/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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:45:26,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:45:26,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:45:26,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 20:45:26,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:45:26,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:45:26,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:45:26,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:45:26,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:45:26,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:45:26,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:45:26,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:45:26,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:45:26,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:45:26,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:45:27,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:45:27,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:45:27,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:45:27,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:45:27,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:45:27,028 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 20:45:27,053 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:45:27,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:45:27,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:45:27,058 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:45:27,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:45:27,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:45:27,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:45:27,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:45:27,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:45:27,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:45:27,061 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:45:27,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:45:27,062 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:45:27,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:45:27,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:45:27,064 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:45:27,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:45:27,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:45:27,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:45:27,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:45:27,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:45:27,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:45:27,066 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:45:27,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:45:27,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:45:27,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:45:27,530 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:45:27,535 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:45:27,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2021-02-21 20:45:27,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d6970ce1/af1c12eb84cd473e99f6a1f35f53b7b8/FLAG89b32be9c [2021-02-21 20:45:28,383 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:45:28,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label44.c [2021-02-21 20:45:28,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d6970ce1/af1c12eb84cd473e99f6a1f35f53b7b8/FLAG89b32be9c [2021-02-21 20:45:28,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d6970ce1/af1c12eb84cd473e99f6a1f35f53b7b8 [2021-02-21 20:45:28,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:45:28,672 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:45:28,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:45:28,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:45:28,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:45:28,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:45:28" (1/1) ... [2021-02-21 20:45:28,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47638dad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:28, skipping insertion in model container [2021-02-21 20:45:28,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:45:28" (1/1) ... [2021-02-21 20:45:28,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:45:28,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:45:29,148 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_label44.c[16002,16015] [2021-02-21 20:45:29,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:45:29,194 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:45:29,340 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_label44.c[16002,16015] [2021-02-21 20:45:29,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:45:29,405 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:45:29,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:29 WrapperNode [2021-02-21 20:45:29,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:45:29,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:45:29,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:45:29,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:45:29,424 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:29" (1/1) ... [2021-02-21 20:45:29,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:29" (1/1) ... [2021-02-21 20:45:29,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:29" (1/1) ... [2021-02-21 20:45:29,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:29" (1/1) ... [2021-02-21 20:45:29,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:29" (1/1) ... [2021-02-21 20:45:29,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:29" (1/1) ... [2021-02-21 20:45:29,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:29" (1/1) ... [2021-02-21 20:45:29,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:45:29,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:45:29,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:45:29,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:45:29,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:29" (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 20:45:29,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:45:29,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:45:29,678 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:45:29,678 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2021-02-21 20:45:29,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:45:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2021-02-21 20:45:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:45:29,678 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:45:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:45:29,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:45:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:45:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 20:45:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:45:29,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:45:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:45:29,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:45:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:45:29,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:45:29,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:45:31,030 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:45:31,030 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 20:45:31,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:45:31 BoogieIcfgContainer [2021-02-21 20:45:31,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:45:31,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:45:31,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:45:31,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:45:31,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:45:28" (1/3) ... [2021-02-21 20:45:31,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f994b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:45:31, skipping insertion in model container [2021-02-21 20:45:31,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:45:29" (2/3) ... [2021-02-21 20:45:31,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f994b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:45:31, skipping insertion in model container [2021-02-21 20:45:31,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:45:31" (3/3) ... [2021-02-21 20:45:31,043 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem01_label44.c [2021-02-21 20:45:31,050 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:45:31,056 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:45:31,076 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:45:31,102 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:45:31,102 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:45:31,103 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:45:31,103 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:45:31,103 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:45:31,103 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:45:31,103 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:45:31,103 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:45:31,132 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states. [2021-02-21 20:45:31,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-02-21 20:45:31,158 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:45:31,159 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] [2021-02-21 20:45:31,160 INFO L428 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:45:31,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:45:31,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1600770702, now seen corresponding path program 1 times [2021-02-21 20:45:31,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:45:31,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905935589] [2021-02-21 20:45:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:45:31,243 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:45:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:45:31,726 WARN L141 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size [2021-02-21 20:45:31,729 WARN L147 QuantifierPusher]: treesize reduction 17, result has 19.0 percent of original size 4 [2021-02-21 20:45:31,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:31,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:45:31,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:31,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:45:31,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:31,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:45:31,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:45:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:45:31,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:31,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:45:31,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:31,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:45:31,969 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 20:45:31,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905935589] [2021-02-21 20:45:31,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:45:31,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 20:45:31,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370495430] [2021-02-21 20:45:31,978 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 20:45:31,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:45:31,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 20:45:31,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 20:45:31,996 INFO L87 Difference]: Start difference. First operand 534 states. Second operand 5 states. [2021-02-21 20:45:34,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:45:34,429 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2021-02-21 20:45:34,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 20:45:34,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2021-02-21 20:45:34,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:45:34,456 INFO L225 Difference]: With dead ends: 1268 [2021-02-21 20:45:34,456 INFO L226 Difference]: Without dead ends: 693 [2021-02-21 20:45:34,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:45:34,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2021-02-21 20:45:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 611. [2021-02-21 20:45:34,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2021-02-21 20:45:34,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 733 transitions. [2021-02-21 20:45:34,700 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 733 transitions. Word has length 120 [2021-02-21 20:45:34,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:45:34,701 INFO L480 AbstractCegarLoop]: Abstraction has 611 states and 733 transitions. [2021-02-21 20:45:34,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 20:45:34,702 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 733 transitions. [2021-02-21 20:45:34,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-02-21 20:45:34,712 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:45:34,713 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-21 20:45:34,713 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:45:34,713 INFO L428 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:45:34,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:45:34,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1281196210, now seen corresponding path program 1 times [2021-02-21 20:45:34,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:45:34,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765440239] [2021-02-21 20:45:34,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:45:34,985 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.7 percent of original size [2021-02-21 20:45:35,016 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.7 percent of original size 214 [2021-02-21 20:45:35,190 WARN L141 QuantifierPusher]: treesize reduction 210, result has 50.5 percent of original size [2021-02-21 20:45:35,202 WARN L147 QuantifierPusher]: treesize reduction 210, result has 50.5 percent of original size 214 [2021-02-21 20:45:35,333 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.7 percent of original size [2021-02-21 20:45:35,346 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.7 percent of original size 214 [2021-02-21 20:45:35,503 WARN L141 QuantifierPusher]: treesize reduction 210, result has 50.5 percent of original size [2021-02-21 20:45:35,511 WARN L147 QuantifierPusher]: treesize reduction 210, result has 50.5 percent of original size 214 [2021-02-21 20:45:35,513 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 20:45:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:45:35,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:35,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:45:35,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:35,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:45:35,935 WARN L141 QuantifierPusher]: treesize reduction 8, result has 57.9 percent of original size [2021-02-21 20:45:35,936 WARN L147 QuantifierPusher]: treesize reduction 8, result has 57.9 percent of original size 11 [2021-02-21 20:45:35,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:35,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:45:35,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:35,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 20:45:35,988 WARN L141 QuantifierPusher]: treesize reduction 64, result has 28.1 percent of original size [2021-02-21 20:45:35,989 WARN L147 QuantifierPusher]: treesize reduction 64, result has 28.1 percent of original size 25 [2021-02-21 20:45:36,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 20:45:36,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:45:36,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:45:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:45:36,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:45:36,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:45:36,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,145 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:45:36,257 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 20:45:36,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:36,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-02-21 20:45:36,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 218 [2021-02-21 20:45:36,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:36,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-02-21 20:45:36,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 223 [2021-02-21 20:45:36,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:36,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 229 [2021-02-21 20:45:36,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 230 [2021-02-21 20:45:36,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:36,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-02-21 20:45:36,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-02-21 20:45:36,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:36,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-02-21 20:45:36,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 210 [2021-02-21 20:45:36,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:36,510 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-02-21 20:45:36,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 219 [2021-02-21 20:45:36,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:36,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-02-21 20:45:36,588 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 222 [2021-02-21 20:45:36,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:36,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-02-21 20:45:36,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 223 [2021-02-21 20:45:36,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:36,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-02-21 20:45:36,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-02-21 20:45:36,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:36,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:36,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-02-21 20:45:36,900 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 270 [2021-02-21 20:45:36,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:37,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:37,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:37,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-02-21 20:45:37,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 234 [2021-02-21 20:45:37,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:37,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:37,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:37,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-02-21 20:45:37,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 233 [2021-02-21 20:45:37,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:37,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:37,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:37,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-02-21 20:45:37,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 270 [2021-02-21 20:45:37,433 WARN L202 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 127 [2021-02-21 20:45:37,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:37,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:37,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:37,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-02-21 20:45:37,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 317 [2021-02-21 20:45:37,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:37,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:37,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:37,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-02-21 20:45:37,584 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 298 [2021-02-21 20:45:37,860 WARN L202 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 130 [2021-02-21 20:45:37,868 WARN L141 QuantifierPusher]: treesize reduction 62, result has 80.9 percent of original size [2021-02-21 20:45:37,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:37,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:37,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 209 [2021-02-21 20:45:37,879 WARN L147 QuantifierPusher]: treesize reduction 62, result has 80.9 percent of original size 262 [2021-02-21 20:45:38,029 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:38,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 243 [2021-02-21 20:45:38,120 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:38,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-21 20:45:38,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:38,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-21 20:45:38,238 WARN L141 QuantifierPusher]: treesize reduction -2, result has 106.5 percent of original size [2021-02-21 20:45:38,239 WARN L147 QuantifierPusher]: treesize reduction -2, result has 106.5 percent of original size 33 [2021-02-21 20:45:38,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:38,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-21 20:45:38,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:38,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-02-21 20:45:38,373 WARN L141 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size [2021-02-21 20:45:38,374 WARN L147 QuantifierPusher]: treesize reduction 8, result has 78.9 percent of original size 30 [2021-02-21 20:45:38,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:38,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-21 20:45:38,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:38,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-21 20:45:38,519 WARN L141 QuantifierPusher]: treesize reduction 12, result has 72.1 percent of original size [2021-02-21 20:45:38,520 WARN L147 QuantifierPusher]: treesize reduction 12, result has 72.1 percent of original size 31 [2021-02-21 20:45:38,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765440239] [2021-02-21 20:45:38,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:45:38,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-02-21 20:45:38,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542482225] [2021-02-21 20:45:38,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-21 20:45:38,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:45:38,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-21 20:45:38,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2021-02-21 20:45:38,526 INFO L87 Difference]: Start difference. First operand 611 states and 733 transitions. Second operand 24 states. [2021-02-21 20:45:39,075 WARN L202 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 180 [2021-02-21 20:45:39,317 WARN L202 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 182 [2021-02-21 20:45:39,533 WARN L202 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 98 [2021-02-21 20:45:39,773 WARN L202 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 105 [2021-02-21 20:45:40,006 WARN L202 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 105 [2021-02-21 20:45:40,248 WARN L202 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 107 [2021-02-21 20:45:40,553 WARN L202 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 127 [2021-02-21 20:45:41,068 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 130 [2021-02-21 20:45:41,398 WARN L202 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-02-21 20:45:41,856 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 50 [2021-02-21 20:45:43,080 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2021-02-21 20:45:43,422 WARN L202 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2021-02-21 20:45:43,702 WARN L202 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 