/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:11:10,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:11:10,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:11:10,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 18:11:10,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:11:10,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:11:10,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:11:10,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:11:10,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:11:10,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:11:10,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:11:10,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:11:10,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:11:10,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:11:10,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:11:10,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:11:10,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:11:10,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:11:10,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:11:10,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:11:10,528 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:11:10,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:11:10,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:11:10,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:11:10,559 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:11:10,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:11:10,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:11:10,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:11:10,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:11:10,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:11:10,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:11:10,562 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:11:10,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:11:10,563 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:11:10,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:11:10,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:11:10,563 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:11:10,564 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:11:10,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:11:10,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:11:10,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:11:10,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:11:10,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:11:10,565 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:11:10,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:11:11,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:11:11,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:11:11,005 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:11:11,006 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:11:11,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label22.c [2021-02-23 18:11:11,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a72ad98f9/05531fbe0dd54000a78ef3445aff0ffd/FLAG718b069ba [2021-02-23 18:11:11,957 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:11:11,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label22.c [2021-02-23 18:11:11,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a72ad98f9/05531fbe0dd54000a78ef3445aff0ffd/FLAG718b069ba [2021-02-23 18:11:12,176 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a72ad98f9/05531fbe0dd54000a78ef3445aff0ffd [2021-02-23 18:11:12,182 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:11:12,194 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:11:12,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:11:12,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:11:12,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:11:12,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:11:12" (1/1) ... [2021-02-23 18:11:12,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46c1da86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:11:12, skipping insertion in model container [2021-02-23 18:11:12,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:11:12" (1/1) ... [2021-02-23 18:11:12,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:11:12,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:11:12,684 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label22.c[21338,21351] [2021-02-23 18:11:12,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:11:12,738 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:11:12,904 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label22.c[21338,21351] [2021-02-23 18:11:12,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:11:12,946 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:11:12,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:11:12 WrapperNode [2021-02-23 18:11:12,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:11:12,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:11:12,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:11:12,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:11:12,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:11:12" (1/1) ... [2021-02-23 18:11:12,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:11:12" (1/1) ... [2021-02-23 18:11:13,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:11:12" (1/1) ... [2021-02-23 18:11:13,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:11:12" (1/1) ... [2021-02-23 18:11:13,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:11:12" (1/1) ... [2021-02-23 18:11:13,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:11:12" (1/1) ... [2021-02-23 18:11:13,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:11:12" (1/1) ... [2021-02-23 18:11:13,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:11:13,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:11:13,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:11:13,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:11:13,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:11:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-23 18:11:13,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:11:13,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:11:13,220 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:11:13,220 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2021-02-23 18:11:13,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:11:13,220 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2021-02-23 18:11:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:11:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:11:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:11:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:11:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:11:13,221 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 18:11:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:11:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:11:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:11:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:11:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:11:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:11:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:11:15,111 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:11:15,112 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 18:11:15,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:11:15 BoogieIcfgContainer [2021-02-23 18:11:15,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:11:15,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:11:15,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:11:15,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:11:15,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:11:12" (1/3) ... [2021-02-23 18:11:15,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7aa739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:11:15, skipping insertion in model container [2021-02-23 18:11:15,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:11:12" (2/3) ... [2021-02-23 18:11:15,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7aa739 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:11:15, skipping insertion in model container [2021-02-23 18:11:15,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:11:15" (3/3) ... [2021-02-23 18:11:15,125 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label22.c [2021-02-23 18:11:15,133 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:11:15,139 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:11:15,159 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:11:15,186 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:11:15,186 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:11:15,186 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:11:15,186 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:11:15,186 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:11:15,187 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:11:15,187 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:11:15,187 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:11:15,215 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states. [2021-02-23 18:11:15,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-02-23 18:11:15,244 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:11:15,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:11:15,246 INFO L428 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:11:15,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:11:15,254 INFO L82 PathProgramCache]: Analyzing trace with hash -677990325, now seen corresponding path program 1 times [2021-02-23 18:11:15,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:11:15,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746879077] [2021-02-23 18:11:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:11:15,355 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:11:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:15,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:15,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:11:15,881 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:15,882 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:11:15,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:15,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:11:15,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:15,897 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:16,055 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-02-23 18:11:16,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:11:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:16,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:16,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:16,099 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:16,099 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:11:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:11:16,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746879077] [2021-02-23 18:11:16,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:11:16,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 18:11:16,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158732084] [2021-02-23 18:11:16,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 18:11:16,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:11:16,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 18:11:16,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 18:11:16,246 INFO L87 Difference]: Start difference. First operand 534 states. Second operand 4 states. [2021-02-23 18:11:16,586 WARN L202 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-02-23 18:11:19,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:11:19,244 INFO L93 Difference]: Finished difference Result 1244 states and 1642 transitions. [2021-02-23 18:11:19,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 18:11:19,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2021-02-23 18:11:19,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:11:19,281 INFO L225 Difference]: With dead ends: 1244 [2021-02-23 18:11:19,281 INFO L226 Difference]: Without dead ends: 669 [2021-02-23 18:11:19,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:11:19,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-02-23 18:11:19,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 613. [2021-02-23 18:11:19,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2021-02-23 18:11:19,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 723 transitions. [2021-02-23 18:11:19,524 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 723 transitions. Word has length 163 [2021-02-23 18:11:19,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:11:19,528 INFO L480 AbstractCegarLoop]: Abstraction has 613 states and 723 transitions. [2021-02-23 18:11:19,528 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 18:11:19,528 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 723 transitions. [2021-02-23 18:11:19,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-02-23 18:11:19,542 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:11:19,543 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:11:19,543 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:11:19,543 INFO L428 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:11:19,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:11:19,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2073678013, now seen corresponding path program 1 times [2021-02-23 18:11:19,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:11:19,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424144500] [2021-02-23 18:11:19,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:11:19,881 WARN L141 QuantifierPusher]: treesize reduction 24, result has 94.3 percent of original size [2021-02-23 18:11:19,917 WARN L147 QuantifierPusher]: treesize reduction 24, result has 94.3 percent of original size 394 [2021-02-23 18:11:20,087 WARN L141 QuantifierPusher]: treesize reduction 207, result has 50.5 percent of original size [2021-02-23 18:11:20,099 WARN L147 QuantifierPusher]: treesize reduction 207, result has 50.5 percent of original size 211 [2021-02-23 18:11:20,239 WARN L141 QuantifierPusher]: treesize reduction 207, result has 50.5 percent of original size [2021-02-23 18:11:20,248 WARN L147 QuantifierPusher]: treesize reduction 207, result has 50.5 percent of original size 211 [2021-02-23 18:11:20,373 WARN L141 QuantifierPusher]: treesize reduction 207, result has 50.5 percent of original size [2021-02-23 18:11:20,380 WARN L147 QuantifierPusher]: treesize reduction 207, result has 50.5 percent of original size 211 [2021-02-23 18:11:20,381 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-23 18:11:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:20,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:20,742 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:11:20,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:20,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:11:20,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:20,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:11:20,770 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:20,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:11:20,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:20,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:11:20,791 WARN L141 QuantifierPusher]: treesize reduction 36, result has 20.0 percent of original size [2021-02-23 18:11:20,792 WARN L147 QuantifierPusher]: treesize reduction 36, result has 20.0 percent of original size 9 [2021-02-23 18:11:20,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:20,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-23 18:11:20,805 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:20,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:20,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:11:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:11:20,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:20,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:11:20,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:20,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:11:20,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:20,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:11:20,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:20,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:11:21,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:11:21,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 218 [2021-02-23 18:11:21,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:11:21,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,138 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-02-23 18:11:21,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-02-23 18:11:21,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-23 18:11:21,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 215 [2021-02-23 18:11:21,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216 [2021-02-23 18:11:21,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:11:21,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:11:21,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:11:21,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-23 18:11:21,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:11:21,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-23 18:11:21,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-02-23 18:11:21,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-23 18:11:21,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-23 18:11:21,484 WARN L141 QuantifierPusher]: treesize reduction 14, result has 77.0 percent of original size [2021-02-23 18:11:21,486 WARN L147 QuantifierPusher]: treesize reduction 14, result has 77.0 percent of original size 47 [2021-02-23 18:11:21,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-23 18:11:21,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-23 18:11:21,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 18:11:21,621 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 18:11:21,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-23 18:11:21,666 WARN L141 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-02-23 18:11:21,667 WARN L147 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size 28 [2021-02-23 18:11:21,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-23 18:11:21,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:11:21,710 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-23 18:11:21,748 WARN L141 QuantifierPusher]: treesize reduction 32, result has 3.0 percent of original size [2021-02-23 18:11:21,748 WARN L147 QuantifierPusher]: treesize reduction 32, result has 3.0 percent of original size 1 [2021-02-23 18:11:21,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424144500] [2021-02-23 18:11:21,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:11:21,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-23 18:11:21,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831360444] [2021-02-23 18:11:21,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-23 18:11:21,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:11:21,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-23 18:11:21,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2021-02-23 18:11:21,760 INFO L87 Difference]: Start difference. First operand 613 states and 723 transitions. Second operand 19 states. [2021-02-23 18:11:22,202 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-23 18:11:22,330 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-23 18:11:22,472 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-02-23 18:11:22,596 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-02-23 18:11:22,726 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-02-23 18:11:22,867 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-02-23 18:11:23,572 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-02-23 18:11:28,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:11:28,595 INFO L93 Difference]: Finished difference Result 2595 states and 3333 transitions. [2021-02-23 18:11:28,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 18:11:28,596 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 180 [2021-02-23 18:11:28,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:11:28,613 INFO L225 Difference]: With dead ends: 2595 [2021-02-23 18:11:28,614 INFO L226 Difference]: Without dead ends: 2014 [2021-02-23 18:11:28,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=324, Invalid=798, Unknown=0, NotChecked=0, Total=1122 [2021-02-23 18:11:28,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2021-02-23 18:11:28,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1434. [2021-02-23 18:11:28,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1434 states. [2021-02-23 18:11:29,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 1765 transitions. [2021-02-23 18:11:29,008 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 1765 transitions. Word has length 180 [2021-02-23 18:11:29,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:11:29,010 INFO L480 AbstractCegarLoop]: Abstraction has 1434 states and 1765 transitions. [2021-02-23 18:11:29,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-23 18:11:29,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 1765 transitions. [2021-02-23 18:11:29,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-02-23 18:11:29,020 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:11:29,022 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:11:29,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:11:29,022 INFO L428 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:11:29,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:11:29,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1899003881, now seen corresponding path program 1 times [2021-02-23 18:11:29,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:11:29,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772514115] [2021-02-23 18:11:29,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:11:29,074 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 17