/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_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:45:16,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:45:16,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:45:16,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 20:45:16,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:45:16,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:45:16,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:45:16,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:45:16,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:45:16,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:45:16,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:45:16,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:45:16,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:45:16,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:45:16,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:45:16,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:45:16,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:45:16,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:45:16,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:45:16,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:45:17,001 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:45:17,021 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:45:17,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:45:17,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:45:17,024 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:45:17,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:45:17,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:45:17,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:45:17,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:45:17,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:45:17,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:45:17,025 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:45:17,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:45:17,026 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:45:17,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:45:17,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:45:17,026 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:45:17,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:45:17,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:45:17,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:45:17,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:45:17,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:45:17,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:45:17,028 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:45:17,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:45:17,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:45:17,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:45:17,424 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:45:17,425 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:45:17,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label43.c [2021-02-21 20:45:17,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6caa37564/47e4063039074dff97c33302824276c7/FLAG24c24a626 [2021-02-21 20:45:18,292 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:45:18,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label43.c [2021-02-21 20:45:18,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6caa37564/47e4063039074dff97c33302824276c7/FLAG24c24a626 [2021-02-21 20:45:18,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6caa37564/47e4063039074dff97c33302824276c7 [2021-02-21 20:45:18,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:45:18,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:45:18,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:45:18,529 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:45:18,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:45:18,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:45:18" (1/1) ... [2021-02-21 20:45:18,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63305871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:18, skipping insertion in model container [2021-02-21 20:45:18,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:45:18" (1/1) ... [2021-02-21 20:45:18,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:45:18,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:45:19,098 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_label43.c[21463,21476] [2021-02-21 20:45:19,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:45:19,163 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:45:19,305 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_label43.c[21463,21476] [2021-02-21 20:45:19,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:45:19,329 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:45:19,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:19 WrapperNode [2021-02-21 20:45:19,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:45:19,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:45:19,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:45:19,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:45:19,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:19" (1/1) ... [2021-02-21 20:45:19,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:19" (1/1) ... [2021-02-21 20:45:19,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:19" (1/1) ... [2021-02-21 20:45:19,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:19" (1/1) ... [2021-02-21 20:45:19,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:19" (1/1) ... [2021-02-21 20:45:19,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:19" (1/1) ... [2021-02-21 20:45:19,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:19" (1/1) ... [2021-02-21 20:45:19,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:45:19,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:45:19,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:45:19,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:45:19,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:19" (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 [2021-02-21 20:45:19,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:45:19,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:45:19,595 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:45:19,595 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2021-02-21 20:45:19,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:45:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2021-02-21 20:45:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:45:19,596 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:45:19,596 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:45:19,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:45:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:45:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 20:45:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:45:19,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:45:19,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:45:19,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:45:19,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:45:19,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:45:19,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:45:20,851 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:45:20,851 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 20:45:20,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:45:20 BoogieIcfgContainer [2021-02-21 20:45:20,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:45:20,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:45:20,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:45:20,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:45:20,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:45:18" (1/3) ... [2021-02-21 20:45:20,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df03017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:45:20, skipping insertion in model container [2021-02-21 20:45:20,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:19" (2/3) ... [2021-02-21 20:45:20,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7df03017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:45:20, skipping insertion in model container [2021-02-21 20:45:20,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:45:20" (3/3) ... [2021-02-21 20:45:20,869 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label43.c [2021-02-21 20:45:20,876 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:45:20,882 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:45:20,901 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:45:20,936 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:45:20,937 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:45:20,937 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:45:20,937 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:45:20,937 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:45:20,937 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:45:20,937 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:45:20,938 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:45:20,981 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states. [2021-02-21 20:45:21,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-02-21 20:45:21,019 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:45:21,020 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, 1] [2021-02-21 20:45:21,020 INFO L428 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:45:21,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:45:21,026 INFO L82 PathProgramCache]: Analyzing trace with hash 457141502, now seen corresponding path program 1 times [2021-02-21 20:45:21,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:45:21,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410791455] [2021-02-21 20:45:21,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:45:21,099 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:45:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:45:21,555 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:21,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:45:21,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:21,570 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:45:21,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:21,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:45:21,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:21,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:45:21,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:45:21,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:45:21,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:21,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:45:21,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:21,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:45:21,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:45:21,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410791455] [2021-02-21 20:45:21,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:45:21,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:45:21,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398339968] [2021-02-21 20:45:21,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:45:21,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:45:21,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:45:21,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:45:21,804 INFO L87 Difference]: Start difference. First operand 534 states. Second operand 4 states. [2021-02-21 20:45:24,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:45:24,423 INFO L93 Difference]: Finished difference Result 1244 states and 1642 transitions. [2021-02-21 20:45:24,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 20:45:24,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2021-02-21 20:45:24,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:45:24,449 INFO L225 Difference]: With dead ends: 1244 [2021-02-21 20:45:24,449 INFO L226 Difference]: Without dead ends: 669 [2021-02-21 20:45:24,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 20:45:24,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2021-02-21 20:45:24,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 613. [2021-02-21 20:45:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2021-02-21 20:45:24,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 723 transitions. [2021-02-21 20:45:24,747 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 723 transitions. Word has length 164 [2021-02-21 20:45:24,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:45:24,751 INFO L480 AbstractCegarLoop]: Abstraction has 613 states and 723 transitions. [2021-02-21 20:45:24,751 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:45:24,751 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 723 transitions. [2021-02-21 20:45:24,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-02-21 20:45:24,762 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:45:24,763 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, 1] [2021-02-21 20:45:24,763 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:45:24,764 INFO L428 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:45:24,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:45:24,765 INFO L82 PathProgramCache]: Analyzing trace with hash -140485940, now seen corresponding path program 1 times [2021-02-21 20:45:24,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:45:24,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971235991] [2021-02-21 20:45:24,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:45:25,120 WARN L141 QuantifierPusher]: treesize reduction 24, result has 94.3 percent of original size [2021-02-21 20:45:25,155 WARN L147 QuantifierPusher]: treesize reduction 24, result has 94.3 percent of original size 394 [2021-02-21 20:45:25,362 WARN L141 QuantifierPusher]: treesize reduction 207, result has 50.5 percent of original size [2021-02-21 20:45:25,373 WARN L147 QuantifierPusher]: treesize reduction 207, result has 50.5 percent of original size 211 [2021-02-21 20:45:25,537 WARN L141 QuantifierPusher]: treesize reduction 207, result has 50.5 percent of original size [2021-02-21 20:45:25,549 WARN L147 QuantifierPusher]: treesize reduction 207, result has 50.5 percent of original size 211 [2021-02-21 20:45:25,700 WARN L141 QuantifierPusher]: treesize reduction 207, result has 50.5 percent of original size [2021-02-21 20:45:25,711 WARN L147 QuantifierPusher]: treesize reduction 207, result has 50.5 percent of original size 211 [2021-02-21 20:45:25,713 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 20:45:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:45:26,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:45:26,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:45:26,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:45:26,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:45:26,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:45:26,211 WARN L141 QuantifierPusher]: treesize reduction 33, result has 21.4 percent of original size [2021-02-21 20:45:26,212 WARN L147 QuantifierPusher]: treesize reduction 33, result has 21.4 percent of original size 9 [2021-02-21 20:45:26,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:45:26,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:45:26,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:45:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:45:26,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,349 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:45:26,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:45:26,361 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:45:26,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:45:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:45:26,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 218 [2021-02-21 20:45:26,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:26,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 214 [2021-02-21 20:45:26,546 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 215 [2021-02-21 20:45:26,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:26,558 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-02-21 20:45:26,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 212 [2021-02-21 20:45:26,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:45:26,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:45:26,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:45:26,646 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,647 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 20:45:26,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-21 20:45:26,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-21 20:45:26,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 69 [2021-02-21 20:45:26,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-21 20:45:26,832 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-21 20:45:26,868 WARN L141 QuantifierPusher]: treesize reduction 14, result has 77.0 percent of original size [2021-02-21 20:45:26,870 WARN L147 QuantifierPusher]: treesize reduction 14, result has 77.0 percent of original size 47 [2021-02-21 20:45:26,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-21 20:45:26,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-21 20:45:26,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:26,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 20:45:27,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:27,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 20:45:27,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:27,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-02-21 20:45:27,087 WARN L141 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size [2021-02-21 20:45:27,088 WARN L147 QuantifierPusher]: treesize reduction 8, result has 77.8 percent of original size 28 [2021-02-21 20:45:27,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:27,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-21 20:45:27,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:27,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-21 20:45:27,174 WARN L141 QuantifierPusher]: treesize reduction 32, result has 3.0 percent of original size [2021-02-21 20:45:27,175 WARN L147 QuantifierPusher]: treesize reduction 32, result has 3.0 percent of original size 1 [2021-02-21 20:45:27,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971235991] [2021-02-21 20:45:27,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:45:27,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-02-21 20:45:27,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361547715] [2021-02-21 20:45:27,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-21 20:45:27,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:45:27,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-21 20:45:27,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=312, Unknown=0, NotChecked=0, Total=462 [2021-02-21 20:45:27,186 INFO L87 Difference]: Start difference. First operand 613 states and 723 transitions. Second operand 19 states. [2021-02-21 20:45:27,500 WARN L202 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-02-21 20:45:27,625 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-02-21 20:45:27,875 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-02-21 20:45:27,999 WARN L202 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-02-21 20:45:28,128 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-02-21 20:45:28,283 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-02-21 20:45:28,685 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-02-21 20:45:34,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:45:34,713 INFO L93 Difference]: Finished difference Result 2891 states and 3765 transitions. [2021-02-21 20:45:34,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-21 20:45:34,714 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 181 [2021-02-21 20:45:34,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:45:34,736 INFO L225 Difference]: With dead ends: 2891 [2021-02-21 20:45:34,736 INFO L226 Difference]: Without dead ends: 2310 [2021-02-21 20:45:34,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=337, Invalid=853, Unknown=0, NotChecked=0, Total=1190 [2021-02-21 20:45:34,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2021-02-21 20:45:35,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 1586. [2021-02-21 20:45:35,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1586 states. [2021-02-21 20:45:35,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 1979 transitions. [2021-02-21 20:45:35,223 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 1979 transitions. Word has length 181 [2021-02-21 20:45:35,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:45:35,225 INFO L480 AbstractCegarLoop]: Abstraction has 1586 states and 1979 transitions. [2021-02-21 20:45:35,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2021-02-21 20:45:35,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 1979 transitions. [2021-02-21 20:45:35,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-02-21 20:45:35,235 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:45:35,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:45:35,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:45:35,236 INFO L428 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:45:35,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:45:35,237 INFO L82 PathProgramCache]: Analyzing trace with hash 2087284842, now seen corresponding path program 1 times [2021-02-21 20:45:35,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:45:35,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566492796] [2021-02-21 20:45:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:45:35,276 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 11 [2021-02-21 20:45:52,577 WARN L177 XnfTransformerHelper]: Simplifying disjunction of 787610 conjuctions. This might take some time...