/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:51:30,859 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:51:30,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:51:30,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:51:30,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:51:30,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:51:30,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:51:30,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:51:30,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:51:30,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:51:30,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:51:30,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:51:30,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:51:30,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:51:30,907 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:51:30,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:51:30,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:51:30,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:51:30,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:51:30,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:51:30,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:51:30,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:51:30,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:51:30,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:51:30,938 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:51:30,938 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:51:30,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:51:30,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:51:30,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:51:30,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:51:30,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:51:30,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:51:30,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:51:30,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:51:30,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:51:30,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:51:30,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:51:30,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:51:30,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:51:30,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:51:30,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:51:30,955 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 23:51:31,022 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:51:31,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:51:31,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:51:31,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:51:31,024 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:51:31,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:51:31,025 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:51:31,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:51:31,026 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:51:31,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:51:31,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:51:31,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:51:31,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:51:31,027 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:51:31,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:51:31,027 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:51:31,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:51:31,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:51:31,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:51:31,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:51:31,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:51:31,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:51:31,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:51:31,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:51:31,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:51:31,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:51:31,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:51:31,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:51:31,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:51:31,031 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:51:31,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:51:31,543 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:51:31,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:51:31,550 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:51:31,551 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:51:31,552 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test25-2.c [2020-09-24 23:51:31,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0212898e2/22de89a78f184464bf823df2795ee459/FLAGcfd6d18c2 [2020-09-24 23:51:32,210 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:51:32,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test25-2.c [2020-09-24 23:51:32,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0212898e2/22de89a78f184464bf823df2795ee459/FLAGcfd6d18c2 [2020-09-24 23:51:32,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0212898e2/22de89a78f184464bf823df2795ee459 [2020-09-24 23:51:32,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:51:32,555 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:51:32,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:51:32,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:51:32,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:51:32,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:51:32" (1/1) ... [2020-09-24 23:51:32,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@629af9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:32, skipping insertion in model container [2020-09-24 23:51:32,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:51:32" (1/1) ... [2020-09-24 23:51:32,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:51:32,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:51:32,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:51:32,852 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:51:32,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:51:32,900 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:51:32,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:32 WrapperNode [2020-09-24 23:51:32,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:51:32,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:51:32,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:51:32,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:51:33,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:32" (1/1) ... [2020-09-24 23:51:33,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:32" (1/1) ... [2020-09-24 23:51:33,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:32" (1/1) ... [2020-09-24 23:51:33,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:32" (1/1) ... [2020-09-24 23:51:33,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:32" (1/1) ... [2020-09-24 23:51:33,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:32" (1/1) ... [2020-09-24 23:51:33,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:32" (1/1) ... [2020-09-24 23:51:33,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:51:33,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:51:33,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:51:33,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:51:33,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:51:33,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:51:33,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:51:33,128 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-09-24 23:51:33,129 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:51:33,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:51:33,129 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:51:33,129 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-24 23:51:33,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 23:51:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:51:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:51:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:51:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:51:33,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 23:51:33,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:51:33,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:51:33,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:51:33,601 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:51:33,602 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 23:51:33,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:51:33 BoogieIcfgContainer [2020-09-24 23:51:33,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:51:33,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:51:33,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:51:33,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:51:33,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:51:32" (1/3) ... [2020-09-24 23:51:33,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4528eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:51:33, skipping insertion in model container [2020-09-24 23:51:33,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:32" (2/3) ... [2020-09-24 23:51:33,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4528eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:51:33, skipping insertion in model container [2020-09-24 23:51:33,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:51:33" (3/3) ... [2020-09-24 23:51:33,618 INFO L109 eAbstractionObserver]: Analyzing ICFG test25-2.c [2020-09-24 23:51:33,628 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:51:33,639 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:51:33,662 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:51:33,693 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:51:33,694 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:51:33,694 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:51:33,694 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:51:33,694 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:51:33,695 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:51:33,695 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:51:33,695 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:51:33,720 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2020-09-24 23:51:33,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 23:51:33,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:33,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:33,730 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:33,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:33,736 INFO L82 PathProgramCache]: Analyzing trace with hash 144198137, now seen corresponding path program 1 times [2020-09-24 23:51:33,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:33,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056947205] [2020-09-24 23:51:33,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:33,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:33,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:34,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:34,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 23:51:34,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:51:34,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-09-24 23:51:34,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:34,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:34,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 23:51:34,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:34,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 23:51:34,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:34,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:34,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:34,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:51:34,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:34,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:51:34,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:34,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:34,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:34,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:34,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:34,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 23:51:34,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:34,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:34,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:34,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:51:34,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:34,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:51:34,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 23:51:34,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:34,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:34,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:51:34,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056947205] [2020-09-24 23:51:34,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:51:34,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 23:51:34,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747488771] [2020-09-24 23:51:34,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 23:51:34,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:34,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 23:51:34,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 23:51:34,432 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2020-09-24 23:51:34,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:34,655 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-09-24 23:51:34,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 23:51:34,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-09-24 23:51:34,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:34,677 INFO L225 Difference]: With dead ends: 124 [2020-09-24 23:51:34,677 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 23:51:34,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 23:51:34,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 23:51:34,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-09-24 23:51:34,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 23:51:34,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-09-24 23:51:34,757 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 44 [2020-09-24 23:51:34,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:34,759 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-09-24 23:51:34,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 23:51:34,759 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-09-24 23:51:34,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 23:51:34,762 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:34,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:34,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:51:34,764 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:34,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:34,767 INFO L82 PathProgramCache]: Analyzing trace with hash 608042528, now seen corresponding path program 1 times [2020-09-24 23:51:34,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:34,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023712823] [2020-09-24 23:51:34,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:34,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:34,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:35,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:35,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:51:35,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:51:35,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 989 [2020-09-24 23:51:35,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:51:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 23:51:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 23:51:35,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:35,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:35,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:35,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:35,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:35,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:51:35,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:35,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:51:35,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:35,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:35,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 23:51:35,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-24 23:51:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:35,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:35,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:35,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:51:35,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:35,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:51:35,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:35,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:35,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 23:51:35,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:35,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:35,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:51:35,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023712823] [2020-09-24 23:51:35,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:51:35,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 23:51:35,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332983778] [2020-09-24 23:51:35,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 23:51:35,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:35,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 23:51:35,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 23:51:35,893 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 4 states. [2020-09-24 23:51:36,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:36,052 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2020-09-24 23:51:36,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 23:51:36,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-24 23:51:36,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:36,055 INFO L225 Difference]: With dead ends: 104 [2020-09-24 23:51:36,055 INFO L226 Difference]: Without dead ends: 69 [2020-09-24 23:51:36,057 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 [2020-09-24 23:51:36,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-24 23:51:36,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 61. [2020-09-24 23:51:36,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-24 23:51:36,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2020-09-24 23:51:36,067 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 46 [2020-09-24 23:51:36,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:36,067 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2020-09-24 23:51:36,067 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 23:51:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2020-09-24 23:51:36,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-24 23:51:36,069 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:36,070 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:36,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:51:36,070 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:36,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:36,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1644606330, now seen corresponding path program 1 times [2020-09-24 23:51:36,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:36,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411962228] [2020-09-24 23:51:36,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:36,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:36,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:37,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:37,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 23:51:37,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:51:37,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1469 [2020-09-24 23:51:37,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:37,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:51:37,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 23:51:37,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:51:37,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:37,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:37,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:37,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:37,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:51:37,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:37,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:51:37,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:37,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:37,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-24 23:51:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:37,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:37,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:37,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:51:37,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:37,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:51:37,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:37,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:37,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 23:51:37,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:37,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:51:37,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411962228] [2020-09-24 23:51:37,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:51:37,651 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 23:51:37,651 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419725030] [2020-09-24 23:51:37,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:51:37,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:37,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:51:37,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:51:37,654 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 6 states. [2020-09-24 23:51:37,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:37,842 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2020-09-24 23:51:37,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:51:37,843 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 56 [2020-09-24 23:51:37,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:37,844 INFO L225 Difference]: With dead ends: 114 [2020-09-24 23:51:37,845 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 23:51:37,845 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 [2020-09-24 23:51:37,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 23:51:37,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 71. [2020-09-24 23:51:37,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 23:51:37,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-09-24 23:51:37,854 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 56 [2020-09-24 23:51:37,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:37,855 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-09-24 23:51:37,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:51:37,855 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-09-24 23:51:37,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-24 23:51:37,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:37,857 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:37,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:51:37,857 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:37,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:37,858 INFO L82 PathProgramCache]: Analyzing trace with hash 278397012, now seen corresponding path program 2 times [2020-09-24 23:51:37,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:37,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392678237] [2020-09-24 23:51:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:37,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:37,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:40,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:40,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 23:51:40,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:51:40,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2322 [2020-09-24 23:51:40,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:40,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:51:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 23:51:40,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 23:51:40,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:40,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:40,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:40,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:40,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:51:40,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:40,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:51:40,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:40,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:40,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:40,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:40,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-24 23:51:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:40,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:40,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:40,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:51:40,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:40,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:51:40,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:40,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:40,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 23:51:40,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:40,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:51:40,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392678237] [2020-09-24 23:51:40,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:51:40,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 23:51:40,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986739047] [2020-09-24 23:51:40,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:51:40,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:40,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:51:40,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:51:40,399 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 8 states. [2020-09-24 23:51:40,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:40,658 INFO L93 Difference]: Finished difference Result 124 states and 126 transitions. [2020-09-24 23:51:40,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 23:51:40,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-09-24 23:51:40,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:40,661 INFO L225 Difference]: With dead ends: 124 [2020-09-24 23:51:40,661 INFO L226 Difference]: Without dead ends: 89 [2020-09-24 23:51:40,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:51:40,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-24 23:51:40,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 81. [2020-09-24 23:51:40,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-24 23:51:40,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-09-24 23:51:40,680 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 66 [2020-09-24 23:51:40,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:40,681 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-09-24 23:51:40,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:51:40,683 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-09-24 23:51:40,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 23:51:40,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:40,686 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:40,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:51:40,687 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:40,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:40,688 INFO L82 PathProgramCache]: Analyzing trace with hash 767198382, now seen corresponding path program 3 times [2020-09-24 23:51:40,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:40,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901777291] [2020-09-24 23:51:40,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:40,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:40,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:40,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:44,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:44,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:51:44,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:51:44,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3536 [2020-09-24 23:51:44,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:44,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:51:44,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 23:51:44,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-24 23:51:44,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:44,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:44,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:44,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:44,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:51:44,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:44,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:51:44,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:44,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:44,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:44,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:44,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-24 23:51:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:44,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:44,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:44,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:51:44,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:44,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:51:44,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 23:51:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:44,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:51:44,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901777291] [2020-09-24 23:51:44,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:51:44,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 23:51:44,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448065977] [2020-09-24 23:51:44,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 23:51:44,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:44,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 23:51:44,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 23:51:44,384 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 10 states. [2020-09-24 23:51:44,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:44,762 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions. [2020-09-24 23:51:44,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 23:51:44,763 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 