/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:31:38,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:31:38,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:31:38,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:31:38,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:31:38,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:31:38,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:31:38,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:31:38,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:31:38,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:31:38,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:31:38,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:31:38,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:31:38,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:31:38,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:31:38,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:31:38,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:31:38,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:31:38,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:31:38,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:31:38,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:31:38,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:31:38,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:31:38,631 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:31:38,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:31:38,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:31:38,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:31:38,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:31:38,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:31:38,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:31:38,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:31:38,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:31:38,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:31:38,662 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:31:38,663 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:31:38,664 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:31:38,665 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:31:38,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:31:38,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:31:38,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:31:38,668 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:31:38,669 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:31:38,732 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:31:38,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:31:38,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:31:38,739 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:31:38,740 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:31:38,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:31:38,741 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:31:38,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:31:38,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:31:38,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:31:38,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:31:38,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:31:38,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:31:38,743 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:31:38,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:31:38,744 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:31:38,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:31:38,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:31:38,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:31:38,745 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:31:38,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:31:38,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:31:38,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:31:38,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:31:38,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:31:38,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:31:38,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:31:38,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:31:38,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:31:38,747 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:31:39,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:31:39,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:31:39,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:31:39,230 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:31:39,231 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:31:39,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label11.c [2020-10-28 12:31:39,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ab919a70/d441422d2aee43758ca2a9878ee64198/FLAG6b597502c [2020-10-28 12:31:40,396 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:31:40,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label11.c [2020-10-28 12:31:40,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ab919a70/d441422d2aee43758ca2a9878ee64198/FLAG6b597502c [2020-10-28 12:31:40,825 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1ab919a70/d441422d2aee43758ca2a9878ee64198 [2020-10-28 12:31:40,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:31:40,836 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:31:40,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:31:40,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:31:40,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:31:40,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:31:40" (1/1) ... [2020-10-28 12:31:40,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42584668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:40, skipping insertion in model container [2020-10-28 12:31:40,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:31:40" (1/1) ... [2020-10-28 12:31:40,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:31:41,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:31:42,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:31:42,846 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:31:43,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:31:43,859 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:31:43,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:43 WrapperNode [2020-10-28 12:31:43,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:31:43,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:31:43,863 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:31:43,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:31:43,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:43" (1/1) ... [2020-10-28 12:31:43,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:43" (1/1) ... [2020-10-28 12:31:43,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:43" (1/1) ... [2020-10-28 12:31:43,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:43" (1/1) ... [2020-10-28 12:31:44,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:43" (1/1) ... [2020-10-28 12:31:44,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:43" (1/1) ... [2020-10-28 12:31:44,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:43" (1/1) ... [2020-10-28 12:31:44,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:31:44,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:31:44,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:31:44,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:31:44,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:31:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:31:44,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:31:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:31:44,577 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:31:44,577 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:31:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:31:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:31:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:31:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:31:44,578 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:31:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:31:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:31:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:31:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:31:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:31:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:31:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:31:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:31:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:31:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:31:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:31:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:31:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:31:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:31:44,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:31:56,226 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:31:56,227 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:31:56,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:31:56 BoogieIcfgContainer [2020-10-28 12:31:56,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:31:56,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:31:56,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:31:56,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:31:56,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:31:40" (1/3) ... [2020-10-28 12:31:56,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb3dc5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:31:56, skipping insertion in model container [2020-10-28 12:31:56,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:31:43" (2/3) ... [2020-10-28 12:31:56,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb3dc5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:31:56, skipping insertion in model container [2020-10-28 12:31:56,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:31:56" (3/3) ... [2020-10-28 12:31:56,256 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label11.c [2020-10-28 12:31:56,269 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:31:56,277 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:31:56,296 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:31:56,346 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:31:56,346 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:31:56,346 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:31:56,346 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:31:56,346 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:31:56,347 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:31:56,347 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:31:56,347 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:31:56,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-28 12:31:56,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-28 12:31:56,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:31:56,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:31:56,416 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:31:56,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:31:56,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1132836646, now seen