20:45:44,079 WARN L202 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 20:45:44,267 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 97 [2021-02-21 20:45:53,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:45:53,942 INFO L93 Difference]: Finished difference Result 2680 states and 3583 transitions. [2021-02-21 20:45:53,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-02-21 20:45:53,943 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 141 [2021-02-21 20:45:53,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:45:53,961 INFO L225 Difference]: With dead ends: 2680 [2021-02-21 20:45:53,962 INFO L226 Difference]: Without dead ends: 2101 [2021-02-21 20:45:53,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=600, Invalid=2156, Unknown=0, NotChecked=0, Total=2756 [2021-02-21 20:45:53,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2021-02-21 20:45:54,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 1562. [2021-02-21 20:45:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1562 states. [2021-02-21 20:45:54,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 2011 transitions. [2021-02-21 20:45:54,532 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 2011 transitions. Word has length 141 [2021-02-21 20:45:54,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:45:54,533 INFO L480 AbstractCegarLoop]: Abstraction has 1562 states and 2011 transitions. [2021-02-21 20:45:54,534 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2021-02-21 20:45:54,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 2011 transitions. [2021-02-21 20:45:54,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-02-21 20:45:54,541 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:45:54,542 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-21 20:45:54,542 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:45:54,542 INFO L428 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:45:54,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:45:54,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1382191263, now seen corresponding path program 1 times [2021-02-21 20:45:54,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:45:54,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143505642] [2021-02-21 20:45:54,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:45:54,657 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.9 percent of original size [2021-02-21 20:45:54,661 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.9 percent of original size 186 [2021-02-21 20:45:54,744 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.9 percent of original size [2021-02-21 20:45:54,747 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.9 percent of original size 186 [2021-02-21 20:45:54,828 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.9 percent of original size [2021-02-21 20:45:54,831 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.9 percent of original size 186 [2021-02-21 20:45:54,910 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.9 percent of original size [2021-02-21 20:45:54,913 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.9 percent of original size 186 [2021-02-21 20:45:54,997 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.2 percent of original size [2021-02-21 20:45:55,001 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.2 percent of original size 196 [2021-02-21 20:45:55,082 WARN L141 QuantifierPusher]: treesize reduction 12, result has 94.2 percent of original size [2021-02-21 20:45:55,086 WARN L147 QuantifierPusher]: treesize reduction 12, result has 94.2 percent of original size 196 [2021-02-21 20:45:55,207 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.9 percent of original size [2021-02-21 20:45:55,210 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.9 percent of original size 186 [2021-02-21 20:45:55,298 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.9 percent of original size [2021-02-21 20:45:55,302 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.9 percent of original size 186 [2021-02-21 20:45:55,389 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.9 percent of original size [2021-02-21 20:45:55,392 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.9 percent of original size 186 [2021-02-21 20:45:55,477 WARN L141 QuantifierPusher]: treesize reduction 12, result has 93.9 percent of original size [2021-02-21 20:45:55,480 WARN L147 QuantifierPusher]: treesize reduction 12, result has 93.9 percent of original size 186 [2021-02-21 20:45:55,481 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-21 20:45:55,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:45:55,767 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:55,768 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 20:45:55,776 WARN L141 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size [2021-02-21 20:45:55,777 WARN L147 QuantifierPusher]: treesize reduction 5, result has 76.2 percent of original size 16 [2021-02-21 20:45:55,778 WARN L141 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size [2021-02-21 20:45:55,779 WARN L147 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size 16 [2021-02-21 20:45:55,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:55,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 20:45:55,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:55,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 20:45:55,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:55,800 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:45:55,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:55,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:45:55,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:55,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:45:55,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:55,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:45:55,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:55,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:45:55,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:55,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:45:55,845 WARN L141 QuantifierPusher]: treesize reduction 36, result has 20.0 percent of original size [2021-02-21 20:45:55,846 WARN L147 QuantifierPusher]: treesize reduction 36, result has 20.0 percent of original size 9 [2021-02-21 20:45:55,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:55,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:45:55,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:55,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:45:55,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:45:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:45:55,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:55,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:45:55,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:55,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:45:55,962 WARN L141 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size [2021-02-21 20:45:55,963 WARN L147 QuantifierPusher]: treesize reduction 4, result has 63.6 percent of original size 7 [2021-02-21 20:45:55,975 WARN L141 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size [2021-02-21 20:45:55,976 WARN L147 QuantifierPusher]: treesize reduction 4, result has 71.4 percent of original size 10 [2021-02-21 20:45:55,991 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-21 20:45:55,991 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-21 20:45:56,007 WARN L141 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size [2021-02-21 20:45:56,008 WARN L147 QuantifierPusher]: treesize reduction 6, result has 72.7 percent of original size 16 [2021-02-21 20:45:56,078 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 20:45:56,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 199 [2021-02-21 20:45:56,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:56,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 198 [2021-02-21 20:45:56,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 199 [2021-02-21 20:45:56,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:56,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-02-21 20:45:56,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 196 [2021-02-21 20:45:56,114 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:56,117 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,119 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 189 [2021-02-21 20:45:56,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-21 20:45:56,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:56,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 196 [2021-02-21 20:45:56,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 197 [2021-02-21 20:45:56,136 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:56,139 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,141 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 200 [2021-02-21 20:45:56,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 201 [2021-02-21 20:45:56,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 20:45:56,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 190 [2021-02-21 20:45:56,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 191 [2021-02-21 20:45:56,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 20:45:56,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 20:45:56,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-21 20:45:56,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 20:45:56,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,265 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 20:45:56,284 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-21 20:45:56,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-02-21 20:45:56,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-02-21 20:45:56,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-21 20:45:56,456 WARN L141 QuantifierPusher]: treesize reduction 12, result has 84.0 percent of original size [2021-02-21 20:45:56,459 WARN L147 QuantifierPusher]: treesize reduction 12, result has 84.0 percent of original size 63 [2021-02-21 20:45:56,519 WARN L141 QuantifierPusher]: treesize reduction 50, result has 55.8 percent of original size [2021-02-21 20:45:56,522 WARN L147 QuantifierPusher]: treesize reduction 50, result has 55.8 percent of original size 63 [2021-02-21 20:45:56,525 WARN L141 QuantifierPusher]: treesize reduction 31, result has 67.0 percent of original size [2021-02-21 20:45:56,526 WARN L147 QuantifierPusher]: treesize reduction 31, result has 67.0 percent of original size 63 [2021-02-21 20:45:56,528 WARN L141 QuantifierPusher]: treesize reduction 12, result has 88.0 percent of original size [2021-02-21 20:45:56,530 WARN L147 QuantifierPusher]: treesize reduction 12, result has 88.0 percent of original size 88 [2021-02-21 20:45:56,597 WARN L141 QuantifierPusher]: treesize reduction 56, result has 61.1 percent of original size [2021-02-21 20:45:56,599 WARN L147 QuantifierPusher]: treesize reduction 56, result has 61.1 percent of original size 88 [2021-02-21 20:45:56,601 WARN L141 QuantifierPusher]: treesize reduction 31, result has 73.9 percent of original size [2021-02-21 20:45:56,603 WARN L147 QuantifierPusher]: treesize reduction 31, result has 73.9 percent of original size 88 [2021-02-21 20:45:56,605 WARN L141 QuantifierPusher]: treesize reduction 30, result has 74.6 percent of original size [2021-02-21 20:45:56,607 WARN L147 QuantifierPusher]: treesize reduction 30, result has 74.6 percent of original size 88 [2021-02-21 20:45:56,609 WARN L141 QuantifierPusher]: treesize reduction 56, result has 61.1 percent of original size [2021-02-21 20:45:56,611 WARN L147 QuantifierPusher]: treesize reduction 56, result has 61.1 percent of original size 88 [2021-02-21 20:45:56,613 WARN L141 QuantifierPusher]: treesize reduction 30, result has 74.6 percent of original size [2021-02-21 20:45:56,615 WARN L147 QuantifierPusher]: treesize reduction 30, result has 74.6 percent of original size 88 [2021-02-21 20:45:56,616 WARN L141 QuantifierPusher]: treesize reduction 136, result has 0.7 percent of original size [2021-02-21 20:45:56,617 WARN L147 QuantifierPusher]: treesize reduction 136, result has 0.7 percent of original size 1 [2021-02-21 20:45:56,618 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:45:56,618 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:45:56,619 WARN L141 QuantifierPusher]: treesize reduction 33, result has 2.9 percent of original size [2021-02-21 20:45:56,619 WARN L147 QuantifierPusher]: treesize reduction 33, result has 2.9 percent of original size 1 [2021-02-21 20:45:56,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143505642] [2021-02-21 20:45:56,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:45:56,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-21 20:45:56,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873355442] [2021-02-21 20:45:56,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-21 20:45:56,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:45:56,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-21 20:45:56,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=346, Unknown=0, NotChecked=0, Total=552 [2021-02-21 20:45:56,622 INFO L87 Difference]: Start difference. First operand 1562 states and 2011 transitions. Second operand 17 states. [2021-02-21 20:45:57,367 WARN L202 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-02-21 20:45:57,499 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-02-21 20:45:57,654 WARN L202 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-02-21 20:45:57,876 WARN L202 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-02-21 20:46:03,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:46:03,302 INFO L93 Difference]: Finished difference Result 5248 states and 7111 transitions. [2021-02-21 20:46:03,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-21 20:46:03,302 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 150 [2021-02-21 20:46:03,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:46:03,334 INFO L225 Difference]: With dead ends: 5248 [2021-02-21 20:46:03,334 INFO L226 Difference]: Without dead ends: 3718 [2021-02-21 20:46:03,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=510, Invalid=1050, Unknown=0, NotChecked=0, Total=1560 [2021-02-21 20:46:03,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3718 states. [2021-02-21 20:46:04,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3718 to 3015. [2021-02-21 20:46:04,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3015 states. [2021-02-21 20:46:04,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 3764 transitions. [2021-02-21 20:46:04,341 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 3764 transitions. Word has length 150 [2021-02-21 20:46:04,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:46:04,341 INFO L480 AbstractCegarLoop]: Abstraction has 3015 states and 3764 transitions. [2021-02-21 20:46:04,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-21 20:46:04,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 3764 transitions. [2021-02-21 20:46:04,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-02-21 20:46:04,354 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:46:04,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:46:04,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:46:04,355 INFO L428 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:46:04,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:46:04,355 INFO L82 PathProgramCache]: Analyzing trace with hash -453555167, now seen corresponding path program 1 times [2021-02-21 20:46:04,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:46:04,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768116825] [2021-02-21 20:46:04,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:46:04,385 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 10