76 [2020-09-24 23:51:44,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:44,766 INFO L225 Difference]: With dead ends: 134 [2020-09-24 23:51:44,767 INFO L226 Difference]: Without dead ends: 99 [2020-09-24 23:51:44,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:51:44,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-09-24 23:51:44,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 91. [2020-09-24 23:51:44,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-24 23:51:44,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2020-09-24 23:51:44,794 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 76 [2020-09-24 23:51:44,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:44,795 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2020-09-24 23:51:44,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 23:51:44,795 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2020-09-24 23:51:44,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 23:51:44,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:44,801 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:44,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:51:44,801 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:44,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:44,803 INFO L82 PathProgramCache]: Analyzing trace with hash 216981640, now seen corresponding path program 4 times [2020-09-24 23:51:44,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:44,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895458061] [2020-09-24 23:51:44,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:44,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:44,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:49,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:49,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 23:51:49,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:51:49,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4911 [2020-09-24 23:51:49,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:49,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 23:51:49,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 23:51:49,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 23:51:49,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:49,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:49,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:49,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:49,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:51:49,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:49,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:51:49,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:49,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:49,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:49,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:49,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-24 23:51:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:49,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:49,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:49,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:51:49,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:49,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:51:49,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:49,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 23:51:49,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:49,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:51:49,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895458061] [2020-09-24 23:51:49,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:51:49,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 23:51:49,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006109717] [2020-09-24 23:51:49,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 23:51:49,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:49,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 23:51:49,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:51:49,932 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 12 states. [2020-09-24 23:51:50,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:50,234 INFO L93 Difference]: Finished difference Result 144 states and 146 transitions. [2020-09-24 23:51:50,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 23:51:50,235 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 86 [2020-09-24 23:51:50,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:50,236 INFO L225 Difference]: With dead ends: 144 [2020-09-24 23:51:50,237 INFO L226 Difference]: Without dead ends: 109 [2020-09-24 23:51:50,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-24 23:51:50,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-24 23:51:50,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2020-09-24 23:51:50,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-24 23:51:50,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2020-09-24 23:51:50,245 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 86 [2020-09-24 23:51:50,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:50,246 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2020-09-24 23:51:50,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 23:51:50,246 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2020-09-24 23:51:50,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-24 23:51:50,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:50,247 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:50,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:51:50,248 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:50,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:50,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1855081502, now seen corresponding path program 5 times [2020-09-24 23:51:50,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:50,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202894082] [2020-09-24 23:51:50,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:50,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:50,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:55,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:55,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-24 23:51:55,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:51:55,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 23:51:55,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:55,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:51:55,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 23:51:55,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:51:55,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:55,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:55,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:55,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:55,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:51:55,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:55,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:51:55,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:55,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:55,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:55,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:55,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-24 23:51:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:55,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:55,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:55,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:51:55,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:55,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:51:55,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:55,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:55,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 23:51:55,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:55,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:55,521 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:51:55,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202894082] [2020-09-24 23:51:55,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:51:55,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 23:51:55,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388893188] [2020-09-24 23:51:55,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 23:51:55,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:55,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 23:51:55,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-24 23:51:55,528 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 14 states. [2020-09-24 23:51:55,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:55,896 INFO L93 Difference]: Finished difference Result 154 states and 156 transitions. [2020-09-24 23:51:55,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 23:51:55,896 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 96 [2020-09-24 23:51:55,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:55,900 INFO L225 Difference]: With dead ends: 154 [2020-09-24 23:51:55,900 INFO L226 Difference]: Without dead ends: 119 [2020-09-24 23:51:55,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-09-24 23:51:55,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-24 23:51:55,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2020-09-24 23:51:55,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-24 23:51:55,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2020-09-24 23:51:55,915 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 96 [2020-09-24 23:51:55,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:55,916 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2020-09-24 23:51:55,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 23:51:55,916 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2020-09-24 23:51:55,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-24 23:51:55,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:55,917 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:55,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 23:51:55,918 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:55,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:55,918 INFO L82 PathProgramCache]: Analyzing trace with hash -400056644, now seen corresponding path program 6 times [2020-09-24 23:51:55,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:55,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1156742607] [2020-09-24 23:51:55,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:55,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:56,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:00,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:00,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 23:52:00,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:52:00,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-24 23:52:00,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:00,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 23:52:00,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 23:52:00,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 23:52:00,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:01,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:01,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:01,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:01,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:01,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:01,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:52:01,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:01,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:01,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:01,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:01,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:01,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-24 23:52:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:01,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:01,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:01,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:52:01,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:01,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:52:01,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:01,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:01,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 23:52:01,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:01,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:01,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1156742607] [2020-09-24 23:52:01,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:52:01,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 23:52:01,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679944789] [2020-09-24 23:52:01,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 23:52:01,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:01,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 23:52:01,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:52:01,196 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 16 states. [2020-09-24 23:52:01,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:01,589 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions. [2020-09-24 23:52:01,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 23:52:01,590 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 106 [2020-09-24 23:52:01,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:01,591 INFO L225 Difference]: With dead ends: 164 [2020-09-24 23:52:01,591 INFO L226 Difference]: Without dead ends: 129 [2020-09-24 23:52:01,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2020-09-24 23:52:01,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-09-24 23:52:01,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 121. [2020-09-24 23:52:01,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-09-24 23:52:01,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2020-09-24 23:52:01,602 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 106 [2020-09-24 23:52:01,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:01,603 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2020-09-24 23:52:01,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 23:52:01,604 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2020-09-24 23:52:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-24 23:52:01,605 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:01,605 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:52:01,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 23:52:01,606 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:52:01,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:01,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1044037354, now seen corresponding path program 7 times [2020-09-24 23:52:01,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:01,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290679576] [2020-09-24 23:52:01,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:01,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:01,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:06,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:06,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 23:52:06,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:52:06,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-24 23:52:06,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:06,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 23:52:06,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 23:52:06,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 23:52:06,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:06,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:06,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:06,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:06,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:06,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:06,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:52:06,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:06,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:06,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:06,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:06,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:06,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-24 23:52:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:06,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:06,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:06,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:52:06,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:06,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:52:06,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:06,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:06,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 23:52:06,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:06,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:52:06,960 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 0 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:06,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290679576] [2020-09-24 23:52:06,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:52:06,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 23:52:06,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278942389] [2020-09-24 23:52:06,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 23:52:06,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:06,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 23:52:06,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-09-24 23:52:06,971 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 18 states. [2020-09-24 23:52:07,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:07,571 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2020-09-24 23:52:07,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 23:52:07,572 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 116 [2020-09-24 23:52:07,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:07,573 INFO L225 Difference]: With dead ends: 174 [2020-09-24 23:52:07,573 INFO L226 Difference]: Without dead ends: 139 [2020-09-24 23:52:07,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=320, Invalid=672, Unknown=0, NotChecked=0, Total=992 [2020-09-24 23:52:07,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-09-24 23:52:07,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 131. [2020-09-24 23:52:07,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-24 23:52:07,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2020-09-24 23:52:07,586 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 116 [2020-09-24 23:52:07,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:07,586 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2020-09-24 23:52:07,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 23:52:07,586 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2020-09-24 23:52:07,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-09-24 23:52:07,590 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:07,590 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:52:07,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 23:52:07,590 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:52:07,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:07,592 INFO L82 PathProgramCache]: Analyzing trace with hash 212286192, now seen corresponding path program 8 times [2020-09-24 23:52:07,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:07,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713213396] [2020-09-24 23:52:07,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:07,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:07,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:12,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:12,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-24 23:52:12,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:52:12,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-24 23:52:12,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:12,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 23:52:12,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 23:52:12,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-09-24 23:52:12,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:12,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:12,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:12,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:12,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:12,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:12,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:52:12,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:12,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:12,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-24 23:52:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:12,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:12,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:12,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:52:12,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:12,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:52:12,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:12,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:12,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 23:52:12,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:12,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:12,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713213396] [2020-09-24 23:52:12,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:52:12,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 23:52:12,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528817308] [2020-09-24 23:52:12,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 23:52:12,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:12,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 23:52:12,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-09-24 23:52:12,945 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand 20 states. [2020-09-24 23:52:13,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:13,556 INFO L93 Difference]: Finished difference Result 184 states and 186 transitions. [2020-09-24 23:52:13,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-24 23:52:13,556 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 126 [2020-09-24 23:52:13,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:13,557 INFO L225 Difference]: With dead ends: 184 [2020-09-24 23:52:13,558 INFO L226 Difference]: Without dead ends: 149 [2020-09-24 23:52:13,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=405, Invalid=855, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 23:52:13,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-09-24 23:52:13,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 141. [2020-09-24 23:52:13,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-09-24 23:52:13,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2020-09-24 23:52:13,565 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 126 [2020-09-24 23:52:13,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:13,566 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2020-09-24 23:52:13,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 23:52:13,566 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2020-09-24 23:52:13,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-24 23:52:13,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:13,567 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:52:13,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 23:52:13,567 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:52:13,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:13,568 INFO L82 PathProgramCache]: Analyzing trace with hash 786836554, now seen corresponding path program 9 times [2020-09-24 23:52:13,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:13,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433566700] [2020-09-24 23:52:13,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:13,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:13,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:18,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:18,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 23:52:18,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:52:18,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-24 23:52:18,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 23:52:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 23:52:18,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-09-24 23:52:18,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:18,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:18,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:18,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:18,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:18,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:18,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:52:18,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:18,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:18,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:18,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-24 23:52:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:18,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:18,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:18,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:52:18,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:18,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:52:18,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 23:52:18,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:18,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 0 proven. 369 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:52:18,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433566700] [2020-09-24 23:52:18,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:52:18,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-24 23:52:18,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010190242] [2020-09-24 23:52:18,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-24 23:52:18,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:18,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-24 23:52:18,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-09-24 23:52:18,975 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand 22 states. [2020-09-24 23:52:19,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:52:19,692 INFO L93 Difference]: Finished difference Result 186 states and 188 transitions. [2020-09-24 23:52:19,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-09-24 23:52:19,692 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 136 [2020-09-24 23:52:19,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:52:19,694 INFO L225 Difference]: With dead ends: 186 [2020-09-24 23:52:19,694 INFO L226 Difference]: Without dead ends: 151 [2020-09-24 23:52:19,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=500, Invalid=1060, Unknown=0, NotChecked=0, Total=1560 [2020-09-24 23:52:19,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-24 23:52:19,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2020-09-24 23:52:19,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-09-24 23:52:19,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 152 transitions. [2020-09-24 23:52:19,700 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 152 transitions. Word has length 136 [2020-09-24 23:52:19,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:52:19,701 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 152 transitions. [2020-09-24 23:52:19,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-24 23:52:19,701 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 152 transitions. [2020-09-24 23:52:19,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-24 23:52:19,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:52:19,703 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:52:19,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 23:52:19,703 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:52:19,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:52:19,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1068321500, now seen corresponding path program 10 times [2020-09-24 23:52:19,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:52:19,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277410497] [2020-09-24 23:52:19,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:52:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:20,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:20,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:20,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-24 23:52:20,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:20,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-09-24 23:52:20,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:20,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:52:20,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-09-24 23:52:20,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 23:52:20,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:21,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:52:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:21,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:21,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:21,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:52:21,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:21,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:52:21,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:52:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:21,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:21,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-24 23:52:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:52:21,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:52:21,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:52:21,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:52:21,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:52:21,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:52:21,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:52:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:52:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 23:52:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:52:21,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:52:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 460 trivial. 0 not checked. [2020-09-24 23:52:21,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277410497] [2020-09-24 23:52:21,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:52:21,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 23:52:21,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745660754] [2020-09-24 23:52:21,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:52:21,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:52:21,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:52:21,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:52:21,077 INFO L87 Difference]: Start difference. First operand 151 states and 152 transitions. Second operand 9 states.