corresponding path program 1 times [2020-10-28 12:31:56,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:31:56,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903012089] [2020-10-28 12:31:56,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:31:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:56,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:57,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:57,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 12:31:57,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:57,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 584 [2020-10-28 12:31:57,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:57,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:31:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:31:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 12:31:57,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:31:57,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:31:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:31:57,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:31:57,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:31:57,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:31:57,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:31:57,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:31:57,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:31:57,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:31:57,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:31:57,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:31:57,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:31:57,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:31:57,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:31:57,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903012089] [2020-10-28 12:31:57,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:31:57,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:31:57,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460586429] [2020-10-28 12:31:57,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:31:57,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:31:57,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:31:57,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:31:57,600 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-28 12:32:19,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:32:19,379 INFO L93 Difference]: Finished difference Result 3234 states and 5914 transitions. [2020-10-28 12:32:19,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:32:19,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-28 12:32:19,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:32:19,418 INFO L225 Difference]: With dead ends: 3234 [2020-10-28 12:32:19,418 INFO L226 Difference]: Without dead ends: 2026 [2020-10-28 12:32:19,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:32:19,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2020-10-28 12:32:19,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2008. [2020-10-28 12:32:19,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2008 states. [2020-10-28 12:32:19,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2008 states to 2008 states and 3289 transitions. [2020-10-28 12:32:19,641 INFO L78 Accepts]: Start accepts. Automaton has 2008 states and 3289 transitions. Word has length 33 [2020-10-28 12:32:19,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:32:19,641 INFO L481 AbstractCegarLoop]: Abstraction has 2008 states and 3289 transitions. [2020-10-28 12:32:19,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:32:19,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2008 states and 3289 transitions. [2020-10-28 12:32:19,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 12:32:19,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:32:19,652 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:32:19,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:32:19,653 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:32:19,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:32:19,655 INFO L82 PathProgramCache]: Analyzing trace with hash 337880257, now seen corresponding path program 1 times [2020-10-28 12:32:19,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:32:19,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745291720] [2020-10-28 12:32:19,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:32:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:19,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:20,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:21,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:21,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-28 12:32:21,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:32:21,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1405 [2020-10-28 12:32:21,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:21,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:21,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:32:21,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:32:21,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:32:21,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:32:21,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:32:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:21,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:21,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:21,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:32:21,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:21,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:32:21,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:21,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:21,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:32:21,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:32:21,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:32:21,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:32:21,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:32:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:21,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:21,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:21,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:32:21,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:21,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 12:32:21,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:21,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:32:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:32:21,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:32:21,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:32:21,657 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:32:21,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745291720] [2020-10-28 12:32:21,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:32:21,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:32:21,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917930346] [2020-10-28 12:32:21,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:32:21,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:32:21,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:32:21,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:32:21,667 INFO L87 Difference]: Start difference. First operand 2008 states and 3289 transitions. Second operand 7 states. [2020-10-28 12:32:46,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:32:46,574 INFO L93 Difference]: Finished difference Result 5833 states and 9673 transitions. [2020-10-28 12:32:46,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:32:46,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-28 12:32:46,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:32:46,603 INFO L225 Difference]: With dead ends: 5833 [2020-10-28 12:32:46,604 INFO L226 Difference]: Without dead ends: 3831 [2020-10-28 12:32:46,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:32:46,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3831 states. [2020-10-28 12:32:46,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3831 to 3695. [2020-10-28 12:32:46,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3695 states. [2020-10-28 12:32:46,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3695 states to 3695 states and 5275 transitions. [2020-10-28 12:32:46,752 INFO L78 Accepts]: Start accepts. Automaton has 3695 states and 5275 transitions. Word has length 108 [2020-10-28 12:32:46,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:32:46,752 INFO L481 AbstractCegarLoop]: Abstraction has 3695 states and 5275 transitions. [2020-10-28 12:32:46,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:32:46,753 INFO L276 IsEmpty]: Start isEmpty. Operand 3695 states and 5275 transitions. [2020-10-28 12:32:46,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 12:32:46,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:32:46,756 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:32:46,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:32:46,756 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:32:46,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:32:46,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1639119197, now seen corresponding path program 1 times [2020-10-28 12:32:46,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:32:46,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412415453] [2020-10-28 12:32:46,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:32:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:46,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:47,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:47,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:47,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:32:47,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:32:47,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1083 [2020-10-28 12:32:47,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:47,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:32:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:32:47,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:32:47,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:32:48,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:32:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:48,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:48,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:48,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:32:48,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:48,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:32:48,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:48,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:32:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:32:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:32:48,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:32:48,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:32:48,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:48,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:48,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:48,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 12:32:48,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:48,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-28 12:32:48,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:48,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:48,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:32:48,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:32:48,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:32:48,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:32:48,447 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:32:48,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412415453] [2020-10-28 12:32:48,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:32:48,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:32:48,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615442797] [2020-10-28 12:32:48,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:32:48,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:32:48,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:32:48,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:32:48,455 INFO L87 Difference]: Start difference. First operand 3695 states and 5275 transitions. Second operand 7 states. [2020-10-28 12:33:13,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:33:13,099 INFO L93 Difference]: Finished difference Result 11020 states and 15920 transitions. [2020-10-28 12:33:13,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:33:13,101 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 138 [2020-10-28 12:33:13,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:33:13,143 INFO L225 Difference]: With dead ends: 11020 [2020-10-28 12:33:13,143 INFO L226 Difference]: Without dead ends: 7331 [2020-10-28 12:33:13,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:33:13,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7331 states. [2020-10-28 12:33:13,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7331 to 7155. [2020-10-28 12:33:13,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7155 states. [2020-10-28 12:33:13,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7155 states to 7155 states and 9235 transitions. [2020-10-28 12:33:13,384 INFO L78 Accepts]: Start accepts. Automaton has 7155 states and 9235 transitions. Word has length 138 [2020-10-28 12:33:13,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:33:13,385 INFO L481 AbstractCegarLoop]: Abstraction has 7155 states and 9235 transitions. [2020-10-28 12:33:13,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:33:13,386 INFO L276 IsEmpty]: Start isEmpty. Operand 7155 states and 9235 transitions. [2020-10-28 12:33:13,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-28 12:33:13,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:33:13,394 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:33:13,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:33:13,394 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:33:13,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:33:13,395 INFO L82 PathProgramCache]: Analyzing trace with hash -250420618, now seen corresponding path program 1 times [2020-10-28 12:33:13,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:33:13,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911638683] [2020-10-28 12:33:13,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:33:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:13,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:13,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:14,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:18,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:18,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-28 12:33:18,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:33:18,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 12:33:18,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:18,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:33:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 12:33:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:33:18,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:33:18,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:33:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:18,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:18,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:18,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:33:18,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:18,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:33:18,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:18,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:18,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:33:18,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:33:18,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:33:18,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:33:18,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:33:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:18,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:18,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:18,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:33:18,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:18,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 12:33:18,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:18,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:33:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:33:18,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:33:18,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:33:18,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:33:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:18,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:19,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:19,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:33:19,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:19,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-28 12:33:19,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:19,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:19,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:33:19,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:33:19,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:33:19,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:33:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:33:19,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911638683] [2020-10-28 12:33:19,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:33:19,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:33:19,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397298255] [2020-10-28 12:33:19,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:33:19,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:33:19,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:33:19,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:33:19,429 INFO L87 Difference]: Start difference. First operand 7155 states and 9235 transitions. Second operand 7 states. [2020-10-28 12:33:52,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:33:52,208 INFO L93 Difference]: Finished difference Result 18991 states and 25733 transitions. [2020-10-28 12:33:52,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:33:52,210 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-10-28 12:33:52,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:33:52,282 INFO L225 Difference]: With dead ends: 18991 [2020-10-28 12:33:52,282 INFO L226 Difference]: Without dead ends: 12645 [2020-10-28 12:33:52,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:33:52,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12645 states. [2020-10-28 12:33:52,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12645 to 12450. [2020-10-28 12:33:52,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12450 states. [2020-10-28 12:33:52,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12450 states to 12450 states and 16761 transitions. [2020-10-28 12:33:52,768 INFO L78 Accepts]: Start accepts. Automaton has 12450 states and 16761 transitions. Word has length 233 [2020-10-28 12:33:52,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:33:52,771 INFO L481 AbstractCegarLoop]: Abstraction has 12450 states and 16761 transitions. [2020-10-28 12:33:52,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:33:52,772 INFO L276 IsEmpty]: Start isEmpty. Operand 12450 states and 16761 transitions. [2020-10-28 12:33:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-28 12:33:52,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:33:52,784 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:33:52,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:33:52,785 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:33:52,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:33:52,786 INFO L82 PathProgramCache]: Analyzing trace with hash -215180128, now seen corresponding path program 1 times [2020-10-28 12:33:52,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:33:52,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193097485] [2020-10-28 12:33:52,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:33:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:52,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:53,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:53,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:54,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:55,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:57,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:57,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 12:33:57,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:33:57,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-28 12:33:57,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:57,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:57,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:33:57,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:33:57,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:33:57,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:33:58,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:33:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:58,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:58,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:58,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:33:58,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:58,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:33:58,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:58,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:58,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:33:58,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:33:58,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:33:58,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:33:58,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:33:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:58,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:58,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:58,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:33:58,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:58,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-28 12:33:58,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:58,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:58,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:33:58,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:33:58,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:33:58,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:33:58,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 12:33:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:58,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:58,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:58,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 12:33:58,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:58,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-28 12:33:58,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:58,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:58,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:33:58,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:33:58,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:33:58,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:33:59,359 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:33:59,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193097485] [2020-10-28 12:33:59,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:33:59,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:33:59,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492585290] [2020-10-28 12:33:59,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:33:59,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:33:59,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:33:59,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:33:59,362 INFO L87 Difference]: Start difference. First operand 12450 states and 16761 transitions. Second operand 8 states. [2020-10-28 12:34:02,660 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:34:35,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:34:35,651 INFO L93 Difference]: Finished difference Result 39608 states and 58923 transitions. [2020-10-28 12:34:35,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 12:34:35,653 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 303 [2020-10-28 12:34:35,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:34:35,799 INFO L225 Difference]: With dead ends: 39608 [2020-10-28 12:34:35,800 INFO L226 Difference]: Without dead ends: 27967 [2020-10-28 12:34:35,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 12:34:35,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27967 states. [2020-10-28 12:34:36,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27967 to 27833. [2020-10-28 12:34:36,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27833 states. [2020-10-28 12:34:36,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27833 states to 27833 states and 37271 transitions. [2020-10-28 12:34:36,893 INFO L78 Accepts]: Start accepts. Automaton has 27833 states and 37271 transitions. Word has length 303 [2020-10-28 12:34:36,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:34:36,894 INFO L481 AbstractCegarLoop]: Abstraction has 27833 states and 37271 transitions. [2020-10-28 12:34:36,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:34:36,895 INFO L276 IsEmpty]: Start isEmpty. Operand 27833 states and 37271 transitions. [2020-10-28 12:34:36,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-28 12:34:36,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:34:36,903 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:34:36,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:34:36,903 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:34:36,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:34:36,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1254448386, now seen corresponding path program 1 times [2020-10-28 12:34:36,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:34:36,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140592214] [2020-10-28 12:34:36,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:34:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:37,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:37,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:37,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:40,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:41,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:42,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:42,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-28 12:34:42,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:34:42,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-28 12:34:42,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:42,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:42,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:34:42,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 12:34:42,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-28 12:34:42,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:34:42,248 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:34:42,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:34:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:42,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:42,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:42,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:34:42,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:42,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:34:42,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:42,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:34:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:34:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:34:42,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:34:42,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:34:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:42,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:42,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:42,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:34:42,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:42,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 12:34:42,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:42,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:42,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:34:42,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:34:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:34:42,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:34:42,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:34:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:42,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:42,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:42,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:42,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 12:34:42,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:34:42,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-28 12:34:42,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:42,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:42,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:34:42,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:34:42,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 12:34:42,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:34:42,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-28 12:34:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:42,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:43,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:43,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:34:43,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:43,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-28 12:34:43,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:43,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:34:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:34:43,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 12:34:43,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:34:43,300 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 239 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-28 12:34:43,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140592214] [2020-10-28 12:34:43,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:34:43,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:34:43,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349777014] [2020-10-28 12:34:43,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:34:43,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:34:43,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:34:43,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:34:43,305 INFO L87 Difference]: Start difference. First operand 27833 states and 37271 transitions. Second operand 7 states. [2020-10-28 12:34:48,153 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:35:20,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:35:20,440 INFO L93 Difference]: Finished difference Result 69681 states and 99299 transitions. [2020-10-28 12:35:20,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:35:20,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 305 [2020-10-28 12:35:20,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:35:20,678 INFO L225 Difference]: With dead ends: 69681 [2020-10-28 12:35:20,679 INFO L226 Difference]: Without dead ends: 42657 [2020-10-28 12:35:20,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:35:20,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42657 states. [2020-10-28 12:35:22,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42657 to 42383. [2020-10-28 12:35:22,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42383 states. [2020-10-28 12:35:22,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42383 states to 42383 states and 55660 transitions. [2020-10-28 12:35:22,624 INFO L78 Accepts]: Start accepts. Automaton has 42383 states and 55660 transitions. Word has length 305 [2020-10-28 12:35:22,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:35:22,625 INFO L481 AbstractCegarLoop]: Abstraction has 42383 states and 55660 transitions. [2020-10-28 12:35:22,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:35:22,626 INFO L276 IsEmpty]: Start isEmpty. Operand 42383 states and 55660 transitions. [2020-10-28 12:35:22,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-28 12:35:22,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:35:22,640 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:35:22,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:35:22,641 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:35:22,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:35:22,642 INFO L82 PathProgramCache]: Analyzing trace with hash 1723126235, now seen corresponding path program 1 times [2020-10-28 12:35:22,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:35:22,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [461413197] [2020-10-28 12:35:22,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:35:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:22,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:22,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:23,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:23,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:24,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:24,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:24,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:25,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:25,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking...