/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:04:15,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:04:15,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:04:15,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:04:15,270 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:04:15,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:04:15,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:04:15,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:04:15,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:04:15,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:04:15,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:04:15,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:04:15,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:04:15,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:04:15,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:04:15,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:04:15,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:04:15,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:04:15,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:04:15,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:04:15,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:04:15,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:04:15,319 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:04:15,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:04:15,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:04:15,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:04:15,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:04:15,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:04:15,338 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:04:15,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:04:15,341 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:04:15,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:04:15,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:04:15,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:04:15,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:04:15,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:04:15,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:04:15,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:04:15,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:04:15,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:04:15,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:04:15,360 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 00:04:15,399 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:04:15,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:04:15,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:04:15,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:04:15,402 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:04:15,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:04:15,403 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:04:15,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:04:15,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:04:15,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:04:15,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:04:15,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:04:15,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:04:15,405 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:04:15,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:04:15,406 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:04:15,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:04:15,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:04:15,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:04:15,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:04:15,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:04:15,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:04:15,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:04:15,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:04:15,408 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:04:15,408 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:04:15,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:04:15,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:04:15,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:04:15,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-25 00:04:15,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:04:15,895 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:04:15,899 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:04:15,901 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:04:15,902 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:04:15,903 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 00:04:15,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24e8dcef1/763d5a43d34f4b1687474b961bda8ba2/FLAG1cce52367 [2020-09-25 00:04:16,499 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:04:16,500 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 00:04:16,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24e8dcef1/763d5a43d34f4b1687474b961bda8ba2/FLAG1cce52367 [2020-09-25 00:04:16,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24e8dcef1/763d5a43d34f4b1687474b961bda8ba2 [2020-09-25 00:04:16,817 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:04:16,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:04:16,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:04:16,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:04:16,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:04:16,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:04:16" (1/1) ... [2020-09-25 00:04:16,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2362c63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:16, skipping insertion in model container [2020-09-25 00:04:16,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:04:16" (1/1) ... [2020-09-25 00:04:16,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:04:16,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:04:17,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:04:17,214 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:04:17,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:04:17,358 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:04:17,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:17 WrapperNode [2020-09-25 00:04:17,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:04:17,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:04:17,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:04:17,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:04:17,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:17" (1/1) ... [2020-09-25 00:04:17,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:17" (1/1) ... [2020-09-25 00:04:17,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:17" (1/1) ... [2020-09-25 00:04:17,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:17" (1/1) ... [2020-09-25 00:04:17,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:17" (1/1) ... [2020-09-25 00:04:17,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:17" (1/1) ... [2020-09-25 00:04:17,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:17" (1/1) ... [2020-09-25 00:04:17,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:04:17,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:04:17,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:04:17,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:04:17,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:17" (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 00:04:17,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:04:17,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:04:17,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:04:17,501 INFO L138 BoogieDeclarations]: Found implementation of procedure r_strncpy [2020-09-25 00:04:17,501 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_expression_list [2020-09-25 00:04:17,501 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:04:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:04:17,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 00:04:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:04:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2020-09-25 00:04:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2020-09-25 00:04:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2020-09-25 00:04:17,502 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2020-09-25 00:04:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy_ptr [2020-09-25 00:04:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2020-09-25 00:04:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2020-09-25 00:04:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2020-09-25 00:04:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2020-09-25 00:04:17,503 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2020-09-25 00:04:17,504 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2020-09-25 00:04:17,504 INFO L130 BoogieDeclarations]: Found specification of procedure isascii [2020-09-25 00:04:17,504 INFO L130 BoogieDeclarations]: Found specification of procedure isspace [2020-09-25 00:04:17,504 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-25 00:04:17,504 INFO L130 BoogieDeclarations]: Found specification of procedure strrand [2020-09-25 00:04:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure istrrand [2020-09-25 00:04:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure istrchr [2020-09-25 00:04:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure istrrchr [2020-09-25 00:04:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure istrncmp [2020-09-25 00:04:17,505 INFO L130 BoogieDeclarations]: Found specification of procedure istrstr [2020-09-25 00:04:17,506 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncpy [2020-09-25 00:04:17,506 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcpy [2020-09-25 00:04:17,506 INFO L130 BoogieDeclarations]: Found specification of procedure r_strcat [2020-09-25 00:04:17,506 INFO L130 BoogieDeclarations]: Found specification of procedure r_strncat [2020-09-25 00:04:17,506 INFO L130 BoogieDeclarations]: Found specification of procedure r_memcpy [2020-09-25 00:04:17,506 INFO L130 BoogieDeclarations]: Found specification of procedure parse_expression_list [2020-09-25 00:04:17,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 00:04:17,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:04:17,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:04:17,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:04:17,507 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:04:17,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:04:17,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:04:18,116 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:04:18,116 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 00:04:18,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:04:18 BoogieIcfgContainer [2020-09-25 00:04:18,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:04:18,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:04:18,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:04:18,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:04:18,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:04:16" (1/3) ... [2020-09-25 00:04:18,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbcc10b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:04:18, skipping insertion in model container [2020-09-25 00:04:18,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:04:17" (2/3) ... [2020-09-25 00:04:18,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbcc10b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:04:18, skipping insertion in model container [2020-09-25 00:04:18,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:04:18" (3/3) ... [2020-09-25 00:04:18,135 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_OpenSER_cases1_stripFullBoth_arr.i [2020-09-25 00:04:18,145 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:04:18,156 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:04:18,180 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:04:18,210 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:04:18,210 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:04:18,210 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:04:18,211 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:04:18,211 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:04:18,211 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:04:18,211 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:04:18,211 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:04:18,237 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states. [2020-09-25 00:04:18,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 00:04:18,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:18,249 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] [2020-09-25 00:04:18,250 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:18,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:18,257 INFO L82 PathProgramCache]: Analyzing trace with hash 593727157, now seen corresponding path program 1 times [2020-09-25 00:04:18,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:18,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1770843878] [2020-09-25 00:04:18,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:18,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:18,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:18,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:18,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:19,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:19,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:19,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:20,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:21,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:21,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 00:04:21,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:04:21,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2831 [2020-09-25 00:04:21,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 00:04:21,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:21,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:04:21,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:21,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:21,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:21,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:04:21,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:21,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:04:21,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:21,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:21,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:21,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:21,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:21,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 00:04:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:21,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:21,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:21,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 00:04:21,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:21,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 00:04:21,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:21,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:21,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:21,399 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 00:04:21,400 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1770843878] [2020-09-25 00:04:21,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:04:21,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 00:04:21,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214066640] [2020-09-25 00:04:21,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 00:04:21,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:21,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 00:04:21,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 00:04:21,432 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 3 states. [2020-09-25 00:04:21,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:21,714 INFO L93 Difference]: Finished difference Result 254 states and 290 transitions. [2020-09-25 00:04:21,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 00:04:21,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-09-25 00:04:21,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:21,733 INFO L225 Difference]: With dead ends: 254 [2020-09-25 00:04:21,734 INFO L226 Difference]: Without dead ends: 111 [2020-09-25 00:04:21,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 00:04:21,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-25 00:04:21,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-09-25 00:04:21,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-25 00:04:21,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2020-09-25 00:04:21,810 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 51 [2020-09-25 00:04:21,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:21,811 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2020-09-25 00:04:21,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 00:04:21,811 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2020-09-25 00:04:21,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-09-25 00:04:21,815 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:21,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:21,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:04:21,816 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:21,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:21,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1128985001, now seen corresponding path program 1 times [2020-09-25 00:04:21,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:21,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589343773] [2020-09-25 00:04:21,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:21,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:21,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:21,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:21,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:23,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:23,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:23,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:23,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:23,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:24,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:26,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:26,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 00:04:26,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 00:04:26,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:04:26,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:26,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:04:26,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:04:26,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 00:04:26,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:26,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:26,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:26,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:26,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:26,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:04:26,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:26,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:04:26,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:26,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:26,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:26,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:26,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:26,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 00:04:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:26,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:26,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:26,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 00:04:26,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:26,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:04:26,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:26,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:26,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:26,911 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 00:04:26,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589343773] [2020-09-25 00:04:26,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:04:26,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 00:04:26,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238584875] [2020-09-25 00:04:26,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 00:04:26,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:26,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 00:04:26,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:04:26,918 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand 4 states. [2020-09-25 00:04:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:27,146 INFO L93 Difference]: Finished difference Result 212 states and 232 transitions. [2020-09-25 00:04:27,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 00:04:27,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-09-25 00:04:27,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:27,149 INFO L225 Difference]: With dead ends: 212 [2020-09-25 00:04:27,149 INFO L226 Difference]: Without dead ends: 117 [2020-09-25 00:04:27,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:04:27,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-09-25 00:04:27,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 112. [2020-09-25 00:04:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-25 00:04:27,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 122 transitions. [2020-09-25 00:04:27,166 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 122 transitions. Word has length 63 [2020-09-25 00:04:27,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:27,167 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 122 transitions. [2020-09-25 00:04:27,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 00:04:27,167 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 122 transitions. [2020-09-25 00:04:27,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 00:04:27,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:27,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:27,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:04:27,175 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:27,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:27,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1210839627, now seen corresponding path program 1 times [2020-09-25 00:04:27,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:27,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1631322756] [2020-09-25 00:04:27,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:27,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:27,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:27,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:27,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:29,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:29,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:29,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:29,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:29,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:31,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:32,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:32,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 00:04:32,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 00:04:32,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 00:04:32,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:04:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:04:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:04:32,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:32,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:32,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:32,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:32,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:04:32,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:32,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:04:32,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:32,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:32,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:32,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-09-25 00:04:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:32,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:32,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:32,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 00:04:32,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:32,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 00:04:32,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:32,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:32,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:32,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:32,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:32,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:04:32,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1631322756] [2020-09-25 00:04:32,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:04:32,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 00:04:32,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517970630] [2020-09-25 00:04:32,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 00:04:32,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:32,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 00:04:32,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:04:32,331 INFO L87 Difference]: Start difference. First operand 112 states and 122 transitions. Second operand 6 states. [2020-09-25 00:04:32,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:32,588 INFO L93 Difference]: Finished difference Result 219 states and 239 transitions. [2020-09-25 00:04:32,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 00:04:32,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-09-25 00:04:32,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:32,590 INFO L225 Difference]: With dead ends: 219 [2020-09-25 00:04:32,591 INFO L226 Difference]: Without dead ends: 124 [2020-09-25 00:04:32,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:04:32,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-25 00:04:32,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 119. [2020-09-25 00:04:32,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-25 00:04:32,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 129 transitions. [2020-09-25 00:04:32,605 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 129 transitions. Word has length 70 [2020-09-25 00:04:32,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:32,605 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 129 transitions. [2020-09-25 00:04:32,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 00:04:32,606 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 129 transitions. [2020-09-25 00:04:32,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-25 00:04:32,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:32,607 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:32,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:04:32,607 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:32,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:32,608 INFO L82 PathProgramCache]: Analyzing trace with hash -257337495, now seen corresponding path program 2 times [2020-09-25 00:04:32,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:32,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135063859] [2020-09-25 00:04:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:32,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:32,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:32,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:32,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:36,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:36,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:36,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:36,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:36,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:37,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:37,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 00:04:37,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:04:37,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 00:04:37,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:04:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:04:37,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 00:04:37,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:37,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:37,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:37,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:37,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:04:37,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:37,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 00:04:37,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:37,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:37,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:37,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:37,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:37,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 00:04:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:37,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:37,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:37,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 00:04:37,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:37,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:04:37,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:37,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:37,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:37,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:37,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:04:37,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135063859] [2020-09-25 00:04:37,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:04:37,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 00:04:37,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388302409] [2020-09-25 00:04:37,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:04:37,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:37,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:04:37,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:04:37,761 INFO L87 Difference]: Start difference. First operand 119 states and 129 transitions. Second operand 8 states. [2020-09-25 00:04:38,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:38,093 INFO L93 Difference]: Finished difference Result 226 states and 246 transitions. [2020-09-25 00:04:38,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 00:04:38,094 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 77 [2020-09-25 00:04:38,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:38,096 INFO L225 Difference]: With dead ends: 226 [2020-09-25 00:04:38,099 INFO L226 Difference]: Without dead ends: 131 [2020-09-25 00:04:38,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:04:38,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-25 00:04:38,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 126. [2020-09-25 00:04:38,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-09-25 00:04:38,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 136 transitions. [2020-09-25 00:04:38,119 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 136 transitions. Word has length 77 [2020-09-25 00:04:38,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:38,120 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 136 transitions. [2020-09-25 00:04:38,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:04:38,120 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 136 transitions. [2020-09-25 00:04:38,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-25 00:04:38,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:38,125 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:38,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:04:38,125 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:38,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:38,126 INFO L82 PathProgramCache]: Analyzing trace with hash 883135627, now seen corresponding path program 3 times [2020-09-25 00:04:38,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:38,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891262152] [2020-09-25 00:04:38,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:38,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:38,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:38,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:38,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:42,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:42,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:42,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:42,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:43,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:43,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 00:04:43,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:04:43,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 00:04:43,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:43,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:04:43,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:04:43,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 00:04:43,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:43,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:43,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:43,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:43,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:04:43,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:43,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:04:43,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:43,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:43,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:43,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:43,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 00:04:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:43,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:43,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:43,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 00:04:43,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:43,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:04:43,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:43,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:43,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:43,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:43,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:04:43,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891262152] [2020-09-25 00:04:43,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:04:43,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 00:04:43,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859213895] [2020-09-25 00:04:43,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 00:04:43,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:43,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 00:04:43,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:04:43,296 INFO L87 Difference]: Start difference. First operand 126 states and 136 transitions. Second operand 10 states. [2020-09-25 00:04:43,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:43,707 INFO L93 Difference]: Finished difference Result 233 states and 253 transitions. [2020-09-25 00:04:43,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 00:04:43,708 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-09-25 00:04:43,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:43,709 INFO L225 Difference]: With dead ends: 233 [2020-09-25 00:04:43,709 INFO L226 Difference]: Without dead ends: 138 [2020-09-25 00:04:43,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:04:43,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-25 00:04:43,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2020-09-25 00:04:43,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-09-25 00:04:43,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 143 transitions. [2020-09-25 00:04:43,729 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 143 transitions. Word has length 84 [2020-09-25 00:04:43,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:43,731 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 143 transitions. [2020-09-25 00:04:43,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 00:04:43,731 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 143 transitions. [2020-09-25 00:04:43,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 00:04:43,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:43,734 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:43,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:04:43,735 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:43,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:43,739 INFO L82 PathProgramCache]: Analyzing trace with hash -687690455, now seen corresponding path program 4 times [2020-09-25 00:04:43,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:43,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313957870] [2020-09-25 00:04:43,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:43,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:43,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:43,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:43,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:48,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:48,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 00:04:48,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:04:48,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 00:04:48,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:48,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:04:48,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:04:48,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:04:48,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 00:04:48,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:48,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:48,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:48,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:04:48,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:48,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:04:48,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:48,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:48,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:48,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-25 00:04:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:48,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:48,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:48,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 00:04:48,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:48,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:04:48,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:48,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:04:48,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313957870] [2020-09-25 00:04:48,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:04:48,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 00:04:48,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105429022] [2020-09-25 00:04:48,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 00:04:48,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:48,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 00:04:48,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:04:48,912 INFO L87 Difference]: Start difference. First operand 133 states and 143 transitions. Second operand 12 states. [2020-09-25 00:04:49,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:49,317 INFO L93 Difference]: Finished difference Result 240 states and 260 transitions. [2020-09-25 00:04:49,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 00:04:49,318 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-09-25 00:04:49,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:49,319 INFO L225 Difference]: With dead ends: 240 [2020-09-25 00:04:49,319 INFO L226 Difference]: Without dead ends: 145 [2020-09-25 00:04:49,321 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-25 00:04:49,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-09-25 00:04:49,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 140. [2020-09-25 00:04:49,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-25 00:04:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 150 transitions. [2020-09-25 00:04:49,336 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 150 transitions. Word has length 91 [2020-09-25 00:04:49,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:49,337 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 150 transitions. [2020-09-25 00:04:49,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 00:04:49,337 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 150 transitions. [2020-09-25 00:04:49,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-09-25 00:04:49,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:49,338 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:49,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:04:49,339 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:49,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:49,339 INFO L82 PathProgramCache]: Analyzing trace with hash -722319669, now seen corresponding path program 5 times [2020-09-25 00:04:49,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:49,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037068083] [2020-09-25 00:04:49,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:49,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:49,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:49,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:49,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:54,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:54,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 00:04:54,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:04:54,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:04:54,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:54,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 00:04:54,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:04:54,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 00:04:54,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:54,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:04:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:54,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:54,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:54,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:04:54,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:54,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:04:54,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:54,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:54,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:04:54,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:54,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:04:54,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-25 00:04:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:54,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:54,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:04:54,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 00:04:54,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:04:54,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:04:54,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:04:54,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:04:54,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:04:54,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:04:54,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:04:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:04:54,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037068083] [2020-09-25 00:04:54,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:04:54,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 00:04:54,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856179821] [2020-09-25 00:04:54,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 00:04:54,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:04:54,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 00:04:54,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:04:54,552 INFO L87 Difference]: Start difference. First operand 140 states and 150 transitions. Second operand 14 states. [2020-09-25 00:04:55,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:04:55,070 INFO L93 Difference]: Finished difference Result 247 states and 267 transitions. [2020-09-25 00:04:55,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 00:04:55,071 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 98 [2020-09-25 00:04:55,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:04:55,074 INFO L225 Difference]: With dead ends: 247 [2020-09-25 00:04:55,074 INFO L226 Difference]: Without dead ends: 152 [2020-09-25 00:04:55,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-09-25 00:04:55,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-09-25 00:04:55,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 147. [2020-09-25 00:04:55,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-09-25 00:04:55,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 157 transitions. [2020-09-25 00:04:55,096 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 157 transitions. Word has length 98 [2020-09-25 00:04:55,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:04:55,097 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 157 transitions. [2020-09-25 00:04:55,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 00:04:55,097 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 157 transitions. [2020-09-25 00:04:55,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-25 00:04:55,100 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:04:55,101 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:04:55,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:04:55,101 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:04:55,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:04:55,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1819472617, now seen corresponding path program 6 times [2020-09-25 00:04:55,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:04:55,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377459182] [2020-09-25 00:04:55,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:04:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:04:55,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:55,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:55,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:04:57,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:00,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:00,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 00:05:00,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:05:00,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 00:05:00,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 00:05:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:05:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 00:05:00,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:00,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:05:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:00,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:00,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:00,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:05:00,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:00,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:05:00,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:00,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:00,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:05:00,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:00,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:05:00,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-25 00:05:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:00,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:00,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:05:00,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 00:05:00,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:05:00,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:05:00,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:05:00,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:05:00,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:05:00,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:05:00,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:05:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:05:00,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377459182] [2020-09-25 00:05:00,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:05:00,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 00:05:00,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337744878] [2020-09-25 00:05:00,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 00:05:00,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:05:00,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 00:05:00,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:05:00,361 INFO L87 Difference]: Start difference. First operand 147 states and 157 transitions. Second operand 16 states. [2020-09-25 00:05:01,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:05:01,014 INFO L93 Difference]: Finished difference Result 254 states and 274 transitions. [2020-09-25 00:05:01,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 00:05:01,014 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 105 [2020-09-25 00:05:01,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:05:01,016 INFO L225 Difference]: With dead ends: 254 [2020-09-25 00:05:01,016 INFO L226 Difference]: Without dead ends: 159 [2020-09-25 00:05:01,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=511, Unknown=0, NotChecked=0, Total=756 [2020-09-25 00:05:01,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-09-25 00:05:01,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 154. [2020-09-25 00:05:01,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-25 00:05:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 164 transitions. [2020-09-25 00:05:01,027 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 164 transitions. Word has length 105 [2020-09-25 00:05:01,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:05:01,028 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 164 transitions. [2020-09-25 00:05:01,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 00:05:01,030 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 164 transitions. [2020-09-25 00:05:01,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 00:05:01,031 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:05:01,031 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:05:01,032 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:05:01,032 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:05:01,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:05:01,032 INFO L82 PathProgramCache]: Analyzing trace with hash -612628213, now seen corresponding path program 7 times [2020-09-25 00:05:01,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:05:01,033 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211370452] [2020-09-25 00:05:01,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:05:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:05:01,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:01,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:01,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:05:01,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking...