/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--regulator--isl6271a-regulator.ko-main.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 13:06:37,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 13:06:37,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 13:06:37,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 13:06:37,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 13:06:37,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 13:06:37,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 13:06:37,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 13:06:37,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 13:06:37,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 13:06:37,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 13:06:37,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 13:06:37,662 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 13:06:37,663 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 13:06:37,664 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 13:06:37,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 13:06:37,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 13:06:37,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 13:06:37,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 13:06:37,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 13:06:37,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 13:06:37,674 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 13:06:37,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 13:06:37,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 13:06:37,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 13:06:37,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 13:06:37,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 13:06:37,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 13:06:37,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 13:06:37,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 13:06:37,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 13:06:37,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 13:06:37,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 13:06:37,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 13:06:37,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 13:06:37,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 13:06:37,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 13:06:37,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 13:06:37,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 13:06:37,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 13:06:37,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 13:06:37,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-09-21 13:06:37,719 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 13:06:37,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 13:06:37,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 13:06:37,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 13:06:37,721 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 13:06:37,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 13:06:37,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 13:06:37,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 13:06:37,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 13:06:37,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 13:06:37,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 13:06:37,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 13:06:37,723 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 13:06:37,723 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 13:06:37,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 13:06:37,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 13:06:37,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 13:06:37,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 13:06:37,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 13:06:37,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 13:06:37,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 13:06:37,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 13:06:37,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 13:06:37,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 13:06:37,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 13:06:37,725 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 13:06:37,725 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-21 13:06:37,726 INFO L138 SettingsManager]: * To the following directory=dump/ 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 13:06:38,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 13:06:38,202 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 13:06:38,207 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 13:06:38,209 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 13:06:38,209 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 13:06:38,211 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--regulator--isl6271a-regulator.ko-main.cil.out.i [2020-09-21 13:06:38,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4faff1067/151a3174b69d4010a0579588d9e9a396/FLAGe44f4469c [2020-09-21 13:06:39,060 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 13:06:39,061 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--regulator--isl6271a-regulator.ko-main.cil.out.i [2020-09-21 13:06:39,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4faff1067/151a3174b69d4010a0579588d9e9a396/FLAGe44f4469c [2020-09-21 13:06:39,204 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4faff1067/151a3174b69d4010a0579588d9e9a396 [2020-09-21 13:06:39,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 13:06:39,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 13:06:39,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 13:06:39,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 13:06:39,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 13:06:39,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 01:06:39" (1/1) ... [2020-09-21 13:06:39,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ee6612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:39, skipping insertion in model container [2020-09-21 13:06:39,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 01:06:39" (1/1) ... [2020-09-21 13:06:39,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 13:06:39,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 13:06:40,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 13:06:40,495 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 13:06:40,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 13:06:40,741 INFO L208 MainTranslator]: Completed translation [2020-09-21 13:06:40,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:40 WrapperNode [2020-09-21 13:06:40,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 13:06:40,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 13:06:40,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 13:06:40,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 13:06:40,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:40" (1/1) ... [2020-09-21 13:06:40,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:40" (1/1) ... [2020-09-21 13:06:40,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:40" (1/1) ... [2020-09-21 13:06:40,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:40" (1/1) ... [2020-09-21 13:06:40,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:40" (1/1) ... [2020-09-21 13:06:40,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:40" (1/1) ... [2020-09-21 13:06:40,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:40" (1/1) ... [2020-09-21 13:06:40,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 13:06:40,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 13:06:40,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 13:06:40,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 13:06:40,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:40" (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 [2020-09-21 13:06:40,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 13:06:40,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 13:06:40,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~u32~0 [2020-09-21 13:06:40,998 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2020-09-21 13:06:40,998 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2020-09-21 13:06:40,998 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_clientdata [2020-09-21 13:06:40,999 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_set_clientdata [2020-09-21 13:06:40,999 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_get_functionality [2020-09-21 13:06:40,999 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_check_functionality [2020-09-21 13:06:40,999 INFO L138 BoogieDeclarations]: Found implementation of procedure isl6271a_get_voltage_sel [2020-09-21 13:06:41,000 INFO L138 BoogieDeclarations]: Found implementation of procedure isl6271a_set_voltage_sel [2020-09-21 13:06:41,000 INFO L138 BoogieDeclarations]: Found implementation of procedure isl6271a_probe [2020-09-21 13:06:41,000 INFO L138 BoogieDeclarations]: Found implementation of procedure isl6271a_remove [2020-09-21 13:06:41,000 INFO L138 BoogieDeclarations]: Found implementation of procedure isl6271a_init [2020-09-21 13:06:41,000 INFO L138 BoogieDeclarations]: Found implementation of procedure isl6271a_cleanup [2020-09-21 13:06:41,001 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 13:06:41,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_1 [2020-09-21 13:06:41,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_2 [2020-09-21 13:06:41,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_3 [2020-09-21 13:06:41,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_4 [2020-09-21 13:06:41,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_5 [2020-09-21 13:06:41,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_6 [2020-09-21 13:06:41,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_7 [2020-09-21 13:06:41,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_8 [2020-09-21 13:06:41,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2020-09-21 13:06:41,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_10 [2020-09-21 13:06:41,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_11 [2020-09-21 13:06:41,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-09-21 13:06:41,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-09-21 13:06:41,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-09-21 13:06:41,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_cred_guard_mutex_of_signal_struct [2020-09-21 13:06:41,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_cred_guard_mutex_of_signal_struct [2020-09-21 13:06:41,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cred_guard_mutex_of_signal_struct [2020-09-21 13:06:41,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_cred_guard_mutex_of_signal_struct [2020-09-21 13:06:41,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_cred_guard_mutex_of_signal_struct [2020-09-21 13:06:41,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_cred_guard_mutex_of_signal_struct [2020-09-21 13:06:41,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cred_guard_mutex_of_signal_struct [2020-09-21 13:06:41,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2020-09-21 13:06:41,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2020-09-21 13:06:41,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2020-09-21 13:06:41,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2020-09-21 13:06:41,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2020-09-21 13:06:41,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2020-09-21 13:06:41,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2020-09-21 13:06:41,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mtx_of_isl_pmic [2020-09-21 13:06:41,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mtx_of_isl_pmic [2020-09-21 13:06:41,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mtx_of_isl_pmic [2020-09-21 13:06:41,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mtx_of_isl_pmic [2020-09-21 13:06:41,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mtx_of_isl_pmic [2020-09-21 13:06:41,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mtx_of_isl_pmic [2020-09-21 13:06:41,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mtx_of_isl_pmic [2020-09-21 13:06:41,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2020-09-21 13:06:41,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2020-09-21 13:06:41,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2020-09-21 13:06:41,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2020-09-21 13:06:41,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2020-09-21 13:06:41,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2020-09-21 13:06:41,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2020-09-21 13:06:41,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-09-21 13:06:41,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-09-21 13:06:41,010 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2020-09-21 13:06:41,010 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-09-21 13:06:41,010 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 13:06:41,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-09-21 13:06:41,010 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-09-21 13:06:41,010 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-09-21 13:06:41,010 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2020-09-21 13:06:41,011 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_del_driver [2020-09-21 13:06:41,011 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_register_driver [2020-09-21 13:06:41,011 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_read_byte [2020-09-21 13:06:41,011 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_smbus_write_byte [2020-09-21 13:06:41,011 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-09-21 13:06:41,011 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2020-09-21 13:06:41,012 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-09-21 13:06:41,012 INFO L138 BoogieDeclarations]: Found implementation of procedure rdev_get_drvdata [2020-09-21 13:06:41,012 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_list_voltage_linear [2020-09-21 13:06:41,012 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_map_voltage_linear [2020-09-21 13:06:41,012 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_register [2020-09-21 13:06:41,012 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_unregister [2020-09-21 13:06:41,013 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-09-21 13:06:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 13:06:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-09-21 13:06:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2020-09-21 13:06:41,013 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2020-09-21 13:06:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2020-09-21 13:06:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2020-09-21 13:06:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_4 [2020-09-21 13:06:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-09-21 13:06:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_2 [2020-09-21 13:06:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_5 [2020-09-21 13:06:41,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_7 [2020-09-21 13:06:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2020-09-21 13:06:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_11 [2020-09-21 13:06:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-09-21 13:06:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_1 [2020-09-21 13:06:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_3 [2020-09-21 13:06:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_6 [2020-09-21 13:06:41,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_8 [2020-09-21 13:06:41,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_10 [2020-09-21 13:06:41,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cred_guard_mutex_of_signal_struct [2020-09-21 13:06:41,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cred_guard_mutex_of_signal_struct [2020-09-21 13:06:41,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2020-09-21 13:06:41,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2020-09-21 13:06:41,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mtx_of_isl_pmic [2020-09-21 13:06:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mtx_of_isl_pmic [2020-09-21 13:06:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2020-09-21 13:06:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2020-09-21 13:06:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2020-09-21 13:06:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 13:06:41,017 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2020-09-21 13:06:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-09-21 13:06:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-09-21 13:06:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-09-21 13:06:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_register [2020-09-21 13:06:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_unregister [2020-09-21 13:06:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure rdev_get_drvdata [2020-09-21 13:06:41,018 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_list_voltage_linear [2020-09-21 13:06:41,019 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_map_voltage_linear [2020-09-21 13:06:41,019 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_read_byte [2020-09-21 13:06:41,019 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_smbus_write_byte [2020-09-21 13:06:41,019 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_clientdata [2020-09-21 13:06:41,019 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_set_clientdata [2020-09-21 13:06:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_register_driver [2020-09-21 13:06:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_del_driver [2020-09-21 13:06:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_get_functionality [2020-09-21 13:06:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~u32~0 [2020-09-21 13:06:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 13:06:41,020 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_check_functionality [2020-09-21 13:06:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure isl6271a_get_voltage_sel [2020-09-21 13:06:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 13:06:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure isl6271a_set_voltage_sel [2020-09-21 13:06:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure isl6271a_probe [2020-09-21 13:06:41,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 13:06:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 13:06:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 13:06:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure isl6271a_remove [2020-09-21 13:06:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure isl6271a_init [2020-09-21 13:06:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure isl6271a_cleanup [2020-09-21 13:06:41,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-09-21 13:06:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-09-21 13:06:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 13:06:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-09-21 13:06:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-09-21 13:06:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_cred_guard_mutex_of_signal_struct [2020-09-21 13:06:41,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_cred_guard_mutex_of_signal_struct [2020-09-21 13:06:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_cred_guard_mutex_of_signal_struct [2020-09-21 13:06:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_cred_guard_mutex_of_signal_struct [2020-09-21 13:06:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_cred_guard_mutex_of_signal_struct [2020-09-21 13:06:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2020-09-21 13:06:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2020-09-21 13:06:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2020-09-21 13:06:41,024 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2020-09-21 13:06:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2020-09-21 13:06:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mtx_of_isl_pmic [2020-09-21 13:06:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mtx_of_isl_pmic [2020-09-21 13:06:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mtx_of_isl_pmic [2020-09-21 13:06:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mtx_of_isl_pmic [2020-09-21 13:06:41,025 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mtx_of_isl_pmic [2020-09-21 13:06:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2020-09-21 13:06:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2020-09-21 13:06:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2020-09-21 13:06:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2020-09-21 13:06:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-21 13:06:41,026 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 13:06:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 13:06:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 13:06:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-09-21 13:06:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 13:06:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 13:06:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-09-21 13:06:41,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 13:06:41,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 13:06:41,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-21 13:06:41,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 13:06:41,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 13:06:42,478 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 13:06:42,479 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 13:06:42,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 01:06:42 BoogieIcfgContainer [2020-09-21 13:06:42,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 13:06:42,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 13:06:42,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 13:06:42,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 13:06:42,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 01:06:39" (1/3) ... [2020-09-21 13:06:42,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13662d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 01:06:42, skipping insertion in model container [2020-09-21 13:06:42,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 01:06:40" (2/3) ... [2020-09-21 13:06:42,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13662d4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 01:06:42, skipping insertion in model container [2020-09-21 13:06:42,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 01:06:42" (3/3) ... [2020-09-21 13:06:42,498 INFO L109 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--regulator--isl6271a-regulator.ko-main.cil.out.i [2020-09-21 13:06:42,510 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 13:06:42,522 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 13:06:42,546 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 13:06:42,580 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 13:06:42,580 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 13:06:42,580 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 13:06:42,580 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 13:06:42,580 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 13:06:42,581 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 13:06:42,581 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 13:06:42,581 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 13:06:42,613 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states. [2020-09-21 13:06:42,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-21 13:06:42,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:06:42,626 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] [2020-09-21 13:06:42,626 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:06:42,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:06:42,634 INFO L82 PathProgramCache]: Analyzing trace with hash 918442567, now seen corresponding path program 1 times [2020-09-21 13:06:42,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:06:42,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446171200] [2020-09-21 13:06:42,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:06:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:43,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:43,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:44,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:44,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 13:06:44,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 13:06:44,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1071 [2020-09-21 13:06:44,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:44,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:06:44,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 13:06:44,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 13:06:44,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 13:06:44,495 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-09-21 13:06:44,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:06:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:44,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:44,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:44,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:06:44,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:44,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-21 13:06:44,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:44,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:44,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:44,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:44,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:44,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:06:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:44,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:44,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:44,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:06:44,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:44,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 13:06:44,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:06:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:44,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 13:06:44,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:44,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-21 13:06:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:44,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:44,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:44,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 13:06:44,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:44,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 13:06:44,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:44,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:06:44,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:44,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 13:06:44,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:44,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:06:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:44,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:44,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:44,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:06:44,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:44,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 13:06:44,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:44,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:44,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:44,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:44,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:44,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 13:06:44,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446171200] [2020-09-21 13:06:44,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 13:06:44,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 13:06:44,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684051020] [2020-09-21 13:06:44,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 13:06:44,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 13:06:44,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 13:06:44,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 13:06:44,790 INFO L87 Difference]: Start difference. First operand 397 states. Second operand 5 states. [2020-09-21 13:06:45,152 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-09-21 13:06:46,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 13:06:46,624 INFO L93 Difference]: Finished difference Result 599 states and 765 transitions. [2020-09-21 13:06:46,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 13:06:46,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-09-21 13:06:46,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 13:06:46,646 INFO L225 Difference]: With dead ends: 599 [2020-09-21 13:06:46,647 INFO L226 Difference]: Without dead ends: 311 [2020-09-21 13:06:46,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 13:06:46,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-09-21 13:06:46,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 282. [2020-09-21 13:06:46,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-09-21 13:06:46,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 340 transitions. [2020-09-21 13:06:46,800 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 340 transitions. Word has length 29 [2020-09-21 13:06:46,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 13:06:46,801 INFO L479 AbstractCegarLoop]: Abstraction has 282 states and 340 transitions. [2020-09-21 13:06:46,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 13:06:46,801 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 340 transitions. [2020-09-21 13:06:46,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 13:06:46,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:06:46,814 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] [2020-09-21 13:06:46,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 13:06:46,814 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:06:46,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:06:46,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1593337431, now seen corresponding path program 1 times [2020-09-21 13:06:46,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:06:46,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826462398] [2020-09-21 13:06:46,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:06:46,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:46,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:47,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:47,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:47,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 13:06:47,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 13:06:47,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1073 [2020-09-21 13:06:47,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:06:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 13:06:47,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 13:06:47,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:48,270 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-09-21 13:06:48,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:06:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:48,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:48,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:48,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:06:48,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:48,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-21 13:06:48,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:48,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:48,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:48,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:48,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:06:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:48,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:48,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:48,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:06:48,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:48,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 13:06:48,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:48,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:48,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:48,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:48,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-09-21 13:06:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:48,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:48,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:48,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-21 13:06:48,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:48,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 13:06:48,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:48,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:48,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 13:06:48,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:48,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:48,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:06:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:48,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:48,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:48,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:06:48,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:48,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 13:06:48,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:48,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:48,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 13:06:48,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826462398] [2020-09-21 13:06:48,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 13:06:48,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 13:06:48,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242284581] [2020-09-21 13:06:48,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 13:06:48,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 13:06:48,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 13:06:48,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 13:06:48,488 INFO L87 Difference]: Start difference. First operand 282 states and 340 transitions. Second operand 5 states. [2020-09-21 13:06:48,754 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-09-21 13:06:52,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 13:06:52,122 INFO L93 Difference]: Finished difference Result 602 states and 732 transitions. [2020-09-21 13:06:52,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 13:06:52,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-09-21 13:06:52,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 13:06:52,130 INFO L225 Difference]: With dead ends: 602 [2020-09-21 13:06:52,131 INFO L226 Difference]: Without dead ends: 584 [2020-09-21 13:06:52,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 13:06:52,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-09-21 13:06:52,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 522. [2020-09-21 13:06:52,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2020-09-21 13:06:52,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 635 transitions. [2020-09-21 13:06:52,229 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 635 transitions. Word has length 30 [2020-09-21 13:06:52,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 13:06:52,230 INFO L479 AbstractCegarLoop]: Abstraction has 522 states and 635 transitions. [2020-09-21 13:06:52,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 13:06:52,230 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 635 transitions. [2020-09-21 13:06:52,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-21 13:06:52,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:06:52,232 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] [2020-09-21 13:06:52,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 13:06:52,232 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:06:52,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:06:52,233 INFO L82 PathProgramCache]: Analyzing trace with hash 889050132, now seen corresponding path program 1 times [2020-09-21 13:06:52,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:06:52,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183918808] [2020-09-21 13:06:52,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:06:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:52,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:52,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:52,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-21 13:06:52,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:52,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-21 13:06:52,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:06:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 13:06:52,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-21 13:06:52,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:52,964 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-09-21 13:06:52,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:06:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:52,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:53,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:53,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:06:53,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:53,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-21 13:06:53,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:53,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:53,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:53,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:53,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:06:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:53,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:53,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:53,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:06:53,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:53,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 13:06:53,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:53,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:06:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:53,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 13:06:53,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:53,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 13:06:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:53,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:53,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:53,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 13:06:53,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:53,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 13:06:53,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:06:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:53,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 13:06:53,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:53,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:06:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:53,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:53,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:53,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:06:53,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:53,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 13:06:53,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:53,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:53,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:53,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:53,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:53,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 13:06:53,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183918808] [2020-09-21 13:06:53,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 13:06:53,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 13:06:53,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006307110] [2020-09-21 13:06:53,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 13:06:53,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 13:06:53,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 13:06:53,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 13:06:53,263 INFO L87 Difference]: Start difference. First operand 522 states and 635 transitions. Second operand 5 states. [2020-09-21 13:06:53,618 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-09-21 13:06:55,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 13:06:55,341 INFO L93 Difference]: Finished difference Result 582 states and 710 transitions. [2020-09-21 13:06:55,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 13:06:55,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-09-21 13:06:55,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 13:06:55,348 INFO L225 Difference]: With dead ends: 582 [2020-09-21 13:06:55,349 INFO L226 Difference]: Without dead ends: 579 [2020-09-21 13:06:55,349 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 13:06:55,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2020-09-21 13:06:55,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 521. [2020-09-21 13:06:55,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 521 states. [2020-09-21 13:06:55,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 633 transitions. [2020-09-21 13:06:55,421 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 633 transitions. Word has length 35 [2020-09-21 13:06:55,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 13:06:55,422 INFO L479 AbstractCegarLoop]: Abstraction has 521 states and 633 transitions. [2020-09-21 13:06:55,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 13:06:55,422 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 633 transitions. [2020-09-21 13:06:55,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-21 13:06:55,423 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:06:55,424 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] [2020-09-21 13:06:55,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 13:06:55,424 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:06:55,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:06:55,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1790469247, now seen corresponding path program 1 times [2020-09-21 13:06:55,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:06:55,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974978715] [2020-09-21 13:06:55,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:06:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:55,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:55,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:55,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-21 13:06:55,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:55,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-09-21 13:06:55,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:55,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:06:55,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 13:06:55,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-21 13:06:55,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:56,119 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-09-21 13:06:56,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:06:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:56,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:56,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:56,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:06:56,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:56,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-21 13:06:56,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:56,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:56,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:56,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:56,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:56,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:06:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:56,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:56,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:56,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:06:56,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:56,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 13:06:56,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:56,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:06:56,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:56,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 13:06:56,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:56,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 13:06:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:56,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:56,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:56,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 13:06:56,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:56,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 13:06:56,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:06:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:56,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 13:06:56,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:56,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:06:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:56,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:56,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:56,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:06:56,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:56,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 13:06:56,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:56,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:56,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:56,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:56,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:56,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 13:06:56,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974978715] [2020-09-21 13:06:56,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 13:06:56,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 13:06:56,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283764028] [2020-09-21 13:06:56,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 13:06:56,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 13:06:56,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 13:06:56,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 13:06:56,355 INFO L87 Difference]: Start difference. First operand 521 states and 633 transitions. Second operand 5 states. [2020-09-21 13:06:56,811 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-09-21 13:06:58,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 13:06:58,511 INFO L93 Difference]: Finished difference Result 583 states and 709 transitions. [2020-09-21 13:06:58,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 13:06:58,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-09-21 13:06:58,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 13:06:58,515 INFO L225 Difference]: With dead ends: 583 [2020-09-21 13:06:58,515 INFO L226 Difference]: Without dead ends: 579 [2020-09-21 13:06:58,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 13:06:58,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2020-09-21 13:06:58,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 519. [2020-09-21 13:06:58,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 519 states. [2020-09-21 13:06:58,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 628 transitions. [2020-09-21 13:06:58,582 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 628 transitions. Word has length 36 [2020-09-21 13:06:58,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 13:06:58,582 INFO L479 AbstractCegarLoop]: Abstraction has 519 states and 628 transitions. [2020-09-21 13:06:58,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 13:06:58,583 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 628 transitions. [2020-09-21 13:06:58,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-21 13:06:58,584 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:06:58,584 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] [2020-09-21 13:06:58,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 13:06:58,585 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:06:58,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:06:58,585 INFO L82 PathProgramCache]: Analyzing trace with hash -330304393, now seen corresponding path program 1 times [2020-09-21 13:06:58,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:06:58,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205943468] [2020-09-21 13:06:58,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:06:58,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:58,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:59,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:59,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-21 13:06:59,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:59,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-09-21 13:06:59,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:59,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:06:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 13:06:59,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-21 13:06:59,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:59,423 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-09-21 13:06:59,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:06:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:59,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:59,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:59,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:06:59,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:59,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-21 13:06:59,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:59,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:59,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:59,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:59,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:59,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:06:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:59,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:59,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:59,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:06:59,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:59,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 13:06:59,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:06:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:59,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 13:06:59,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:59,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 13:06:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:59,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:59,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:59,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 13:06:59,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:59,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 13:06:59,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:59,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:06:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 13:06:59,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:59,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:06:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:06:59,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:06:59,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:06:59,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:06:59,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:06:59,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 13:06:59,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:06:59,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:06:59,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:06:59,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:06:59,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:06:59,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 13:06:59,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205943468] [2020-09-21 13:06:59,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 13:06:59,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 13:06:59,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836414383] [2020-09-21 13:06:59,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 13:06:59,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 13:06:59,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 13:06:59,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 13:06:59,689 INFO L87 Difference]: Start difference. First operand 519 states and 628 transitions. Second operand 5 states. [2020-09-21 13:07:00,035 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-09-21 13:07:01,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 13:07:01,654 INFO L93 Difference]: Finished difference Result 579 states and 703 transitions. [2020-09-21 13:07:01,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 13:07:01,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-09-21 13:07:01,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 13:07:01,661 INFO L225 Difference]: With dead ends: 579 [2020-09-21 13:07:01,661 INFO L226 Difference]: Without dead ends: 563 [2020-09-21 13:07:01,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 13:07:01,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-09-21 13:07:01,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 265. [2020-09-21 13:07:01,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-09-21 13:07:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 318 transitions. [2020-09-21 13:07:01,714 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 318 transitions. Word has length 37 [2020-09-21 13:07:01,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 13:07:01,715 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 318 transitions. [2020-09-21 13:07:01,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 13:07:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 318 transitions. [2020-09-21 13:07:01,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 13:07:01,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:07:01,719 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] [2020-09-21 13:07:01,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 13:07:01,719 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:07:01,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:07:01,720 INFO L82 PathProgramCache]: Analyzing trace with hash -429777367, now seen corresponding path program 1 times [2020-09-21 13:07:01,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:07:01,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1414988280] [2020-09-21 13:07:01,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:07:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:01,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:02,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:02,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:02,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:02,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-21 13:07:02,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 13:07:02,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1053 [2020-09-21 13:07:02,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:02,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:02,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 13:07:02,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 13:07:02,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:03,119 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-09-21 13:07:03,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:03,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:03,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:03,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:03,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-21 13:07:03,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:03,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:03,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:03,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:03,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:03,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:07:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:03,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:03,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:03,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:03,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 13:07:03,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:03,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:03,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:03,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 13:07:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:03,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:03,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 13:07:03,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:03,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 13:07:03,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:03,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:03,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 13:07:03,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:03,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:03,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:03,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:03,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:03,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:03,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 13:07:03,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:03,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:03,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:03,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 13:07:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:03,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:03,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 13:07:03,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:03,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 13:07:03,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:03,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:03,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-21 13:07:03,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:03,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:03,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:03,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:03,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 13:07:03,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:03,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 13:07:03,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:03,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:03,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:03,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:03,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:03,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 13:07:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:03,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:03,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:03,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:03,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 13:07:03,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:03,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:03,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 13:07:03,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-09-21 13:07:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:03,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:03,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:03,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:03,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:03,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 13:07:03,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:03,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:03,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 13:07:03,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:03,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 13:07:03,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1414988280] [2020-09-21 13:07:03,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 13:07:03,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 13:07:03,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19799413] [2020-09-21 13:07:03,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 13:07:03,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 13:07:03,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 13:07:03,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 13:07:03,497 INFO L87 Difference]: Start difference. First operand 265 states and 318 transitions. Second operand 7 states. [2020-09-21 13:07:03,754 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-09-21 13:07:06,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 13:07:06,959 INFO L93 Difference]: Finished difference Result 855 states and 1101 transitions. [2020-09-21 13:07:06,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 13:07:06,960 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-09-21 13:07:06,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 13:07:06,963 INFO L225 Difference]: With dead ends: 855 [2020-09-21 13:07:06,963 INFO L226 Difference]: Without dead ends: 601 [2020-09-21 13:07:06,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-21 13:07:06,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2020-09-21 13:07:07,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 434. [2020-09-21 13:07:07,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-09-21 13:07:07,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 527 transitions. [2020-09-21 13:07:07,039 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 527 transitions. Word has length 61 [2020-09-21 13:07:07,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 13:07:07,039 INFO L479 AbstractCegarLoop]: Abstraction has 434 states and 527 transitions. [2020-09-21 13:07:07,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 13:07:07,040 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 527 transitions. [2020-09-21 13:07:07,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-21 13:07:07,043 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 13:07:07,043 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, 1, 1, 1] [2020-09-21 13:07:07,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 13:07:07,044 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 13:07:07,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 13:07:07,044 INFO L82 PathProgramCache]: Analyzing trace with hash -995424080, now seen corresponding path program 1 times [2020-09-21 13:07:07,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 13:07:07,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571785729] [2020-09-21 13:07:07,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 13:07:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:07,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:08,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:08,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-21 13:07:08,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:08,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 13:07:08,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:08,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 13:07:08,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-21 13:07:08,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 13:07:08,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:08,407 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-09-21 13:07:08,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 13:07:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:08,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:08,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:08,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:08,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:08,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-21 13:07:08,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:08,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:08,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:08,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:08,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:08,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 13:07:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:08,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:08,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:08,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:08,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:08,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 13:07:08,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:08,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:08,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:08,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:08,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:08,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 13:07:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:08,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:08,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:08,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 13:07:08,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:08,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 13:07:08,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:08,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:08,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:08,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:08,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:08,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:08,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:08,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:08,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:08,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:08,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:08,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 13:07:08,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:08,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:08,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:08,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:08,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:08,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 13:07:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:08,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:08,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:08,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 13:07:08,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:08,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 13:07:08,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:08,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:08,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:08,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:08,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:08,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:08,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:08,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 13:07:08,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:08,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 13:07:08,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:08,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 13:07:08,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:08,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 13:07:08,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:08,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 13:07:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:08,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:08,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:08,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 13:07:08,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:08,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 13:07:08,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:08,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:08,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:08,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 13:07:08,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:08,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 13:07:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:08,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:08,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:08,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 13:07:08,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:08,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 13:07:08,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:08,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:08,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:08,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 13:07:08,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:08,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 13:07:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:08,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:08,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:08,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:08,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:08,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 13:07:08,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:08,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:08,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:08,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 13:07:08,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:08,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-21 13:07:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 13:07:08,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 13:07:08,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 13:07:08,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 13:07:08,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 13:07:08,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 13:07:08,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 13:07:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 13:07:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 13:07:08,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 13:07:08,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 13:07:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-21 13:07:08,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571785729] [2020-09-21 13:07:08,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 13:07:08,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 13:07:08,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924703982] [2020-09-21 13:07:08,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 13:07:08,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 13:07:08,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 13:07:08,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 13:07:08,815 INFO L87 Difference]: Start difference. First operand 434 states and 527 transitions. Second operand 7 states. [2020-09-21 13:07:10,256 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-09-21 13:07:10,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 13:07:10,737 INFO L93 Difference]: Finished difference Result 601 states and 786 transitions. [2020-09-21 13:07:10,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 13:07:10,738 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2020-09-21 13:07:10,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 13:07:10,739 INFO L225 Difference]: With dead ends: 601 [2020-09-21 13:07:10,739 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 13:07:10,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-21 13:07:10,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 13:07:10,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 13:07:10,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 13:07:10,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 13:07:10,742 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 81 [2020-09-21 13:07:10,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 13:07:10,743 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 13:07:10,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 13:07:10,743 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 13:07:10,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 13:07:10,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 13:07:10,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 13:07:11,146 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:11,508 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:11,843 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:12,164 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:12,491 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:12,803 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:13,234 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:13,523 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:13,819 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:14,106 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:14,394 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:14,682 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:14,975 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:15,258 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:15,545 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:15,910 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 176 [2020-09-21 13:07:16,200 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 176 [2020-09-21 13:07:16,512 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:16,803 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:17,441 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 84 [2020-09-21 13:07:18,100 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 84 [2020-09-21 13:07:18,388 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:18,673 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:18,898 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-09-21 13:07:19,191 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:19,541 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:19,825 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:20,117 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:20,408 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 176 [2020-09-21 13:07:20,697 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 176 [2020-09-21 13:07:20,979 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:21,265 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:21,393 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-09-21 13:07:21,967 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 84 [2020-09-21 13:07:22,578 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 27 [2020-09-21 13:07:23,175 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 84 [2020-09-21 13:07:23,781 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 27 [2020-09-21 13:07:23,916 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-09-21 13:07:24,196 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:24,478 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:24,757 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:25,036 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:25,323 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:25,604 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:25,891 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:26,172 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:26,459 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 176 [2020-09-21 13:07:26,747 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 176 [2020-09-21 13:07:27,045 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:27,331 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:27,610 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:27,889 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:28,175 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:28,462 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:28,748 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:29,034 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:29,161 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-09-21 13:07:29,441 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:29,723 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:29,850 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-09-21 13:07:30,178 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:30,499 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:30,784 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:31,071 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:31,354 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175 [2020-09-21 13:07:31,640 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:31,925 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:32,211 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 177 [2020-09-21 13:07:32,491 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 175