-14 18:29:17,720 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 315 transitions. Word has length 157 [2020-10-14 18:29:17,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:17,721 INFO L479 AbstractCegarLoop]: Abstraction has 259 states and 315 transitions. [2020-10-14 18:29:17,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 18:29:17,721 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 315 transitions. [2020-10-14 18:29:17,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-14 18:29:17,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:17,722 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 10, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:17,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 18:29:17,723 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:17,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:17,723 INFO L82 PathProgramCache]: Analyzing trace with hash 499001798, now seen corresponding path program 31 times [2020-10-14 18:29:17,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:17,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828866420] [2020-10-14 18:29:17,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:17,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:17,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:17,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:18,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:18,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:18,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:18,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:18,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:18,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:18,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:18,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:18,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:18,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:19,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:19,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:19,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:19,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:19,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:19,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:19,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:19,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:19,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:22,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:22,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-14 18:29:22,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-14 18:29:22,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-14 18:29:22,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:22,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:22,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 18:29:22,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:29:22,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-14 18:29:22,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:23,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:23,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:23,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:23,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:23,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:23,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:23,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:23,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:23,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:23,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:23,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:23,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:23,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:23,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:23,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:23,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:23,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:23,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:29:23,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:23,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:23,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:23,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:23,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:29:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:23,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:23,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:23,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:23,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:23,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:23,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:23,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:23,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:23,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:23,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:29:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:23,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:23,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:23,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:23,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:23,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:23,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:23,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:23,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:23,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:23,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:23,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:23,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:29:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:23,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:23,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:23,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:23,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:23,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:23,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:23,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:23,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:23,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:23,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:23,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:23,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:29:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:23,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:23,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:23,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:23,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:23,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:23,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:23,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:23,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:23,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:23,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:23,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:23,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 18:29:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:23,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:23,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:23,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:23,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:23,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:23,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:23,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:23,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:23,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:23,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:23,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:23,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 18:29:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:23,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:23,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:23,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:23,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:23,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:23,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:23,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:23,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:23,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:23,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:23,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:23,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:29:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:23,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:23,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:23,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:23,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:23,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:23,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:23,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:23,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:23,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:23,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 18:29:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:23,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:23,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:23,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:23,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:23,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:23,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:23,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:23,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:23,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-14 18:29:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:23,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:23,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:23,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:23,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:23,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:23,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:23,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:23,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:23,492 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 18 proven. 505 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2020-10-14 18:29:23,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828866420] [2020-10-14 18:29:23,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:23,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 18:29:23,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627066890] [2020-10-14 18:29:23,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 18:29:23,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:23,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 18:29:23,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-14 18:29:23,494 INFO L87 Difference]: Start difference. First operand 259 states and 315 transitions. Second operand 25 states. [2020-10-14 18:29:28,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:28,404 INFO L93 Difference]: Finished difference Result 394 states and 486 transitions. [2020-10-14 18:29:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-14 18:29:28,405 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 157 [2020-10-14 18:29:28,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:28,408 INFO L225 Difference]: With dead ends: 394 [2020-10-14 18:29:28,409 INFO L226 Difference]: Without dead ends: 392 [2020-10-14 18:29:28,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=361, Invalid=3545, Unknown=0, NotChecked=0, Total=3906 [2020-10-14 18:29:28,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2020-10-14 18:29:28,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 269. [2020-10-14 18:29:28,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-14 18:29:28,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 327 transitions. [2020-10-14 18:29:28,477 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 327 transitions. Word has length 157 [2020-10-14 18:29:28,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:28,478 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 327 transitions. [2020-10-14 18:29:28,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 18:29:28,478 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 327 transitions. [2020-10-14 18:29:28,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 18:29:28,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:28,480 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:28,480 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 18:29:28,480 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:28,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:28,480 INFO L82 PathProgramCache]: Analyzing trace with hash -2080211529, now seen corresponding path program 32 times [2020-10-14 18:29:28,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:28,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760484949] [2020-10-14 18:29:28,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:28,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:28,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:28,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:28,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:28,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:29,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:29,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:29,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:29,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:29,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:29,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:29,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:29,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:29,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:30,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:30,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:30,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:30,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:30,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:30,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:30,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:30,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:30,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:30,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:30,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:30,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:30,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:30,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:33,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:33,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-14 18:29:33,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-14 18:29:33,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-14 18:29:33,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:33,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-14 18:29:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:29:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-14 18:29:33,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:34,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:34,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:34,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:34,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:34,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:34,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:34,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:34,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:34,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:34,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:34,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:34,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:34,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:34,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:34,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:34,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:34,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:34,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:34,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:29:34,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:34,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:34,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:34,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:34,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:29:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:34,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:34,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:34,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:34,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:34,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:34,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:34,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:34,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:34,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:34,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:34,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:34,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:29:34,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:34,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:34,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:34,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:34,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:34,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:34,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:34,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:34,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:34,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:34,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:34,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:34,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:29:34,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:34,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:34,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:34,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:34,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:34,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:34,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:34,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:34,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:34,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:34,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:34,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:34,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:29:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:34,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:34,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:34,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:34,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:34,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:34,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:34,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:34,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:34,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:34,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 18:29:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:34,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:34,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:34,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:34,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:34,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:34,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:34,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:34,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:34,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:34,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:34,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:34,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 18:29:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:34,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:34,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:34,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:34,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:34,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:34,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:34,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:34,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:34,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:34,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:34,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:34,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:29:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:34,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:34,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:34,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:34,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:34,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:34,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:34,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:34,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:34,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:34,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 18:29:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:34,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:34,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:34,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:34,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:34,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:34,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:34,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:34,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:34,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:34,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:34,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:34,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-14 18:29:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:34,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:34,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:34,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:34,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:34,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:34,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:34,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:34,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:34,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:34,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:34,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:34,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 18:29:34,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:34,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:34,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:34,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:34,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:34,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:34,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:34,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:34,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:34,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:34,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:34,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:34,128 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 30 proven. 541 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2020-10-14 18:29:34,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760484949] [2020-10-14 18:29:34,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:34,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-14 18:29:34,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151156993] [2020-10-14 18:29:34,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-14 18:29:34,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:34,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-14 18:29:34,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-14 18:29:34,131 INFO L87 Difference]: Start difference. First operand 269 states and 327 transitions. Second operand 24 states. [2020-10-14 18:29:36,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:36,696 INFO L93 Difference]: Finished difference Result 348 states and 424 transitions. [2020-10-14 18:29:36,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-14 18:29:36,697 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 166 [2020-10-14 18:29:36,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:36,700 INFO L225 Difference]: With dead ends: 348 [2020-10-14 18:29:36,701 INFO L226 Difference]: Without dead ends: 332 [2020-10-14 18:29:36,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=184, Invalid=2168, Unknown=0, NotChecked=0, Total=2352 [2020-10-14 18:29:36,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-14 18:29:36,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 274. [2020-10-14 18:29:36,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-14 18:29:36,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 333 transitions. [2020-10-14 18:29:36,759 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 333 transitions. Word has length 166 [2020-10-14 18:29:36,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:36,760 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 333 transitions. [2020-10-14 18:29:36,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-14 18:29:36,760 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 333 transitions. [2020-10-14 18:29:36,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-14 18:29:36,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:36,762 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 7, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:36,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 18:29:36,762 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:36,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:36,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1290860314, now seen corresponding path program 33 times [2020-10-14 18:29:36,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:36,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869305482] [2020-10-14 18:29:36,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:36,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:36,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:37,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:38,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:38,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:38,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:38,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:38,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:38,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:39,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:41,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:41,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 18:29:41,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-14 18:29:41,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-14 18:29:41,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:41,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:41,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-14 18:29:41,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-14 18:29:41,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-14 18:29:41,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:42,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:42,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:42,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:42,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:42,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:42,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:42,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:29:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:42,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:42,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:42,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:29:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:42,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:42,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:42,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:29:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:42,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:42,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:42,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:29:42,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:42,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:42,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:42,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 18:29:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:42,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:42,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:42,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 18:29:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:42,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:42,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:42,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:29:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:42,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:42,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:42,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 18:29:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:42,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:42,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-14 18:29:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:42,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:42,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:42,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:42,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 18:29:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:29:42,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:42,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:42,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-14 18:29:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:42,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:42,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:42,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:42,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:42,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 18:29:42,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:42,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 18:29:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:42,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:42,541 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 126 proven. 490 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2020-10-14 18:29:42,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869305482] [2020-10-14 18:29:42,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:42,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 18:29:42,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883867083] [2020-10-14 18:29:42,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 18:29:42,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:42,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 18:29:42,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-14 18:29:42,543 INFO L87 Difference]: Start difference. First operand 274 states and 333 transitions. Second operand 23 states. [2020-10-14 18:29:44,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:44,676 INFO L93 Difference]: Finished difference Result 448 states and 551 transitions. [2020-10-14 18:29:44,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-14 18:29:44,676 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 175 [2020-10-14 18:29:44,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:44,679 INFO L225 Difference]: With dead ends: 448 [2020-10-14 18:29:44,679 INFO L226 Difference]: Without dead ends: 427 [2020-10-14 18:29:44,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=114, Invalid=1218, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 18:29:44,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-14 18:29:44,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 406. [2020-10-14 18:29:44,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2020-10-14 18:29:44,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 502 transitions. [2020-10-14 18:29:44,782 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 502 transitions. Word has length 175 [2020-10-14 18:29:44,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:44,783 INFO L479 AbstractCegarLoop]: Abstraction has 406 states and 502 transitions. [2020-10-14 18:29:44,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 18:29:44,783 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 502 transitions. [2020-10-14 18:29:44,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-14 18:29:44,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:44,786 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:44,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 18:29:44,786 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:44,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:44,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1198668648, now seen corresponding path program 34 times [2020-10-14 18:29:44,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:44,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749273522] [2020-10-14 18:29:44,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:44,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:44,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:45,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:47,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:47,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:47,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:47,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:47,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:48,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:48,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:48,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:48,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:48,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:48,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:49,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:49,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:49,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:49,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:49,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:49,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-14 18:29:49,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 34 [2020-10-14 18:29:49,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 18:29:49,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:49,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-14 18:29:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 18:29:49,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 194 [2020-10-14 18:29:49,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 18:29:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 18:29:50,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 18:29:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:50,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 18:29:50,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 18:29:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:50,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:50,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:50,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-14 18:29:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:50,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:50,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-14 18:29:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:50,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:50,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:50,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 18:29:50,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-14 18:29:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:50,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:50,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:50,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-14 18:29:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:50,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:50,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:50,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-14 18:29:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:50,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:50,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-14 18:29:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:50,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:50,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:50,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 18:29:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:50,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:50,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:50,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-14 18:29:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:50,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:50,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-14 18:29:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:50,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:50,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:50,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 18:29:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 18:29:50,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:50,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:50,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:50,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-14 18:29:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:50,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:50,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 18:29:50,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 18:29:50,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 18:29:50,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 18:29:50,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 18:29:50,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 18:29:50,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 18:29:50,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 18:29:50,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 18:29:50,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 18:29:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 871 backedges. 22 proven. 603 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-14 18:29:50,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749273522] [2020-10-14 18:29:50,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 18:29:50,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 18:29:50,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557065060] [2020-10-14 18:29:50,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 18:29:50,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 18:29:50,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 18:29:50,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2020-10-14 18:29:50,495 INFO L87 Difference]: Start difference. First operand 406 states and 502 transitions. Second operand 27 states. [2020-10-14 18:29:53,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 18:29:53,647 INFO L93 Difference]: Finished difference Result 691 states and 862 transitions. [2020-10-14 18:29:53,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-14 18:29:53,648 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 175 [2020-10-14 18:29:53,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 18:29:53,651 INFO L225 Difference]: With dead ends: 691 [2020-10-14 18:29:53,651 INFO L226 Difference]: Without dead ends: 689 [2020-10-14 18:29:53,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 545 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=279, Invalid=3027, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 18:29:53,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2020-10-14 18:29:53,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 650. [2020-10-14 18:29:53,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 650 states. [2020-10-14 18:29:53,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 815 transitions. [2020-10-14 18:29:53,831 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 815 transitions. Word has length 175 [2020-10-14 18:29:53,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 18:29:53,832 INFO L479 AbstractCegarLoop]: Abstraction has 650 states and 815 transitions. [2020-10-14 18:29:53,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 18:29:53,832 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 815 transitions. [2020-10-14 18:29:53,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-14 18:29:53,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 18:29:53,835 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 18:29:53,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 18:29:53,836 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 18:29:53,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 18:29:53,836 INFO L82 PathProgramCache]: Analyzing trace with hash 2076910165, now seen corresponding path program 35 times [2020-10-14 18:29:53,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 18:29:53,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970954772] [2020-10-14 18:29:53,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 18:29:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 18:29:53,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:54,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:54,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:54,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:54,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:54,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:54,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:55,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:55,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:55,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:55,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:55,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:55,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:55,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 18:29:55,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking...