/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:21:48,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:21:48,973 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:21:49,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:21:49,047 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:21:49,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:21:49,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:21:49,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:21:49,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:21:49,057 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:21:49,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:21:49,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:21:49,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:21:49,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:21:49,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:21:49,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:21:49,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:21:49,084 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:21:49,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:21:49,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:21:49,086 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:21:49,098 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:21:49,098 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:21:49,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:21:49,100 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:21:49,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:21:49,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:21:49,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:21:49,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:21:49,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:21:49,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:21:49,101 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:21:49,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:21:49,102 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:21:49,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:21:49,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:21:49,102 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:21:49,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:21:49,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:21:49,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:21:49,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:21:49,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:21:49,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:21:49,104 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:21:49,104 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:21:49,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:21:49,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:21:49,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:21:49,470 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:21:49,476 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:21:49,477 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2021-02-22 02:21:49,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/284ce336a/84b48ea390764d5a947665fd4c3df6fd/FLAG243415ef8 [2021-02-22 02:21:50,141 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:21:50,142 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2021-02-22 02:21:50,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/284ce336a/84b48ea390764d5a947665fd4c3df6fd/FLAG243415ef8 [2021-02-22 02:21:50,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/284ce336a/84b48ea390764d5a947665fd4c3df6fd [2021-02-22 02:21:50,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:21:50,564 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:21:50,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:21:50,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:21:50,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:21:50,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:21:50" (1/1) ... [2021-02-22 02:21:50,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22807d73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:50, skipping insertion in model container [2021-02-22 02:21:50,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:21:50" (1/1) ... [2021-02-22 02:21:50,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:21:50,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:21:50,796 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1126,1139] [2021-02-22 02:21:50,807 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1880,1893] [2021-02-22 02:21:50,812 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[2415,2428] [2021-02-22 02:21:50,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:21:50,824 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:21:50,854 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1126,1139] [2021-02-22 02:21:50,862 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1880,1893] [2021-02-22 02:21:50,867 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[2415,2428] [2021-02-22 02:21:50,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:21:50,906 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:21:50,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:50 WrapperNode [2021-02-22 02:21:50,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:21:50,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:21:50,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:21:50,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:21:50,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:50" (1/1) ... [2021-02-22 02:21:50,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:50" (1/1) ... [2021-02-22 02:21:50,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:50" (1/1) ... [2021-02-22 02:21:50,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:50" (1/1) ... [2021-02-22 02:21:50,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:50" (1/1) ... [2021-02-22 02:21:50,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:50" (1/1) ... [2021-02-22 02:21:50,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:50" (1/1) ... [2021-02-22 02:21:50,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:21:50,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:21:50,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:21:50,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:21:50,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:50" (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 [2021-02-22 02:21:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:21:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:21:51,077 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:21:51,078 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:21:51,078 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:21:51,079 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:21:51,079 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:21:51,079 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:21:51,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:21:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:21:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:21:51,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-22 02:21:51,081 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:21:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:21:51,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:21:51,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:21:51,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:21:51,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:21:51,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:21:51,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:21:51,543 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 02:21:51,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:21:51 BoogieIcfgContainer [2021-02-22 02:21:51,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:21:51,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:21:51,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:21:51,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:21:51,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:21:50" (1/3) ... [2021-02-22 02:21:51,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f50425e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:21:51, skipping insertion in model container [2021-02-22 02:21:51,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:21:50" (2/3) ... [2021-02-22 02:21:51,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f50425e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:21:51, skipping insertion in model container [2021-02-22 02:21:51,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:21:51" (3/3) ... [2021-02-22 02:21:51,556 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+nlh-reducer.c [2021-02-22 02:21:51,563 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:21:51,568 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-02-22 02:21:51,589 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-02-22 02:21:51,613 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:21:51,613 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:21:51,613 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:21:51,613 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:21:51,614 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:21:51,614 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:21:51,614 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:21:51,614 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:21:51,634 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2021-02-22 02:21:51,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-22 02:21:51,645 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:51,646 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] [2021-02-22 02:21:51,646 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:51,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:51,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1631991453, now seen corresponding path program 1 times [2021-02-22 02:21:51,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:51,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546570701] [2021-02-22 02:21:51,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:51,797 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:52,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:52,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:52,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:52,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:21:52,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:52,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:52,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:52,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:52,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:52,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:52,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546570701] [2021-02-22 02:21:52,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:52,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:21:52,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570558585] [2021-02-22 02:21:52,206 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:21:52,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:52,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:21:52,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:21:52,230 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 4 states. [2021-02-22 02:21:52,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:52,675 INFO L93 Difference]: Finished difference Result 215 states and 241 transitions. [2021-02-22 02:21:52,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 02:21:52,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2021-02-22 02:21:52,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:52,689 INFO L225 Difference]: With dead ends: 215 [2021-02-22 02:21:52,689 INFO L226 Difference]: Without dead ends: 115 [2021-02-22 02:21:52,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:21:52,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-02-22 02:21:52,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 81. [2021-02-22 02:21:52,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2021-02-22 02:21:52,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 86 transitions. [2021-02-22 02:21:52,748 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 86 transitions. Word has length 35 [2021-02-22 02:21:52,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:52,749 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 86 transitions. [2021-02-22 02:21:52,749 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:21:52,750 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 86 transitions. [2021-02-22 02:21:52,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-22 02:21:52,751 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:52,752 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] [2021-02-22 02:21:52,752 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:21:52,752 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:52,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:52,753 INFO L82 PathProgramCache]: Analyzing trace with hash 510759303, now seen corresponding path program 1 times [2021-02-22 02:21:52,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:52,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369615275] [2021-02-22 02:21:52,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:52,757 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:52,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:52,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:52,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:52,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:52,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:52,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:52,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:52,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:52,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:52,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:52,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:52,893 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:52,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:52,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:52,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369615275] [2021-02-22 02:21:52,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:52,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 02:21:52,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642903426] [2021-02-22 02:21:52,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 02:21:52,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:52,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 02:21:52,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:21:52,914 INFO L87 Difference]: Start difference. First operand 81 states and 86 transitions. Second operand 6 states. [2021-02-22 02:21:53,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:53,222 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2021-02-22 02:21:53,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-22 02:21:53,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2021-02-22 02:21:53,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:53,228 INFO L225 Difference]: With dead ends: 132 [2021-02-22 02:21:53,229 INFO L226 Difference]: Without dead ends: 130 [2021-02-22 02:21:53,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-02-22 02:21:53,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-02-22 02:21:53,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 86. [2021-02-22 02:21:53,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2021-02-22 02:21:53,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2021-02-22 02:21:53,272 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 36 [2021-02-22 02:21:53,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:53,273 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2021-02-22 02:21:53,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 02:21:53,273 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2021-02-22 02:21:53,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-22 02:21:53,276 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:53,276 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] [2021-02-22 02:21:53,277 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:21:53,277 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:53,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:53,278 INFO L82 PathProgramCache]: Analyzing trace with hash 2004335176, now seen corresponding path program 1 times [2021-02-22 02:21:53,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:53,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558832530] [2021-02-22 02:21:53,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:53,286 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:53,367 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:53,368 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:53,371 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:53,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:21:53,377 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:53,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:53,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:53,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:53,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:53,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558832530] [2021-02-22 02:21:53,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:53,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:21:53,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525791781] [2021-02-22 02:21:53,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:21:53,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:53,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:21:53,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:21:53,437 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 4 states. [2021-02-22 02:21:53,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:53,621 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2021-02-22 02:21:53,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 02:21:53,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2021-02-22 02:21:53,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:53,623 INFO L225 Difference]: With dead ends: 162 [2021-02-22 02:21:53,623 INFO L226 Difference]: Without dead ends: 111 [2021-02-22 02:21:53,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:21:53,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-02-22 02:21:53,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 78. [2021-02-22 02:21:53,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-22 02:21:53,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-02-22 02:21:53,635 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 36 [2021-02-22 02:21:53,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:53,635 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-02-22 02:21:53,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:21:53,635 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-02-22 02:21:53,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-22 02:21:53,637 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:53,637 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] [2021-02-22 02:21:53,637 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:21:53,637 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:53,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:53,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1679437122, now seen corresponding path program 1 times [2021-02-22 02:21:53,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:53,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106927349] [2021-02-22 02:21:53,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:53,641 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:53,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:53,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:53,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:53,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:53,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:53,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:53,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:53,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:53,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:53,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:53,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106927349] [2021-02-22 02:21:53,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:53,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 02:21:53,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201479112] [2021-02-22 02:21:53,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 02:21:53,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:53,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 02:21:53,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:21:53,738 INFO L87 Difference]: Start difference. First operand 78 states and 82 transitions. Second operand 4 states. [2021-02-22 02:21:53,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:53,855 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2021-02-22 02:21:53,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 02:21:53,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2021-02-22 02:21:53,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:53,857 INFO L225 Difference]: With dead ends: 106 [2021-02-22 02:21:53,857 INFO L226 Difference]: Without dead ends: 89 [2021-02-22 02:21:53,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 02:21:53,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-02-22 02:21:53,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2021-02-22 02:21:53,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-22 02:21:53,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2021-02-22 02:21:53,867 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 38 [2021-02-22 02:21:53,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:53,868 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2021-02-22 02:21:53,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 02:21:53,868 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2021-02-22 02:21:53,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-22 02:21:53,870 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:53,870 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] [2021-02-22 02:21:53,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 02:21:53,870 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:53,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:53,871 INFO L82 PathProgramCache]: Analyzing trace with hash 2146049076, now seen corresponding path program 1 times [2021-02-22 02:21:53,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:53,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001977905] [2021-02-22 02:21:53,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:53,874 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:53,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:53,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:53,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:53,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:21:53,965 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:53,966 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-22 02:21:53,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:53,975 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-22 02:21:53,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:53,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:21:54,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:21:54,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:54,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:54,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:54,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:54,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:54,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001977905] [2021-02-22 02:21:54,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:54,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 02:21:54,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63374257] [2021-02-22 02:21:54,051 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 02:21:54,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:54,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 02:21:54,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:21:54,052 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 6 states. [2021-02-22 02:21:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:54,277 INFO L93 Difference]: Finished difference Result 186 states and 194 transitions. [2021-02-22 02:21:54,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-22 02:21:54,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2021-02-22 02:21:54,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:54,280 INFO L225 Difference]: With dead ends: 186 [2021-02-22 02:21:54,280 INFO L226 Difference]: Without dead ends: 144 [2021-02-22 02:21:54,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-02-22 02:21:54,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-02-22 02:21:54,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 92. [2021-02-22 02:21:54,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-02-22 02:21:54,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2021-02-22 02:21:54,292 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 57 [2021-02-22 02:21:54,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:54,292 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2021-02-22 02:21:54,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 02:21:54,292 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2021-02-22 02:21:54,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-22 02:21:54,294 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:54,294 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] [2021-02-22 02:21:54,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-22 02:21:54,294 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:54,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:54,295 INFO L82 PathProgramCache]: Analyzing trace with hash 2038639544, now seen corresponding path program 1 times [2021-02-22 02:21:54,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:54,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887675315] [2021-02-22 02:21:54,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:54,297 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:54,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,342 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:54,343 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:54,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:54,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:21:54,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,357 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:54,358 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:21:54,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:21:54,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:21:54,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,396 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:54,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:54,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:54,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:54,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887675315] [2021-02-22 02:21:54,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:54,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-22 02:21:54,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973092359] [2021-02-22 02:21:54,446 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-22 02:21:54,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:54,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-22 02:21:54,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-22 02:21:54,447 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand 9 states. [2021-02-22 02:21:54,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:54,742 INFO L93 Difference]: Finished difference Result 162 states and 170 transitions. [2021-02-22 02:21:54,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-22 02:21:54,743 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2021-02-22 02:21:54,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:54,744 INFO L225 Difference]: With dead ends: 162 [2021-02-22 02:21:54,744 INFO L226 Difference]: Without dead ends: 160 [2021-02-22 02:21:54,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-02-22 02:21:54,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-02-22 02:21:54,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 97. [2021-02-22 02:21:54,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-02-22 02:21:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 101 transitions. [2021-02-22 02:21:54,760 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 101 transitions. Word has length 58 [2021-02-22 02:21:54,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:54,760 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 101 transitions. [2021-02-22 02:21:54,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-22 02:21:54,760 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 101 transitions. [2021-02-22 02:21:54,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-02-22 02:21:54,762 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:54,762 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] [2021-02-22 02:21:54,762 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 02:21:54,762 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:54,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:54,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1267812039, now seen corresponding path program 1 times [2021-02-22 02:21:54,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:54,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78859919] [2021-02-22 02:21:54,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:54,765 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:54,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:54,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:21:54,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,833 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-22 02:21:54,846 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,847 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:21:54,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-22 02:21:54,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-22 02:21:54,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:54,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:54,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:54,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:54,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78859919] [2021-02-22 02:21:54,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:54,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 02:21:54,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438419670] [2021-02-22 02:21:54,925 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 02:21:54,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:54,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 02:21:54,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:21:54,926 INFO L87 Difference]: Start difference. First operand 97 states and 101 transitions. Second operand 6 states. [2021-02-22 02:21:55,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:55,191 INFO L93 Difference]: Finished difference Result 174 states and 181 transitions. [2021-02-22 02:21:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-22 02:21:55,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2021-02-22 02:21:55,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:55,192 INFO L225 Difference]: With dead ends: 174 [2021-02-22 02:21:55,193 INFO L226 Difference]: Without dead ends: 127 [2021-02-22 02:21:55,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-02-22 02:21:55,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-02-22 02:21:55,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 97. [2021-02-22 02:21:55,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2021-02-22 02:21:55,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 100 transitions. [2021-02-22 02:21:55,213 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 100 transitions. Word has length 58 [2021-02-22 02:21:55,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:55,213 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 100 transitions. [2021-02-22 02:21:55,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 02:21:55,213 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 100 transitions. [2021-02-22 02:21:55,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-22 02:21:55,215 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:55,215 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] [2021-02-22 02:21:55,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-22 02:21:55,215 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:55,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:55,216 INFO L82 PathProgramCache]: Analyzing trace with hash -742105895, now seen corresponding path program 1 times [2021-02-22 02:21:55,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:55,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235944867] [2021-02-22 02:21:55,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:21:55,218 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:21:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:55,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:55,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:55,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:55,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-22 02:21:55,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:55,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-22 02:21:55,503 WARN L141 QuantifierPusher]: treesize reduction 9, result has 85.0 percent of original size [2021-02-22 02:21:55,504 WARN L147 QuantifierPusher]: treesize reduction 9, result has 85.0 percent of original size 51 [2021-02-22 02:21:55,530 WARN L141 QuantifierPusher]: treesize reduction 102, result has 39.6 percent of original size [2021-02-22 02:21:55,531 WARN L147 QuantifierPusher]: treesize reduction 102, result has 39.6 percent of original size 67 [2021-02-22 02:21:55,567 WARN L141 QuantifierPusher]: treesize reduction 179, result has 31.7 percent of original size [2021-02-22 02:21:55,568 WARN L147 QuantifierPusher]: treesize reduction 179, result has 31.7 percent of original size 83 [2021-02-22 02:21:55,614 WARN L141 QuantifierPusher]: treesize reduction 370, result has 23.9 percent of original size [2021-02-22 02:21:55,615 WARN L147 QuantifierPusher]: treesize reduction 370, result has 23.9 percent of original size 116 [2021-02-22 02:21:55,682 WARN L141 QuantifierPusher]: treesize reduction 656, result has 49.8 percent of original size [2021-02-22 02:21:55,692 WARN L147 QuantifierPusher]: treesize reduction 656, result has 49.8 percent of original size 651 [2021-02-22 02:21:55,860 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 44 [2021-02-22 02:21:55,873 WARN L141 QuantifierPusher]: treesize reduction 63, result has 87.3 percent of original size [2021-02-22 02:21:55,879 WARN L147 QuantifierPusher]: treesize reduction 63, result has 87.3 percent of original size 434 [2021-02-22 02:21:56,144 WARN L202 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-02-22 02:21:56,153 WARN L141 QuantifierPusher]: treesize reduction 53, result has 89.1 percent of original size [2021-02-22 02:21:56,157 WARN L147 QuantifierPusher]: treesize reduction 53, result has 89.1 percent of original size 433 [2021-02-22 02:21:56,287 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2021-02-22 02:21:56,294 WARN L141 QuantifierPusher]: treesize reduction 43, result has 88.5 percent of original size [2021-02-22 02:21:56,297 WARN L147 QuantifierPusher]: treesize reduction 43, result has 88.5 percent of original size 331 [2021-02-22 02:21:56,390 WARN L141 QuantifierPusher]: treesize reduction 21, result has 82.8 percent of original size [2021-02-22 02:21:56,396 WARN L147 QuantifierPusher]: treesize reduction 21, result has 82.8 percent of original size 101 [2021-02-22 02:21:56,435 WARN L141 QuantifierPusher]: treesize reduction 32, result has 67.3 percent of original size [2021-02-22 02:21:56,437 WARN L147 QuantifierPusher]: treesize reduction 32, result has 67.3 percent of original size 66 [2021-02-22 02:21:56,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:56,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:21:56,500 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:56,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-22 02:21:56,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:56,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:56,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:21:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:21:56,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:21:56,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:21:56,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:21:56,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235944867] [2021-02-22 02:21:56,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:21:56,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-02-22 02:21:56,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974701064] [2021-02-22 02:21:56,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-22 02:21:56,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:21:56,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-22 02:21:56,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-02-22 02:21:56,611 INFO L87 Difference]: Start difference. First operand 97 states and 100 transitions. Second operand 17 states. [2021-02-22 02:21:57,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:21:57,773 INFO L93 Difference]: Finished difference Result 152 states and 158 transitions. [2021-02-22 02:21:57,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-22 02:21:57,774 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 60 [2021-02-22 02:21:57,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:21:57,775 INFO L225 Difference]: With dead ends: 152 [2021-02-22 02:21:57,775 INFO L226 Difference]: Without dead ends: 105 [2021-02-22 02:21:57,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2021-02-22 02:21:57,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-02-22 02:21:57,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 85. [2021-02-22 02:21:57,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2021-02-22 02:21:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2021-02-22 02:21:57,795 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 60 [2021-02-22 02:21:57,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:21:57,795 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2021-02-22 02:21:57,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2021-02-22 02:21:57,796 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2021-02-22 02:21:57,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-02-22 02:21:57,797 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:21:57,797 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-22 02:21:57,798 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-22 02:21:57,798 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:21:57,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:21:57,798 INFO L82 PathProgramCache]: Analyzing trace with hash -582759126, now seen corresponding path program 1 times [2021-02-22 02:21:57,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:21:57,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81836356] [2021-02-22 02:21:57,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY