/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:05:28,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:05:28,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:05:28,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:05:28,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:05:28,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:05:28,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:05:28,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:05:28,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:05:28,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:05:28,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:05:28,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:05:28,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:05:28,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:05:28,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:05:28,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:05:28,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:05:28,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:05:29,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:05:29,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:05:29,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:05:29,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:05:29,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:05:29,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:05:29,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:05:29,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:05:29,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:05:29,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:05:29,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:05:29,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:05:29,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:05:29,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:05:29,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:05:29,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:05:29,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:05:29,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:05:29,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:05:29,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:05:29,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:05:29,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:05:29,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:05:29,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:05:29,049 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:05:29,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:05:29,051 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:05:29,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:05:29,052 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:05:29,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:05:29,052 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:05:29,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:05:29,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:05:29,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:05:29,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:05:29,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:05:29,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:05:29,053 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:05:29,054 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:05:29,054 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:05:29,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:05:29,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:05:29,055 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:05:29,055 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:05:29,055 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:05:29,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:05:29,055 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:05:29,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:05:29,056 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:05:29,056 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:05:29,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:05:29,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:05:29,057 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:05:29,057 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:05:29,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:05:29,565 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:05:29,570 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:05:29,572 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:05:29,572 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:05:29,573 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 10:05:29,659 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4665d9ae/027be037a26a4dff93b6767ccb7e4f50/FLAG974101050 [2020-09-25 10:05:30,414 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:05:30,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-09-25 10:05:30,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4665d9ae/027be037a26a4dff93b6767ccb7e4f50/FLAG974101050 [2020-09-25 10:05:30,615 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f4665d9ae/027be037a26a4dff93b6767ccb7e4f50 [2020-09-25 10:05:30,631 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:05:30,638 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:05:30,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:30,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:05:30,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:05:30,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:30" (1/1) ... [2020-09-25 10:05:30,653 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2859c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:30, skipping insertion in model container [2020-09-25 10:05:30,653 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:05:30" (1/1) ... [2020-09-25 10:05:30,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:05:30,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:05:31,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:31,250 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:05:31,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:05:31,361 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:05:31,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:31 WrapperNode [2020-09-25 10:05:31,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:05:31,362 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:05:31,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:05:31,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:05:31,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:31" (1/1) ... [2020-09-25 10:05:31,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:31" (1/1) ... [2020-09-25 10:05:31,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:31" (1/1) ... [2020-09-25 10:05:31,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:31" (1/1) ... [2020-09-25 10:05:31,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:31" (1/1) ... [2020-09-25 10:05:31,439 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:31" (1/1) ... [2020-09-25 10:05:31,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:31" (1/1) ... [2020-09-25 10:05:31,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:05:31,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:05:31,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:05:31,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:05:31,456 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:05:31,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:05:31,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:05:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 10:05:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 10:05:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 10:05:31,530 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:05:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:05:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:05:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 10:05:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 10:05:31,533 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 10:05:31,533 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 10:05:31,533 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 10:05:31,534 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 10:05:31,534 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 10:05:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 10:05:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 10:05:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 10:05:31,535 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 10:05:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 10:05:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 10:05:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 10:05:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 10:05:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 10:05:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 10:05:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 10:05:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 10:05:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 10:05:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 10:05:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 10:05:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 10:05:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 10:05:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 10:05:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 10:05:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 10:05:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 10:05:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 10:05:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 10:05:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 10:05:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 10:05:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 10:05:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 10:05:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 10:05:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 10:05:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 10:05:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 10:05:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 10:05:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 10:05:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 10:05:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 10:05:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 10:05:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 10:05:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 10:05:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 10:05:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 10:05:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 10:05:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 10:05:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 10:05:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 10:05:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 10:05:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 10:05:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 10:05:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 10:05:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 10:05:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 10:05:31,548 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 10:05:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 10:05:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 10:05:31,549 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 10:05:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 10:05:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 10:05:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 10:05:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 10:05:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:05:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 10:05:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 10:05:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 10:05:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 10:05:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 10:05:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 10:05:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 10:05:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 10:05:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 10:05:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 10:05:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 10:05:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 10:05:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 10:05:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 10:05:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 10:05:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 10:05:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 10:05:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 10:05:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 10:05:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 10:05:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 10:05:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 10:05:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 10:05:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 10:05:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 10:05:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 10:05:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 10:05:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 10:05:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 10:05:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 10:05:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 10:05:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 10:05:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 10:05:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 10:05:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 10:05:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 10:05:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 10:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 10:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 10:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 10:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 10:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 10:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 10:05:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 10:05:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 10:05:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 10:05:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:05:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:05:31,897 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 10:05:32,351 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:05:32,352 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-25 10:05:32,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:32 BoogieIcfgContainer [2020-09-25 10:05:32,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:05:32,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:05:32,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:05:32,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:05:32,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:05:30" (1/3) ... [2020-09-25 10:05:32,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbca483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:32, skipping insertion in model container [2020-09-25 10:05:32,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:05:31" (2/3) ... [2020-09-25 10:05:32,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbca483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:05:32, skipping insertion in model container [2020-09-25 10:05:32,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:05:32" (3/3) ... [2020-09-25 10:05:32,373 INFO L109 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2020-09-25 10:05:32,387 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:05:32,399 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:05:32,422 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:05:32,452 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:05:32,452 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:05:32,452 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:05:32,452 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:05:32,452 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:05:32,453 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:05:32,453 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:05:32,453 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:05:32,485 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-09-25 10:05:32,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 10:05:32,498 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:32,500 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] [2020-09-25 10:05:32,500 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:32,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:32,507 INFO L82 PathProgramCache]: Analyzing trace with hash -652445128, now seen corresponding path program 1 times [2020-09-25 10:05:32,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:32,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108841045] [2020-09-25 10:05:32,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:32,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:32,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:32,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:32,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:32,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:33,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:33,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:33,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:33,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:33,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 10:05:33,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:05:33,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 846 [2020-09-25 10:05:33,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:33,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 10:05:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 10:05:33,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 10:05:33,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 10:05:33,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:33,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:33,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:33,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:33,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:33,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 10:05:33,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:33,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:33,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:33,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:05:33,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108841045] [2020-09-25 10:05:33,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:33,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 10:05:33,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049546845] [2020-09-25 10:05:33,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:05:33,655 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:33,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:05:33,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:05:33,677 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 5 states. [2020-09-25 10:05:34,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:34,254 INFO L93 Difference]: Finished difference Result 377 states and 443 transitions. [2020-09-25 10:05:34,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:05:34,256 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-25 10:05:34,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:34,276 INFO L225 Difference]: With dead ends: 377 [2020-09-25 10:05:34,277 INFO L226 Difference]: Without dead ends: 201 [2020-09-25 10:05:34,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:05:34,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-09-25 10:05:34,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2020-09-25 10:05:34,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 10:05:34,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 222 transitions. [2020-09-25 10:05:34,368 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 222 transitions. Word has length 31 [2020-09-25 10:05:34,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:34,369 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 222 transitions. [2020-09-25 10:05:34,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:05:34,370 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 222 transitions. [2020-09-25 10:05:34,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 10:05:34,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:34,374 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] [2020-09-25 10:05:34,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:05:34,375 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:34,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:34,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1870874818, now seen corresponding path program 1 times [2020-09-25 10:05:34,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:34,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373349314] [2020-09-25 10:05:34,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:34,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:34,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:34,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:35,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:35,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 10:05:35,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:05:35,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-09-25 10:05:35,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:35,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:35,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:05:35,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 10:05:35,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 10:05:35,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:35,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:35,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:35,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:35,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:35,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:35,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:35,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 10:05:35,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:35,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:35,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:35,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:35,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:35,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:05:35,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373349314] [2020-09-25 10:05:35,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:35,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:05:35,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883084571] [2020-09-25 10:05:35,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:05:35,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:35,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:05:35,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:05:35,549 INFO L87 Difference]: Start difference. First operand 200 states and 222 transitions. Second operand 7 states. [2020-09-25 10:05:36,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:36,143 INFO L93 Difference]: Finished difference Result 277 states and 304 transitions. [2020-09-25 10:05:36,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:05:36,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-09-25 10:05:36,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:36,147 INFO L225 Difference]: With dead ends: 277 [2020-09-25 10:05:36,147 INFO L226 Difference]: Without dead ends: 271 [2020-09-25 10:05:36,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:05:36,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-09-25 10:05:36,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 213. [2020-09-25 10:05:36,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-25 10:05:36,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 238 transitions. [2020-09-25 10:05:36,164 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 238 transitions. Word has length 54 [2020-09-25 10:05:36,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:36,165 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 238 transitions. [2020-09-25 10:05:36,165 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:05:36,165 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 238 transitions. [2020-09-25 10:05:36,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 10:05:36,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:36,168 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:36,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:05:36,169 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:36,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:36,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1812282598, now seen corresponding path program 1 times [2020-09-25 10:05:36,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:36,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460680088] [2020-09-25 10:05:36,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:36,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:36,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:36,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:37,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:37,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 10:05:37,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:05:37,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1276 [2020-09-25 10:05:37,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:37,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:37,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:05:37,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 10:05:37,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 10:05:37,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:37,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:37,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:37,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:37,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:37,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:37,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:37,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:05:37,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:37,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:37,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:37,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:37,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:05:37,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460680088] [2020-09-25 10:05:37,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:37,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:05:37,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024738084] [2020-09-25 10:05:37,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:05:37,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:37,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:05:37,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:05:37,562 INFO L87 Difference]: Start difference. First operand 213 states and 238 transitions. Second operand 7 states. [2020-09-25 10:05:38,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:38,134 INFO L93 Difference]: Finished difference Result 280 states and 307 transitions. [2020-09-25 10:05:38,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:05:38,135 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-09-25 10:05:38,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:38,138 INFO L225 Difference]: With dead ends: 280 [2020-09-25 10:05:38,138 INFO L226 Difference]: Without dead ends: 265 [2020-09-25 10:05:38,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:05:38,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-25 10:05:38,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 210. [2020-09-25 10:05:38,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-09-25 10:05:38,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 234 transitions. [2020-09-25 10:05:38,153 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 234 transitions. Word has length 60 [2020-09-25 10:05:38,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:38,154 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 234 transitions. [2020-09-25 10:05:38,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:05:38,154 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 234 transitions. [2020-09-25 10:05:38,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 10:05:38,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:38,157 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:38,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:05:38,157 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:38,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:38,158 INFO L82 PathProgramCache]: Analyzing trace with hash -775600822, now seen corresponding path program 1 times [2020-09-25 10:05:38,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:38,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194957360] [2020-09-25 10:05:38,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:38,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:38,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:38,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:39,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:39,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-25 10:05:39,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 10:05:39,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1178 [2020-09-25 10:05:39,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:39,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:39,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:05:39,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 10:05:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:05:39,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:39,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:39,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:39,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:39,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:39,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:39,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:05:39,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:39,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:39,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:39,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:39,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:39,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 10:05:39,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194957360] [2020-09-25 10:05:39,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:39,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:05:39,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980240221] [2020-09-25 10:05:39,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:05:39,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:39,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:05:39,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:05:39,523 INFO L87 Difference]: Start difference. First operand 210 states and 234 transitions. Second operand 7 states. [2020-09-25 10:05:40,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:40,264 INFO L93 Difference]: Finished difference Result 550 states and 620 transitions. [2020-09-25 10:05:40,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 10:05:40,264 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-09-25 10:05:40,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:40,267 INFO L225 Difference]: With dead ends: 550 [2020-09-25 10:05:40,267 INFO L226 Difference]: Without dead ends: 421 [2020-09-25 10:05:40,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-09-25 10:05:40,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-09-25 10:05:40,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 294. [2020-09-25 10:05:40,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-09-25 10:05:40,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 331 transitions. [2020-09-25 10:05:40,299 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 331 transitions. Word has length 60 [2020-09-25 10:05:40,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:40,300 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 331 transitions. [2020-09-25 10:05:40,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:05:40,300 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 331 transitions. [2020-09-25 10:05:40,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-09-25 10:05:40,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:40,304 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:40,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:05:40,308 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:40,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:40,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1629716359, now seen corresponding path program 1 times [2020-09-25 10:05:40,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:40,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1657439126] [2020-09-25 10:05:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:40,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:40,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:40,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 10:05:40,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:40,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 10:05:40,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:40,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 10:05:40,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 10:05:40,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 10:05:40,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:40,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:40,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:40,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:40,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:40,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:40,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 10:05:40,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:40,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:40,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:40,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:40,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:40,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:40,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:05:40,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1657439126] [2020-09-25 10:05:40,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:05:40,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 10:05:40,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933893438] [2020-09-25 10:05:40,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 10:05:40,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:40,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 10:05:40,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 10:05:40,641 INFO L87 Difference]: Start difference. First operand 294 states and 331 transitions. Second operand 7 states. [2020-09-25 10:05:41,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:41,059 INFO L93 Difference]: Finished difference Result 346 states and 385 transitions. [2020-09-25 10:05:41,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 10:05:41,060 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-09-25 10:05:41,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:41,062 INFO L225 Difference]: With dead ends: 346 [2020-09-25 10:05:41,062 INFO L226 Difference]: Without dead ends: 322 [2020-09-25 10:05:41,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 10:05:41,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-09-25 10:05:41,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 289. [2020-09-25 10:05:41,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-09-25 10:05:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 325 transitions. [2020-09-25 10:05:41,086 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 325 transitions. Word has length 62 [2020-09-25 10:05:41,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:41,087 INFO L479 AbstractCegarLoop]: Abstraction has 289 states and 325 transitions. [2020-09-25 10:05:41,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 10:05:41,087 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 325 transitions. [2020-09-25 10:05:41,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 10:05:41,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:41,089 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:41,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 10:05:41,090 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:41,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:41,090 INFO L82 PathProgramCache]: Analyzing trace with hash 852438762, now seen corresponding path program 1 times [2020-09-25 10:05:41,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:41,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924756247] [2020-09-25 10:05:41,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:41,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:41,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:42,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:42,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 10:05:42,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:42,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1490 [2020-09-25 10:05:42,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:42,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:42,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:05:42,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 10:05:42,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:05:42,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:42,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:42,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:42,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:42,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:42,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:42,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:05:42,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:42,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:42,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:42,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:42,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:42,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:05:42,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924756247] [2020-09-25 10:05:42,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:42,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:05:42,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523939977] [2020-09-25 10:05:42,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:05:42,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:42,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:05:42,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:05:42,802 INFO L87 Difference]: Start difference. First operand 289 states and 325 transitions. Second operand 11 states. [2020-09-25 10:05:43,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:43,479 INFO L93 Difference]: Finished difference Result 370 states and 410 transitions. [2020-09-25 10:05:43,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:05:43,480 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 10:05:43,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:43,482 INFO L225 Difference]: With dead ends: 370 [2020-09-25 10:05:43,482 INFO L226 Difference]: Without dead ends: 364 [2020-09-25 10:05:43,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:05:43,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-09-25 10:05:43,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 308. [2020-09-25 10:05:43,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-09-25 10:05:43,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 346 transitions. [2020-09-25 10:05:43,494 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 346 transitions. Word has length 67 [2020-09-25 10:05:43,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:43,494 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 346 transitions. [2020-09-25 10:05:43,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:05:43,495 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 346 transitions. [2020-09-25 10:05:43,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 10:05:43,496 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:43,496 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:43,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 10:05:43,497 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:43,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:43,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1742912072, now seen corresponding path program 1 times [2020-09-25 10:05:43,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:43,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [457706610] [2020-09-25 10:05:43,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:43,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:43,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:43,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:44,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:44,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 10:05:44,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:44,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 965 [2020-09-25 10:05:44,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:44,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:05:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 10:05:44,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 10:05:44,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:44,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:44,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:44,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:44,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:44,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:44,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:05:44,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:44,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:44,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:44,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:44,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:44,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:05:44,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [457706610] [2020-09-25 10:05:44,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:44,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 10:05:44,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117688469] [2020-09-25 10:05:44,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 10:05:44,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:44,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 10:05:44,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-25 10:05:44,628 INFO L87 Difference]: Start difference. First operand 308 states and 346 transitions. Second operand 11 states. [2020-09-25 10:05:45,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:45,352 INFO L93 Difference]: Finished difference Result 386 states and 429 transitions. [2020-09-25 10:05:45,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 10:05:45,353 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 10:05:45,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:45,356 INFO L225 Difference]: With dead ends: 386 [2020-09-25 10:05:45,356 INFO L226 Difference]: Without dead ends: 380 [2020-09-25 10:05:45,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-09-25 10:05:45,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-09-25 10:05:45,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 320. [2020-09-25 10:05:45,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-09-25 10:05:45,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 359 transitions. [2020-09-25 10:05:45,368 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 359 transitions. Word has length 67 [2020-09-25 10:05:45,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:45,368 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 359 transitions. [2020-09-25 10:05:45,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 10:05:45,368 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 359 transitions. [2020-09-25 10:05:45,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 10:05:45,370 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:45,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:45,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 10:05:45,371 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:45,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:45,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1875154110, now seen corresponding path program 1 times [2020-09-25 10:05:45,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:45,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535134115] [2020-09-25 10:05:45,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:45,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:45,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:46,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:47,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:49,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:49,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 10:05:49,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 10:05:49,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3714 [2020-09-25 10:05:49,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:49,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:49,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:05:49,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 10:05:49,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:05:49,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:05:49,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:49,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:49,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:49,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:49,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:49,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:05:49,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:49,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:49,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:05:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:05:49,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535134115] [2020-09-25 10:05:49,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:49,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 10:05:49,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514057837] [2020-09-25 10:05:49,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 10:05:49,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:49,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 10:05:49,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:05:49,446 INFO L87 Difference]: Start difference. First operand 320 states and 359 transitions. Second operand 16 states. [2020-09-25 10:05:50,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:50,963 INFO L93 Difference]: Finished difference Result 392 states and 435 transitions. [2020-09-25 10:05:50,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 10:05:50,964 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-25 10:05:50,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:50,966 INFO L225 Difference]: With dead ends: 392 [2020-09-25 10:05:50,966 INFO L226 Difference]: Without dead ends: 386 [2020-09-25 10:05:50,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 10:05:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-09-25 10:05:50,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 334. [2020-09-25 10:05:50,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-09-25 10:05:50,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 375 transitions. [2020-09-25 10:05:50,977 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 375 transitions. Word has length 73 [2020-09-25 10:05:50,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:50,978 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 375 transitions. [2020-09-25 10:05:50,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 10:05:50,978 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 375 transitions. [2020-09-25 10:05:50,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 10:05:50,979 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:50,980 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:50,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 10:05:50,980 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:50,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:50,980 INFO L82 PathProgramCache]: Analyzing trace with hash -838472334, now seen corresponding path program 1 times [2020-09-25 10:05:50,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:50,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498758914] [2020-09-25 10:05:50,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:51,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:51,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 10:05:51,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:51,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 737 [2020-09-25 10:05:51,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:51,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:05:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 10:05:51,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:05:51,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:51,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:51,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:51,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:51,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:51,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:51,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:51,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:05:51,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:51,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:51,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:51,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:51,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:51,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:05:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:05:52,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498758914] [2020-09-25 10:05:52,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:52,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 10:05:52,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434397322] [2020-09-25 10:05:52,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 10:05:52,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:52,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 10:05:52,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:05:52,002 INFO L87 Difference]: Start difference. First operand 334 states and 375 transitions. Second operand 16 states. [2020-09-25 10:05:53,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:53,416 INFO L93 Difference]: Finished difference Result 401 states and 445 transitions. [2020-09-25 10:05:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 10:05:53,416 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-25 10:05:53,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:53,419 INFO L225 Difference]: With dead ends: 401 [2020-09-25 10:05:53,419 INFO L226 Difference]: Without dead ends: 395 [2020-09-25 10:05:53,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 10:05:53,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-09-25 10:05:53,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 338. [2020-09-25 10:05:53,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-09-25 10:05:53,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 379 transitions. [2020-09-25 10:05:53,433 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 379 transitions. Word has length 73 [2020-09-25 10:05:53,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:53,433 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 379 transitions. [2020-09-25 10:05:53,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 10:05:53,433 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 379 transitions. [2020-09-25 10:05:53,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 10:05:53,435 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:53,435 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:53,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 10:05:53,435 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:53,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:53,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1654345840, now seen corresponding path program 1 times [2020-09-25 10:05:53,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:53,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785901589] [2020-09-25 10:05:53,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:53,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:54,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:54,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 10:05:54,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:54,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 697 [2020-09-25 10:05:54,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:54,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:54,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:05:54,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 10:05:54,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:05:54,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:54,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:54,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:54,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:54,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:54,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:54,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 10:05:54,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:54,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:54,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:54,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:54,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:54,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:05:54,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:05:54,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785901589] [2020-09-25 10:05:54,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:54,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 10:05:54,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500530119] [2020-09-25 10:05:54,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 10:05:54,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:54,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 10:05:54,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:05:54,476 INFO L87 Difference]: Start difference. First operand 338 states and 379 transitions. Second operand 16 states. [2020-09-25 10:05:56,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:56,123 INFO L93 Difference]: Finished difference Result 413 states and 457 transitions. [2020-09-25 10:05:56,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 10:05:56,124 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-25 10:05:56,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:56,126 INFO L225 Difference]: With dead ends: 413 [2020-09-25 10:05:56,126 INFO L226 Difference]: Without dead ends: 407 [2020-09-25 10:05:56,127 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2020-09-25 10:05:56,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-09-25 10:05:56,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 340. [2020-09-25 10:05:56,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-09-25 10:05:56,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 382 transitions. [2020-09-25 10:05:56,140 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 382 transitions. Word has length 73 [2020-09-25 10:05:56,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:56,140 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 382 transitions. [2020-09-25 10:05:56,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 10:05:56,141 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 382 transitions. [2020-09-25 10:05:56,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 10:05:56,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:56,142 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:56,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 10:05:56,143 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:56,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:56,143 INFO L82 PathProgramCache]: Analyzing trace with hash -617664064, now seen corresponding path program 1 times [2020-09-25 10:05:56,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:56,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833043894] [2020-09-25 10:05:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:56,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:56,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:57,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:57,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 10:05:57,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:05:57,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1212 [2020-09-25 10:05:57,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:57,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:05:57,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 10:05:57,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 10:05:57,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:57,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:05:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:57,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:57,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:05:57,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:05:57,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:05:57,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:05:57,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:05:57,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:05:57,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:05:57,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:05:57,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:05:57,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:05:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:05:57,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833043894] [2020-09-25 10:05:57,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:05:57,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 10:05:57,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387856042] [2020-09-25 10:05:57,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 10:05:57,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:05:57,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 10:05:57,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:05:57,799 INFO L87 Difference]: Start difference. First operand 340 states and 382 transitions. Second operand 16 states. [2020-09-25 10:05:59,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:05:59,535 INFO L93 Difference]: Finished difference Result 418 states and 463 transitions. [2020-09-25 10:05:59,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 10:05:59,536 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-09-25 10:05:59,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:05:59,539 INFO L225 Difference]: With dead ends: 418 [2020-09-25 10:05:59,539 INFO L226 Difference]: Without dead ends: 412 [2020-09-25 10:05:59,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2020-09-25 10:05:59,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-09-25 10:05:59,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 333. [2020-09-25 10:05:59,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-09-25 10:05:59,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 373 transitions. [2020-09-25 10:05:59,552 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 373 transitions. Word has length 73 [2020-09-25 10:05:59,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:05:59,553 INFO L479 AbstractCegarLoop]: Abstraction has 333 states and 373 transitions. [2020-09-25 10:05:59,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 10:05:59,553 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 373 transitions. [2020-09-25 10:05:59,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 10:05:59,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:05:59,554 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:05:59,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 10:05:59,555 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:05:59,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:05:59,555 INFO L82 PathProgramCache]: Analyzing trace with hash 342604767, now seen corresponding path program 2 times [2020-09-25 10:05:59,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:05:59,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495853212] [2020-09-25 10:05:59,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:05:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:05:59,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:05:59,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:02,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:02,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:06:02,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:02,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2438 [2020-09-25 10:06:02,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:02,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:02,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:06:02,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 10:06:02,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 10:06:02,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:02,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:02,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:02,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:02,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:02,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:02,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:06:02,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:02,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:02,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:02,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:02,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:02,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:06:02,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495853212] [2020-09-25 10:06:02,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:02,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 10:06:02,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374405631] [2020-09-25 10:06:02,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 10:06:02,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:02,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 10:06:02,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 10:06:02,349 INFO L87 Difference]: Start difference. First operand 333 states and 373 transitions. Second operand 18 states. [2020-09-25 10:06:04,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:04,065 INFO L93 Difference]: Finished difference Result 459 states and 508 transitions. [2020-09-25 10:06:04,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 10:06:04,066 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-09-25 10:06:04,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:04,069 INFO L225 Difference]: With dead ends: 459 [2020-09-25 10:06:04,070 INFO L226 Difference]: Without dead ends: 435 [2020-09-25 10:06:04,072 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 10:06:04,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-09-25 10:06:04,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 354. [2020-09-25 10:06:04,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-09-25 10:06:04,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 396 transitions. [2020-09-25 10:06:04,119 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 396 transitions. Word has length 78 [2020-09-25 10:06:04,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:04,122 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 396 transitions. [2020-09-25 10:06:04,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 10:06:04,122 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 396 transitions. [2020-09-25 10:06:04,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 10:06:04,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:04,125 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:04,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 10:06:04,126 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:04,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:04,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1736898641, now seen corresponding path program 1 times [2020-09-25 10:06:04,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:04,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144154601] [2020-09-25 10:06:04,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:04,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:04,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:07,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:07,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 10:06:07,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:07,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3186 [2020-09-25 10:06:07,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:07,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:07,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 10:06:07,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 10:06:07,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 10:06:07,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:07,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:07,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:07,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:07,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:07,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:07,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:06:07,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:07,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:07,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:07,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:07,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:07,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:06:07,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144154601] [2020-09-25 10:06:07,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:07,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 10:06:07,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299865566] [2020-09-25 10:06:07,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 10:06:07,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:07,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 10:06:07,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2020-09-25 10:06:07,713 INFO L87 Difference]: Start difference. First operand 354 states and 396 transitions. Second operand 18 states. [2020-09-25 10:06:09,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:09,453 INFO L93 Difference]: Finished difference Result 474 states and 524 transitions. [2020-09-25 10:06:09,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 10:06:09,454 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-09-25 10:06:09,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:09,458 INFO L225 Difference]: With dead ends: 474 [2020-09-25 10:06:09,458 INFO L226 Difference]: Without dead ends: 468 [2020-09-25 10:06:09,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 10:06:09,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-09-25 10:06:09,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 366. [2020-09-25 10:06:09,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-09-25 10:06:09,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 409 transitions. [2020-09-25 10:06:09,474 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 409 transitions. Word has length 78 [2020-09-25 10:06:09,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:09,474 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 409 transitions. [2020-09-25 10:06:09,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 10:06:09,474 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 409 transitions. [2020-09-25 10:06:09,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 10:06:09,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:09,476 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:09,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 10:06:09,476 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:09,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:09,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1698374602, now seen corresponding path program 1 times [2020-09-25 10:06:09,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:09,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139712259] [2020-09-25 10:06:09,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:09,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:10,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:10,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 10:06:10,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:10,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-09-25 10:06:10,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:10,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:06:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 10:06:10,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 10:06:10,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:10,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:10,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:10,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:10,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:10,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 10:06:10,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:10,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:10,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:10,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:10,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:10,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:06:10,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139712259] [2020-09-25 10:06:10,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:10,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 10:06:10,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826311763] [2020-09-25 10:06:10,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 10:06:10,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:10,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 10:06:10,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:06:10,397 INFO L87 Difference]: Start difference. First operand 366 states and 409 transitions. Second operand 16 states. [2020-09-25 10:06:11,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:11,893 INFO L93 Difference]: Finished difference Result 439 states and 486 transitions. [2020-09-25 10:06:11,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 10:06:11,893 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 10:06:11,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:11,895 INFO L225 Difference]: With dead ends: 439 [2020-09-25 10:06:11,896 INFO L226 Difference]: Without dead ends: 424 [2020-09-25 10:06:11,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 10:06:11,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-09-25 10:06:11,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 372. [2020-09-25 10:06:11,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-09-25 10:06:11,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 415 transitions. [2020-09-25 10:06:11,913 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 415 transitions. Word has length 79 [2020-09-25 10:06:11,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:11,913 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 415 transitions. [2020-09-25 10:06:11,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 10:06:11,913 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 415 transitions. [2020-09-25 10:06:11,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 10:06:11,918 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:11,918 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:11,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 10:06:11,919 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:11,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:11,919 INFO L82 PathProgramCache]: Analyzing trace with hash -1559910918, now seen corresponding path program 2 times [2020-09-25 10:06:11,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:11,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844071461] [2020-09-25 10:06:11,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:11,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:12,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:12,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 10:06:12,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:12,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-09-25 10:06:12,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:12,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:06:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 10:06:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 10:06:12,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:12,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:12,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:12,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:12,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:12,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:12,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:06:12,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:12,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:12,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:12,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:12,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:12,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:06:12,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844071461] [2020-09-25 10:06:12,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:12,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 10:06:12,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018690326] [2020-09-25 10:06:12,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 10:06:12,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:12,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 10:06:12,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:06:12,884 INFO L87 Difference]: Start difference. First operand 372 states and 415 transitions. Second operand 16 states. [2020-09-25 10:06:14,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:14,230 INFO L93 Difference]: Finished difference Result 419 states and 465 transitions. [2020-09-25 10:06:14,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 10:06:14,230 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 10:06:14,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:14,232 INFO L225 Difference]: With dead ends: 419 [2020-09-25 10:06:14,232 INFO L226 Difference]: Without dead ends: 389 [2020-09-25 10:06:14,236 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-09-25 10:06:14,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-09-25 10:06:14,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 361. [2020-09-25 10:06:14,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 361 states. [2020-09-25 10:06:14,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 403 transitions. [2020-09-25 10:06:14,248 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 403 transitions. Word has length 79 [2020-09-25 10:06:14,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:14,248 INFO L479 AbstractCegarLoop]: Abstraction has 361 states and 403 transitions. [2020-09-25 10:06:14,248 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 10:06:14,249 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 403 transitions. [2020-09-25 10:06:14,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 10:06:14,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:14,250 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:14,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 10:06:14,251 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:14,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:14,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1643861864, now seen corresponding path program 2 times [2020-09-25 10:06:14,251 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:14,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897882162] [2020-09-25 10:06:14,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:14,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:14,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:14,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 10:06:14,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:14,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 657 [2020-09-25 10:06:14,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:14,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:14,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:06:14,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 10:06:14,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 10:06:14,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:15,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:15,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:15,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:15,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 10:06:15,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:15,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 10:06:15,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:15,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:15,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:15,199 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 10:06:15,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897882162] [2020-09-25 10:06:15,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:15,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 10:06:15,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240666834] [2020-09-25 10:06:15,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 10:06:15,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:15,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 10:06:15,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-09-25 10:06:15,205 INFO L87 Difference]: Start difference. First operand 361 states and 403 transitions. Second operand 16 states. [2020-09-25 10:06:16,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:16,619 INFO L93 Difference]: Finished difference Result 424 states and 469 transitions. [2020-09-25 10:06:16,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-25 10:06:16,622 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-09-25 10:06:16,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:16,624 INFO L225 Difference]: With dead ends: 424 [2020-09-25 10:06:16,624 INFO L226 Difference]: Without dead ends: 403 [2020-09-25 10:06:16,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 10:06:16,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-09-25 10:06:16,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 354. [2020-09-25 10:06:16,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 354 states. [2020-09-25 10:06:16,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 395 transitions. [2020-09-25 10:06:16,637 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 395 transitions. Word has length 79 [2020-09-25 10:06:16,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:16,637 INFO L479 AbstractCegarLoop]: Abstraction has 354 states and 395 transitions. [2020-09-25 10:06:16,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 10:06:16,638 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 395 transitions. [2020-09-25 10:06:16,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 10:06:16,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:16,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:16,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 10:06:16,639 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:16,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:16,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1971811736, now seen corresponding path program 1 times [2020-09-25 10:06:16,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:16,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771028884] [2020-09-25 10:06:16,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:16,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:16,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:16,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking...