/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:26:46,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:26:46,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:26:46,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:26:46,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:26:46,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:26:46,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:26:46,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:26:46,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:26:46,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:26:46,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:26:46,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:26:46,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:26:46,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:26:46,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:26:46,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:26:46,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:26:46,871 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:26:46,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:26:46,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:26:46,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:26:46,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:26:46,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:26:46,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:26:46,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:26:46,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:26:46,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:26:46,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:26:46,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:26:46,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:26:46,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:26:46,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:26:46,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:26:46,928 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:26:46,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:26:46,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:26:46,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:26:46,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:26:46,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:26:46,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:26:46,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:26:46,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:26:47,017 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:26:47,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:26:47,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:26:47,025 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:26:47,026 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:26:47,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:26:47,028 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:26:47,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:26:47,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:26:47,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:26:47,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:26:47,031 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:26:47,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:26:47,032 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:26:47,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:26:47,032 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:26:47,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:26:47,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:26:47,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:26:47,034 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:26:47,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:26:47,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:26:47,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:26:47,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:26:47,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:26:47,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:26:47,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:26:47,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:26:47,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:26:47,037 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:26:47,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:26:47,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:26:47,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:26:47,731 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:26:47,732 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:26:47,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const_m5.c [2020-10-29 03:26:47,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c8b8bc67/0697d3e438b94f4b87e2529de5ae0908/FLAG1bc3433da [2020-10-29 03:26:48,848 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:26:48,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum_const_m5.c [2020-10-29 03:26:48,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c8b8bc67/0697d3e438b94f4b87e2529de5ae0908/FLAG1bc3433da [2020-10-29 03:26:49,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c8b8bc67/0697d3e438b94f4b87e2529de5ae0908 [2020-10-29 03:26:49,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:26:49,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:26:49,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:26:49,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:26:49,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:26:49,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:26:49" (1/1) ... [2020-10-29 03:26:49,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16376597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49, skipping insertion in model container [2020-10-29 03:26:49,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:26:49" (1/1) ... [2020-10-29 03:26:49,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:26:49,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:26:49,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:26:49,338 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:26:49,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:26:49,399 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:26:49,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49 WrapperNode [2020-10-29 03:26:49,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:26:49,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:26:49,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:26:49,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:26:49,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49" (1/1) ... [2020-10-29 03:26:49,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49" (1/1) ... [2020-10-29 03:26:49,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49" (1/1) ... [2020-10-29 03:26:49,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49" (1/1) ... [2020-10-29 03:26:49,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49" (1/1) ... [2020-10-29 03:26:49,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49" (1/1) ... [2020-10-29 03:26:49,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49" (1/1) ... [2020-10-29 03:26:49,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:26:49,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:26:49,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:26:49,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:26:49,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:26:49,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:26:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:26:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:26:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:26:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:26:49,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:26:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:26:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:26:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:26:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:26:49,580 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:26:49,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:26:49,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-29 03:26:49,581 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:26:49,581 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:26:49,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:26:49,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:26:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:26:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:26:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:26:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:26:49,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:26:50,528 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:26:50,528 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-29 03:26:50,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:26:50 BoogieIcfgContainer [2020-10-29 03:26:50,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:26:50,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:26:50,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:26:50,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:26:50,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:26:49" (1/3) ... [2020-10-29 03:26:50,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b6ca4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:26:50, skipping insertion in model container [2020-10-29 03:26:50,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:26:49" (2/3) ... [2020-10-29 03:26:50,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68b6ca4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:26:50, skipping insertion in model container [2020-10-29 03:26:50,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:26:50" (3/3) ... [2020-10-29 03:26:50,546 INFO L111 eAbstractionObserver]: Analyzing ICFG zero_sum_const_m5.c [2020-10-29 03:26:50,567 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:26:50,576 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:26:50,597 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:26:50,643 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:26:50,644 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:26:50,644 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:26:50,644 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:26:50,644 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:26:50,644 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:26:50,645 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:26:50,645 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:26:50,688 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-29 03:26:50,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 03:26:50,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:26:50,702 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] [2020-10-29 03:26:50,702 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:26:50,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:26:50,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1455593951, now seen corresponding path program 1 times [2020-10-29 03:26:50,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:26:50,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171549285] [2020-10-29 03:26:50,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:26:50,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:51,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:51,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:51,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:51,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:51,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:51,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:51,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:51,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:51,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:51,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:52,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:55,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:55,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 03:26:55,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:26:55,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:26:55,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:55,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:55,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:26:55,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:26:55,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:26:55,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 03:26:56,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:26:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:56,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:56,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:26:56,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:26:56,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:26:56,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 03:26:56,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:26:56,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:26:56,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:26:56,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:26:56,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:26:56,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:26:56,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:26:56,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171549285] [2020-10-29 03:26:56,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:26:56,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:26:56,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233816837] [2020-10-29 03:26:56,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:26:56,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:26:56,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:26:56,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:26:56,235 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 5 states. [2020-10-29 03:26:56,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:26:56,908 INFO L93 Difference]: Finished difference Result 125 states and 191 transitions. [2020-10-29 03:26:56,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:26:56,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-10-29 03:26:56,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:26:56,932 INFO L225 Difference]: With dead ends: 125 [2020-10-29 03:26:56,932 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 03:26:56,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:26:56,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 03:26:57,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 56. [2020-10-29 03:26:57,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 03:26:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-10-29 03:26:57,062 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 33 [2020-10-29 03:26:57,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:26:57,064 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-10-29 03:26:57,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:26:57,065 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-10-29 03:26:57,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 03:26:57,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:26:57,070 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] [2020-10-29 03:26:57,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:26:57,071 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:26:57,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:26:57,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1858982343, now seen corresponding path program 1 times [2020-10-29 03:26:57,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:26:57,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [770803830] [2020-10-29 03:26:57,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:26:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:26:57,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:57,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:57,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:57,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:57,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:57,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:57,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:26:58,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:02,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:02,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 03:27:02,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:27:02,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:27:02,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:02,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:02,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:27:02,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:27:02,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:27:02,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:27:02,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:02,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:02,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:02,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:02,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:02,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:27:02,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:02,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:02,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:02,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:02,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:27:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-29 03:27:02,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [770803830] [2020-10-29 03:27:02,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:02,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:27:02,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081135693] [2020-10-29 03:27:02,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:27:02,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:02,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:27:02,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:27:02,242 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 6 states. [2020-10-29 03:27:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:02,610 INFO L93 Difference]: Finished difference Result 124 states and 154 transitions. [2020-10-29 03:27:02,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:27:02,610 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-10-29 03:27:02,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:02,612 INFO L225 Difference]: With dead ends: 124 [2020-10-29 03:27:02,612 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 03:27:02,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:27:02,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 03:27:02,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-29 03:27:02,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-29 03:27:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2020-10-29 03:27:02,628 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 55 [2020-10-29 03:27:02,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:02,628 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2020-10-29 03:27:02,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:27:02,629 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2020-10-29 03:27:02,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 03:27:02,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:02,632 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:27:02,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:27:02,632 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:02,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:02,633 INFO L82 PathProgramCache]: Analyzing trace with hash 597490525, now seen corresponding path program 2 times [2020-10-29 03:27:02,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:02,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295608483] [2020-10-29 03:27:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:02,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:04,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:05,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:07,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:08,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:08,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 03:27:08,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:27:08,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5664 [2020-10-29 03:27:08,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:08,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:08,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-29 03:27:08,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:27:08,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 03:27:08,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:27:11,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:11,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:11,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:11,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:11,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:11,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:27:11,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:11,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:11,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:11,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:11,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:11,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:27:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:27:11,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295608483] [2020-10-29 03:27:11,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:11,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:27:11,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58297713] [2020-10-29 03:27:11,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:27:11,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:11,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:27:11,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1320, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:27:11,153 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand 38 states. [2020-10-29 03:27:13,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:13,419 INFO L93 Difference]: Finished difference Result 144 states and 163 transitions. [2020-10-29 03:27:13,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:27:13,421 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 77 [2020-10-29 03:27:13,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:13,423 INFO L225 Difference]: With dead ends: 144 [2020-10-29 03:27:13,423 INFO L226 Difference]: Without dead ends: 138 [2020-10-29 03:27:13,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=96, Invalid=1464, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:27:13,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-29 03:27:13,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 131. [2020-10-29 03:27:13,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-29 03:27:13,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 150 transitions. [2020-10-29 03:27:13,447 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 150 transitions. Word has length 77 [2020-10-29 03:27:13,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:13,448 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 150 transitions. [2020-10-29 03:27:13,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:27:13,448 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 150 transitions. [2020-10-29 03:27:13,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 03:27:13,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:13,451 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:27:13,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:27:13,451 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:13,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:13,452 INFO L82 PathProgramCache]: Analyzing trace with hash 578659423, now seen corresponding path program 3 times [2020-10-29 03:27:13,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:13,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120561711] [2020-10-29 03:27:13,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:13,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:13,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:13,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:13,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:13,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:13,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:15,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:18,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:18,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 03:27:18,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:27:18,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 03:27:18,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:18,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:27:18,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:27:18,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:27:18,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:27:18,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:18,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:18,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:18,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:18,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:18,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:27:18,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:18,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:18,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:18,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:18,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:18,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:18,673 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-29 03:27:18,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120561711] [2020-10-29 03:27:18,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:18,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:27:18,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129531738] [2020-10-29 03:27:18,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:27:18,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:18,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:27:18,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:27:18,676 INFO L87 Difference]: Start difference. First operand 131 states and 150 transitions. Second operand 10 states. [2020-10-29 03:27:19,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:19,486 INFO L93 Difference]: Finished difference Result 287 states and 333 transitions. [2020-10-29 03:27:19,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:27:19,493 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-10-29 03:27:19,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:19,495 INFO L225 Difference]: With dead ends: 287 [2020-10-29 03:27:19,495 INFO L226 Difference]: Without dead ends: 165 [2020-10-29 03:27:19,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:27:19,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-29 03:27:19,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 146. [2020-10-29 03:27:19,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-29 03:27:19,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 164 transitions. [2020-10-29 03:27:19,517 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 164 transitions. Word has length 79 [2020-10-29 03:27:19,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:19,517 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 164 transitions. [2020-10-29 03:27:19,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:27:19,517 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 164 transitions. [2020-10-29 03:27:19,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 03:27:19,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:19,519 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:27:19,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:27:19,520 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:19,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:19,520 INFO L82 PathProgramCache]: Analyzing trace with hash 522869665, now seen corresponding path program 4 times [2020-10-29 03:27:19,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:19,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432842830] [2020-10-29 03:27:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:19,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:19,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:19,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:19,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:19,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:19,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:22,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:24,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:24,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 03:27:24,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:27:24,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:27:24,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:24,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:24,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:27:24,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:27:24,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:27:24,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:24,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:24,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:24,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:24,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:24,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:24,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:27:24,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:24,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:24,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:24,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-10-29 03:27:24,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432842830] [2020-10-29 03:27:24,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:24,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:27:24,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758122121] [2020-10-29 03:27:24,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:27:24,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:24,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:27:24,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:27:24,702 INFO L87 Difference]: Start difference. First operand 146 states and 164 transitions. Second operand 10 states. [2020-10-29 03:27:25,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:25,448 INFO L93 Difference]: Finished difference Result 154 states and 172 transitions. [2020-10-29 03:27:25,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:27:25,448 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 81 [2020-10-29 03:27:25,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:25,450 INFO L225 Difference]: With dead ends: 154 [2020-10-29 03:27:25,450 INFO L226 Difference]: Without dead ends: 100 [2020-10-29 03:27:25,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:27:25,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-29 03:27:25,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-29 03:27:25,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-29 03:27:25,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-10-29 03:27:25,467 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 81 [2020-10-29 03:27:25,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:25,467 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-10-29 03:27:25,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:27:25,467 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-10-29 03:27:25,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 03:27:25,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:25,469 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 03:27:25,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:27:25,470 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:25,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:25,470 INFO L82 PathProgramCache]: Analyzing trace with hash 486600819, now seen corresponding path program 5 times [2020-10-29 03:27:25,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:25,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659248559] [2020-10-29 03:27:25,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:25,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:27,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:29,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:31,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:31,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 03:27:31,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:27:31,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5686 [2020-10-29 03:27:31,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:31,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:31,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 64 [2020-10-29 03:27:31,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:27:31,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 03:27:31,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:36,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:36,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:36,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:36,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:36,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:36,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:27:36,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:36,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:36,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:36,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:36,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:36,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 03:27:37,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659248559] [2020-10-29 03:27:37,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:37,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-29 03:27:37,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959710510] [2020-10-29 03:27:37,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-29 03:27:37,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:37,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-29 03:27:37,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=3178, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 03:27:37,043 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 58 states. [2020-10-29 03:27:42,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:42,951 INFO L93 Difference]: Finished difference Result 186 states and 205 transitions. [2020-10-29 03:27:42,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-29 03:27:42,953 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 99 [2020-10-29 03:27:42,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:42,955 INFO L225 Difference]: With dead ends: 186 [2020-10-29 03:27:42,956 INFO L226 Difference]: Without dead ends: 180 [2020-10-29 03:27:42,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 5 SyntacticMatches, 6 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=138, Invalid=3402, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 03:27:42,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-29 03:27:42,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 169. [2020-10-29 03:27:42,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-29 03:27:42,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 188 transitions. [2020-10-29 03:27:42,983 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 188 transitions. Word has length 99 [2020-10-29 03:27:42,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:42,984 INFO L481 AbstractCegarLoop]: Abstraction has 169 states and 188 transitions. [2020-10-29 03:27:42,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-29 03:27:42,985 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 188 transitions. [2020-10-29 03:27:42,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 03:27:42,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:42,988 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 03:27:42,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:27:42,991 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:42,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:42,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1595511819, now seen corresponding path program 6 times [2020-10-29 03:27:42,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:42,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077810942] [2020-10-29 03:27:42,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:43,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:43,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:43,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:43,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:43,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:43,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:46,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:48,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:48,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 03:27:48,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:27:48,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:27:48,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:48,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:48,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:27:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 03:27:48,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:27:48,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:48,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:48,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:48,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:48,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:48,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:48,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:27:48,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:48,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:48,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:48,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:48,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:48,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:27:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 03:27:48,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077810942] [2020-10-29 03:27:48,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:48,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:27:48,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976366653] [2020-10-29 03:27:48,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:27:48,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:48,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:27:48,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:27:48,225 INFO L87 Difference]: Start difference. First operand 169 states and 188 transitions. Second operand 12 states. [2020-10-29 03:27:49,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:49,730 INFO L93 Difference]: Finished difference Result 341 states and 387 transitions. [2020-10-29 03:27:49,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:27:49,731 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2020-10-29 03:27:49,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:49,734 INFO L225 Difference]: With dead ends: 341 [2020-10-29 03:27:49,734 INFO L226 Difference]: Without dead ends: 202 [2020-10-29 03:27:49,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:27:49,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-29 03:27:49,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 187. [2020-10-29 03:27:49,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-29 03:27:49,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 206 transitions. [2020-10-29 03:27:49,773 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 206 transitions. Word has length 101 [2020-10-29 03:27:49,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:49,773 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 206 transitions. [2020-10-29 03:27:49,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:27:49,774 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 206 transitions. [2020-10-29 03:27:49,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 03:27:49,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:49,776 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 03:27:49,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:27:49,777 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:49,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:49,777 INFO L82 PathProgramCache]: Analyzing trace with hash 820422069, now seen corresponding path program 7 times [2020-10-29 03:27:49,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:49,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122726665] [2020-10-29 03:27:49,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:49,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:49,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:49,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:49,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:49,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:49,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:51,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:54,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:54,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 03:27:54,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:27:54,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:27:54,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:54,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:27:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:27:54,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 03:27:54,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:54,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:27:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:54,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:54,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:27:54,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:27:54,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:27:54,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:27:54,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:27:54,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:27:54,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:27:54,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:27:54,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:27:54,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:27:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 03:27:54,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122726665] [2020-10-29 03:27:54,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:27:54,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:27:54,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818713518] [2020-10-29 03:27:54,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:27:54,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:27:54,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:27:54,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:27:54,979 INFO L87 Difference]: Start difference. First operand 187 states and 206 transitions. Second operand 12 states. [2020-10-29 03:27:55,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:27:55,817 INFO L93 Difference]: Finished difference Result 311 states and 340 transitions. [2020-10-29 03:27:55,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:27:55,818 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2020-10-29 03:27:55,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:27:55,820 INFO L225 Difference]: With dead ends: 311 [2020-10-29 03:27:55,820 INFO L226 Difference]: Without dead ends: 133 [2020-10-29 03:27:55,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:27:55,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-29 03:27:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 122. [2020-10-29 03:27:55,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-29 03:27:55,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 132 transitions. [2020-10-29 03:27:55,845 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 132 transitions. Word has length 101 [2020-10-29 03:27:55,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:27:55,847 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 132 transitions. [2020-10-29 03:27:55,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:27:55,847 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 132 transitions. [2020-10-29 03:27:55,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 03:27:55,854 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:27:55,855 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-29 03:27:55,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:27:55,855 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:27:55,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:27:55,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1822158583, now seen corresponding path program 8 times [2020-10-29 03:27:55,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:27:55,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724587348] [2020-10-29 03:27:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:27:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:27:56,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:27:58,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:01,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:01,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 03:28:01,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:28:01,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-29 03:28:01,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:01,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 88 [2020-10-29 03:28:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:28:01,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 03:28:01,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:10,702 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-10-29 03:28:11,050 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2020-10-29 03:28:12,002 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-29 03:28:19,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:28:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:28:19,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:28:19,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:28:19,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:28:19,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:28:19,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:28:19,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:28:19,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:28:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:28:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:28:19,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:28:19,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:28:19,815 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 160 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 03:28:19,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724587348] [2020-10-29 03:28:19,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:28:19,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88] total 88 [2020-10-29 03:28:19,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849227992] [2020-10-29 03:28:19,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-10-29 03:28:19,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:28:19,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-10-29 03:28:19,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=7420, Unknown=0, NotChecked=0, Total=7656 [2020-10-29 03:28:19,821 INFO L87 Difference]: Start difference. First operand 122 states and 132 transitions. Second operand 88 states. [2020-10-29 03:28:21,519 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2020-10-29 03:28:23,533 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2020-10-29 03:28:25,818 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 03:28:26,462 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2020-10-29 03:28:28,901 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2020-10-29 03:28:31,549 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2020-10-29 03:28:33,574 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2020-10-29 03:28:34,231 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2020-10-29 03:28:34,644 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2020-10-29 03:28:35,362 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 88 [2020-10-29 03:28:36,199 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2020-10-29 03:28:36,496 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2020-10-29 03:28:37,457 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2020-10-29 03:28:38,170 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2020-10-29 03:28:38,774 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-29 03:28:39,374 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 61 [2020-10-29 03:28:41,098 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 03:28:41,645 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2020-10-29 03:28:42,318 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 87 [2020-10-29 03:28:42,760 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2020-10-29 03:28:43,645 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 85 [2020-10-29 03:28:44,236 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2020-10-29 03:28:45,382 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 73 [2020-10-29 03:28:46,126 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 51 [2020-10-29 03:28:47,241 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2020-10-29 03:28:49,052 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 73 [2020-10-29 03:28:50,311 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-10-29 03:28:50,826 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 03:28:52,163 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-29 03:28:53,688 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2020-10-29 03:28:54,498 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 03:28:54,991 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2020-10-29 03:28:56,223 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2020-10-29 03:28:56,746 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-10-29 03:28:57,300 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-29 03:28:57,763 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2020-10-29 03:28:59,121 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 03:28:59,804 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 67 [2020-10-29 03:29:00,670 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 44 [2020-10-29 03:29:01,871 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-10-29 03:29:02,338 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-29 03:29:03,747 WARN L193 SmtUtils]: Spent 671.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 77 [2020-10-29 03:29:05,255 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 58 [2020-10-29 03:29:05,716 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 03:29:06,537 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-29 03:29:08,386 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 03:29:10,390 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 03:29:12,135 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-10-29 03:29:13,006 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-29 03:29:14,201 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 65 [2020-10-29 03:29:15,128 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2020-10-29 03:29:19,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:29:19,081 INFO L93 Difference]: Finished difference Result 298 states and 326 transitions. [2020-10-29 03:29:19,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2020-10-29 03:29:19,083 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 121 [2020-10-29 03:29:19,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:29:19,086 INFO L225 Difference]: With dead ends: 298 [2020-10-29 03:29:19,086 INFO L226 Difference]: Without dead ends: 291 [2020-10-29 03:29:19,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7059 ImplicationChecksByTransitivity, 51.0s TimeCoverageRelationStatistics Valid=1216, Invalid=32824, Unknown=0, NotChecked=0, Total=34040 [2020-10-29 03:29:19,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-29 03:29:19,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 211. [2020-10-29 03:29:19,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-29 03:29:19,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 232 transitions. [2020-10-29 03:29:19,122 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 232 transitions. Word has length 121 [2020-10-29 03:29:19,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:29:19,123 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 232 transitions. [2020-10-29 03:29:19,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-10-29 03:29:19,123 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 232 transitions. [2020-10-29 03:29:19,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 03:29:19,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:29:19,126 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-29 03:29:19,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:29:19,126 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:29:19,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:29:19,127 INFO L82 PathProgramCache]: Analyzing trace with hash 453082891, now seen corresponding path program 9 times [2020-10-29 03:29:19,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:29:19,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431672518] [2020-10-29 03:29:19,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:29:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:19,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:19,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:19,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:19,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:19,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:19,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:24,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:24,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 03:29:24,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:29:24,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:29:24,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:24,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:24,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:29:24,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 03:29:24,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:29:24,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:24,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:29:24,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:24,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:24,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:24,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:29:24,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:24,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:29:24,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:24,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:24,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:29:24,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:24,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:29:24,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:24,494 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-29 03:29:24,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431672518] [2020-10-29 03:29:24,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:29:24,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:29:24,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547687219] [2020-10-29 03:29:24,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:29:24,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:29:24,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:29:24,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:29:24,497 INFO L87 Difference]: Start difference. First operand 211 states and 232 transitions. Second operand 14 states. [2020-10-29 03:29:26,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:29:26,810 INFO L93 Difference]: Finished difference Result 466 states and 516 transitions. [2020-10-29 03:29:26,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:29:26,812 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 123 [2020-10-29 03:29:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:29:26,815 INFO L225 Difference]: With dead ends: 466 [2020-10-29 03:29:26,815 INFO L226 Difference]: Without dead ends: 241 [2020-10-29 03:29:26,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:29:26,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-29 03:29:26,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 222. [2020-10-29 03:29:26,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-29 03:29:26,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 240 transitions. [2020-10-29 03:29:26,837 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 240 transitions. Word has length 123 [2020-10-29 03:29:26,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:29:26,837 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 240 transitions. [2020-10-29 03:29:26,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:29:26,837 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 240 transitions. [2020-10-29 03:29:26,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 03:29:26,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:29:26,839 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-29 03:29:26,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:29:26,840 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:29:26,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:29:26,840 INFO L82 PathProgramCache]: Analyzing trace with hash 163789645, now seen corresponding path program 10 times [2020-10-29 03:29:26,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:29:26,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578489665] [2020-10-29 03:29:26,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:29:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:26,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:26,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:26,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:27,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:27,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:27,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:31,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:31,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-29 03:29:31,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:29:31,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 03:29:31,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:31,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:31,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:29:31,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 03:29:31,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:29:31,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:32,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:29:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:32,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:32,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:32,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:29:32,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:32,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:29:32,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:32,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:32,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:29:32,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:29:32,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:29:32,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:32,313 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-29 03:29:32,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578489665] [2020-10-29 03:29:32,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:29:32,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:29:32,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880757981] [2020-10-29 03:29:32,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:29:32,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:29:32,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:29:32,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:29:32,319 INFO L87 Difference]: Start difference. First operand 222 states and 240 transitions. Second operand 14 states. [2020-10-29 03:29:34,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:29:34,357 INFO L93 Difference]: Finished difference Result 230 states and 248 transitions. [2020-10-29 03:29:34,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:29:34,360 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 125 [2020-10-29 03:29:34,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:29:34,361 INFO L225 Difference]: With dead ends: 230 [2020-10-29 03:29:34,361 INFO L226 Difference]: Without dead ends: 144 [2020-10-29 03:29:34,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:29:34,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-29 03:29:34,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-10-29 03:29:34,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-29 03:29:34,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 154 transitions. [2020-10-29 03:29:34,376 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 154 transitions. Word has length 125 [2020-10-29 03:29:34,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:29:34,376 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 154 transitions. [2020-10-29 03:29:34,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:29:34,377 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 154 transitions. [2020-10-29 03:29:34,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-29 03:29:34,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:29:34,378 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2020-10-29 03:29:34,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:29:34,379 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:29:34,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:29:34,379 INFO L82 PathProgramCache]: Analyzing trace with hash 858307871, now seen corresponding path program 11 times [2020-10-29 03:29:34,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:29:34,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220812156] [2020-10-29 03:29:34,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:29:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:29:34,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:29:39,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:29:39,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 03:29:39,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:29:39,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 03:29:39,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:29:39,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:29:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 111 [2020-10-29 03:29:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:29:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 03:29:39,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:29:44,666 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 44 [2020-10-29 03:29:44,922 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-10-29 03:29:45,454 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-10-29 03:29:46,896 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-10-29 03:29:47,282 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-29 03:29:47,678 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-10-29 03:29:50,482 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-29 03:29:50,888 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-29 03:30:21,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:30:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:30:21,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:30:21,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:30:21,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:30:21,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:30:21,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:30:21,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:30:21,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:30:21,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:30:21,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:30:21,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:30:21,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:30:21,790 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:30:21,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220812156] [2020-10-29 03:30:21,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:30:21,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113] total 113 [2020-10-29 03:30:21,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035718797] [2020-10-29 03:30:21,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 113 states [2020-10-29 03:30:21,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:30:21,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2020-10-29 03:30:21,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=388, Invalid=12268, Unknown=0, NotChecked=0, Total=12656 [2020-10-29 03:30:21,797 INFO L87 Difference]: Start difference. First operand 144 states and 154 transitions. Second operand 113 states.