/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/ldv-regression/stateful_check.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:38:22,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:38:22,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:38:22,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:38:22,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:38:22,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:38:22,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:38:22,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:38:22,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:38:22,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:38:22,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:38:22,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:38:22,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:38:22,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:38:22,773 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:38:22,775 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:38:22,779 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:38:22,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:38:22,788 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:38:22,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:38:22,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:38:22,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:38:22,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:38:22,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:38:22,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:38:22,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:38:22,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:38:22,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:38:22,826 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 20:38:22,867 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:38:22,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:38:22,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:38:22,871 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:38:22,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:38:22,872 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:38:22,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:38:22,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:38:22,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:38:22,873 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:38:22,874 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:38:22,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:38:22,874 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:38:22,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:38:22,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:38:22,875 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:38:22,876 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:38:22,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:38:22,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:38:22,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:38:22,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:38:22,877 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:38:22,877 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:38:23,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:38:23,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:38:23,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:38:23,292 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:38:23,293 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:38:23,294 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c [2021-02-21 20:38:23,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db9ee7885/cb62f9bd37da44ada54a64a1295c05d4/FLAGacc8ee1f4 [2021-02-21 20:38:23,988 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:38:23,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c [2021-02-21 20:38:23,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db9ee7885/cb62f9bd37da44ada54a64a1295c05d4/FLAGacc8ee1f4 [2021-02-21 20:38:24,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db9ee7885/cb62f9bd37da44ada54a64a1295c05d4 [2021-02-21 20:38:24,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:38:24,384 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:38:24,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:38:24,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:38:24,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:38:24,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:38:24" (1/1) ... [2021-02-21 20:38:24,399 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 21.02 08:38:24, skipping insertion in model container [2021-02-21 20:38:24,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:38:24" (1/1) ... [2021-02-21 20:38:24,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:38:24,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:38:24,606 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c[298,311] [2021-02-21 20:38:24,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:38:24,650 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:38:24,666 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/stateful_check.c[298,311] [2021-02-21 20:38:24,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:38:24,698 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:38:24,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:24 WrapperNode [2021-02-21 20:38:24,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:38:24,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:38:24,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:38:24,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:38:24,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:24" (1/1) ... [2021-02-21 20:38:24,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:24" (1/1) ... [2021-02-21 20:38:24,726 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:24" (1/1) ... [2021-02-21 20:38:24,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:24" (1/1) ... [2021-02-21 20:38:24,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:24" (1/1) ... [2021-02-21 20:38:24,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:24" (1/1) ... [2021-02-21 20:38:24,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:24" (1/1) ... [2021-02-21 20:38:24,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:38:24,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:38:24,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:38:24,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:38:24,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:24" (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 20:38:24,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:38:24,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:38:24,883 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:38:24,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-02-21 20:38:24,884 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-02-21 20:38:24,884 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-02-21 20:38:24,884 INFO L138 BoogieDeclarations]: Found implementation of procedure check_final_state [2021-02-21 20:38:24,884 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_release [2021-02-21 20:38:24,885 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_llseek [2021-02-21 20:38:24,886 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_read [2021-02-21 20:38:24,886 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_open [2021-02-21 20:38:24,887 INFO L138 BoogieDeclarations]: Found implementation of procedure my_init [2021-02-21 20:38:24,887 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:38:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:38:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:38:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:38:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:38:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-02-21 20:38:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:38:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-02-21 20:38:24,894 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-02-21 20:38:24,895 INFO L130 BoogieDeclarations]: Found specification of procedure check_final_state [2021-02-21 20:38:24,896 INFO L130 BoogieDeclarations]: Found specification of procedure misc_release [2021-02-21 20:38:24,896 INFO L130 BoogieDeclarations]: Found specification of procedure misc_llseek [2021-02-21 20:38:24,897 INFO L130 BoogieDeclarations]: Found specification of procedure misc_read [2021-02-21 20:38:24,897 INFO L130 BoogieDeclarations]: Found specification of procedure misc_open [2021-02-21 20:38:24,897 INFO L130 BoogieDeclarations]: Found specification of procedure my_init [2021-02-21 20:38:24,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:38:24,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:38:24,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:38:24,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:38:24,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:38:24,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:38:24,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:38:25,631 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:38:25,631 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 20:38:25,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:38:25 BoogieIcfgContainer [2021-02-21 20:38:25,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:38:25,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:38:25,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:38:25,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:38:25,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:38:24" (1/3) ... [2021-02-21 20:38:25,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537d0382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:38:25, skipping insertion in model container [2021-02-21 20:38:25,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:38:24" (2/3) ... [2021-02-21 20:38:25,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537d0382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:38:25, skipping insertion in model container [2021-02-21 20:38:25,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:38:25" (3/3) ... [2021-02-21 20:38:25,651 INFO L111 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2021-02-21 20:38:25,661 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:38:25,667 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:38:25,691 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:38:25,737 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:38:25,738 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:38:25,738 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:38:25,738 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:38:25,738 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:38:25,738 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:38:25,738 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:38:25,739 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:38:25,762 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2021-02-21 20:38:25,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-21 20:38:25,786 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:38:25,787 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] [2021-02-21 20:38:25,788 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:38:25,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:38:25,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1510621862, now seen corresponding path program 1 times [2021-02-21 20:38:25,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:38:25,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705185393] [2021-02-21 20:38:25,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:38:25,907 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:38:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:26,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:26,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:26,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:38:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:26,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:26,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 20:38:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:26,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:26,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:26,324 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 20:38:26,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705185393] [2021-02-21 20:38:26,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:38:26,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:38:26,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688616588] [2021-02-21 20:38:26,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:38:26,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:38:26,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:38:26,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:38:26,359 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 4 states. [2021-02-21 20:38:26,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:38:26,989 INFO L93 Difference]: Finished difference Result 208 states and 253 transitions. [2021-02-21 20:38:26,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:38:26,992 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2021-02-21 20:38:26,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:38:27,010 INFO L225 Difference]: With dead ends: 208 [2021-02-21 20:38:27,011 INFO L226 Difference]: Without dead ends: 109 [2021-02-21 20:38:27,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:38:27,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-02-21 20:38:27,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2021-02-21 20:38:27,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2021-02-21 20:38:27,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 119 transitions. [2021-02-21 20:38:27,114 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 119 transitions. Word has length 27 [2021-02-21 20:38:27,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:38:27,115 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 119 transitions. [2021-02-21 20:38:27,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:38:27,115 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 119 transitions. [2021-02-21 20:38:27,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-21 20:38:27,117 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:38:27,117 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] [2021-02-21 20:38:27,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:38:27,118 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:38:27,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:38:27,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1907990770, now seen corresponding path program 1 times [2021-02-21 20:38:27,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:38:27,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145746637] [2021-02-21 20:38:27,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:38:27,123 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:38:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:27,201 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:27,203 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:27,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:27,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:27,212 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:27,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:27,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:38:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:27,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:27,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:27,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:27,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:27,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 20:38:27,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:27,298 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:27,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:27,302 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 20:38:27,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145746637] [2021-02-21 20:38:27,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:38:27,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 20:38:27,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866384268] [2021-02-21 20:38:27,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 20:38:27,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:38:27,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 20:38:27,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 20:38:27,307 INFO L87 Difference]: Start difference. First operand 104 states and 119 transitions. Second operand 5 states. [2021-02-21 20:38:27,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:38:27,720 INFO L93 Difference]: Finished difference Result 179 states and 210 transitions. [2021-02-21 20:38:27,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 20:38:27,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2021-02-21 20:38:27,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:38:27,725 INFO L225 Difference]: With dead ends: 179 [2021-02-21 20:38:27,725 INFO L226 Difference]: Without dead ends: 172 [2021-02-21 20:38:27,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-21 20:38:27,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-02-21 20:38:27,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2021-02-21 20:38:27,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2021-02-21 20:38:27,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 198 transitions. [2021-02-21 20:38:27,763 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 198 transitions. Word has length 29 [2021-02-21 20:38:27,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:38:27,764 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 198 transitions. [2021-02-21 20:38:27,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 20:38:27,764 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 198 transitions. [2021-02-21 20:38:27,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-21 20:38:27,766 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:38:27,767 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] [2021-02-21 20:38:27,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:38:27,767 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:38:27,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:38:27,768 INFO L82 PathProgramCache]: Analyzing trace with hash 843041052, now seen corresponding path program 1 times [2021-02-21 20:38:27,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:38:27,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [901839851] [2021-02-21 20:38:27,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:38:27,771 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:38:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:27,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:27,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:27,826 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:27,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:27,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:27,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:27,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:38:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:27,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:27,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:27,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 20:38:27,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:27,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:27,880 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:27,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-02-21 20:38:27,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:27,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:27,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:27,896 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 20:38:27,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [901839851] [2021-02-21 20:38:27,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:38:27,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:38:27,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599712857] [2021-02-21 20:38:27,898 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:38:27,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:38:27,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:38:27,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:38:27,899 INFO L87 Difference]: Start difference. First operand 168 states and 198 transitions. Second operand 6 states. [2021-02-21 20:38:28,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:38:28,253 INFO L93 Difference]: Finished difference Result 419 states and 522 transitions. [2021-02-21 20:38:28,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 20:38:28,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 46 [2021-02-21 20:38:28,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:38:28,258 INFO L225 Difference]: With dead ends: 419 [2021-02-21 20:38:28,258 INFO L226 Difference]: Without dead ends: 273 [2021-02-21 20:38:28,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-02-21 20:38:28,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-02-21 20:38:28,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 208. [2021-02-21 20:38:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2021-02-21 20:38:28,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 249 transitions. [2021-02-21 20:38:28,298 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 249 transitions. Word has length 46 [2021-02-21 20:38:28,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:38:28,299 INFO L480 AbstractCegarLoop]: Abstraction has 208 states and 249 transitions. [2021-02-21 20:38:28,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:38:28,299 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 249 transitions. [2021-02-21 20:38:28,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-02-21 20:38:28,303 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:38:28,304 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-21 20:38:28,304 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:38:28,307 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:38:28,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:38:28,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1649941128, now seen corresponding path program 1 times [2021-02-21 20:38:28,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:38:28,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998791569] [2021-02-21 20:38:28,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:38:28,358 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:38:28,363 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:38:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:28,503 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:28,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:28,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:28,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:28,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,542 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:28,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:38:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:28,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:28,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 20:38:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:28,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:28,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 20:38:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:28,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:28,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-02-21 20:38:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:28,636 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:28,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:28,644 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 20:38:28,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998791569] [2021-02-21 20:38:28,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:38:28,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:38:28,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616572263] [2021-02-21 20:38:28,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:38:28,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:38:28,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:38:28,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:38:28,655 INFO L87 Difference]: Start difference. First operand 208 states and 249 transitions. Second operand 8 states. [2021-02-21 20:38:29,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:38:29,232 INFO L93 Difference]: Finished difference Result 521 states and 651 transitions. [2021-02-21 20:38:29,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 20:38:29,233 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 67 [2021-02-21 20:38:29,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:38:29,236 INFO L225 Difference]: With dead ends: 521 [2021-02-21 20:38:29,237 INFO L226 Difference]: Without dead ends: 335 [2021-02-21 20:38:29,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:38:29,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-02-21 20:38:29,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 248. [2021-02-21 20:38:29,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2021-02-21 20:38:29,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 304 transitions. [2021-02-21 20:38:29,279 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 304 transitions. Word has length 67 [2021-02-21 20:38:29,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:38:29,280 INFO L480 AbstractCegarLoop]: Abstraction has 248 states and 304 transitions. [2021-02-21 20:38:29,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:38:29,280 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 304 transitions. [2021-02-21 20:38:29,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-02-21 20:38:29,282 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:38:29,282 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-02-21 20:38:29,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:38:29,283 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:38:29,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:38:29,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1080587144, now seen corresponding path program 1 times [2021-02-21 20:38:29,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:38:29,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468245194] [2021-02-21 20:38:29,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:38:29,323 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:38:29,325 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:38:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:29,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:29,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:29,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:29,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:29,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:29,391 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:29,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:29,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:29,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:29,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:29,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:38:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:29,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:29,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:29,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 20:38:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:29,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:29,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:29,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 20:38:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:29,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:29,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:29,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-21 20:38:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:29,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:29,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:29,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-02-21 20:38:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:29,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:29,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:29,487 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 20:38:29,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468245194] [2021-02-21 20:38:29,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:38:29,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:38:29,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273259922] [2021-02-21 20:38:29,490 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:38:29,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:38:29,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:38:29,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:38:29,492 INFO L87 Difference]: Start difference. First operand 248 states and 304 transitions. Second operand 6 states. [2021-02-21 20:38:30,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:38:30,195 INFO L93 Difference]: Finished difference Result 860 states and 1094 transitions. [2021-02-21 20:38:30,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-21 20:38:30,195 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 87 [2021-02-21 20:38:30,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:38:30,205 INFO L225 Difference]: With dead ends: 860 [2021-02-21 20:38:30,205 INFO L226 Difference]: Without dead ends: 634 [2021-02-21 20:38:30,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-02-21 20:38:30,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-02-21 20:38:30,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 401. [2021-02-21 20:38:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2021-02-21 20:38:30,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 497 transitions. [2021-02-21 20:38:30,297 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 497 transitions. Word has length 87 [2021-02-21 20:38:30,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:38:30,302 INFO L480 AbstractCegarLoop]: Abstraction has 401 states and 497 transitions. [2021-02-21 20:38:30,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:38:30,302 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 497 transitions. [2021-02-21 20:38:30,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-02-21 20:38:30,310 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:38:30,311 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-02-21 20:38:30,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 20:38:30,311 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:38:30,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:38:30,312 INFO L82 PathProgramCache]: Analyzing trace with hash 419074158, now seen corresponding path program 1 times [2021-02-21 20:38:30,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:38:30,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581442121] [2021-02-21 20:38:30,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:38:30,346 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:38:30,349 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:38:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:30,456 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:30,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:30,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:30,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:30,463 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:30,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:30,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:30,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:30,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:38:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:30,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:30,501 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:30,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 20:38:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:30,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:30,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:30,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 20:38:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:30,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:30,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:30,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:30,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:38:30,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-21 20:38:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:30,525 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:30,525 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:30,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-02-21 20:38:30,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:30,536 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:30,537 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:30,550 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 20:38:30,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581442121] [2021-02-21 20:38:30,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:38:30,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 20:38:30,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359795139] [2021-02-21 20:38:30,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 20:38:30,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:38:30,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 20:38:30,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:38:30,554 INFO L87 Difference]: Start difference. First operand 401 states and 497 transitions. Second operand 6 states. [2021-02-21 20:38:31,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:38:31,137 INFO L93 Difference]: Finished difference Result 935 states and 1172 transitions. [2021-02-21 20:38:31,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 20:38:31,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2021-02-21 20:38:31,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:38:31,145 INFO L225 Difference]: With dead ends: 935 [2021-02-21 20:38:31,145 INFO L226 Difference]: Without dead ends: 556 [2021-02-21 20:38:31,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-02-21 20:38:31,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-02-21 20:38:31,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 407. [2021-02-21 20:38:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2021-02-21 20:38:31,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 497 transitions. [2021-02-21 20:38:31,239 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 497 transitions. Word has length 88 [2021-02-21 20:38:31,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:38:31,240 INFO L480 AbstractCegarLoop]: Abstraction has 407 states and 497 transitions. [2021-02-21 20:38:31,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 20:38:31,240 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 497 transitions. [2021-02-21 20:38:31,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-02-21 20:38:31,242 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:38:31,243 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-02-21 20:38:31,243 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 20:38:31,244 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:38:31,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:38:31,244 INFO L82 PathProgramCache]: Analyzing trace with hash -699194828, now seen corresponding path program 1 times [2021-02-21 20:38:31,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:38:31,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1445388644] [2021-02-21 20:38:31,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:38:31,295 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:38:31,297 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:38:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:31,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,371 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:31,372 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:31,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:31,385 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,386 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:38:31,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,394 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:31,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:38:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:31,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:31,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 20:38:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:31,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:31,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-21 20:38:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:31,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:31,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-02-21 20:38:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:31,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:31,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-02-21 20:38:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:38:31,468 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:38:31,468 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:38:31,476 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 20:38:31,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1445388644] [2021-02-21 20:38:31,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:38:31,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-21 20:38:31,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131865800] [2021-02-21 20:38:31,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-21 20:38:31,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:38:31,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-21 20:38:31,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-21 20:38:31,480 INFO L87 Difference]: Start difference. First operand 407 states and 497 transitions. Second operand 8 states. [2021-02-21 20:38:32,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:38:32,064 INFO L93 Difference]: Finished difference Result 1178 states and 1517 transitions. [2021-02-21 20:38:32,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 20:38:32,065 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2021-02-21 20:38:32,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:38:32,071 INFO L225 Difference]: With dead ends: 1178 [2021-02-21 20:38:32,071 INFO L226 Difference]: Without dead ends: 793 [2021-02-21 20:38:32,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:38:32,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2021-02-21 20:38:32,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 487. [2021-02-21 20:38:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 487 states. [2021-02-21 20:38:32,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 611 transitions. [2021-02-21 20:38:32,137 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 611 transitions. Word has length 87 [2021-02-21 20:38:32,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:38:32,137 INFO L480 AbstractCegarLoop]: Abstraction has 487 states and 611 transitions. [2021-02-21 20:38:32,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-21 20:38:32,138 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 611 transitions. [2021-02-21 20:38:32,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-02-21 20:38:32,139 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:38:32,139 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2021-02-21 20:38:32,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 20:38:32,140 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:38:32,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:38:32,141 INFO L82 PathProgramCache]: Analyzing trace with hash 2120170501, now seen corresponding path program 1 times [2021-02-21 20:38:32,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:38:32,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291590572] [2021-02-21 20:38:32,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:38:32,207 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 20:38:32,209 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:38:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:38:32,227 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:38:32,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:38:32,245 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:38:32,291 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:38:32,292 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:38:32,293 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 20:38:32,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:38:32 BoogieIcfgContainer [2021-02-21 20:38:32,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:38:32,318 INFO L168 Benchmark]: Toolchain (without parser) took 7947.93 ms. Allocated memory was 157.3 MB in the beginning and 238.0 MB in the end (delta: 80.7 MB). Free memory was 133.4 MB in the beginning and 146.0 MB in the end (delta: -12.6 MB). Peak memory consumption was 69.6 MB. Max. memory is 8.0 GB. [2021-02-21 20:38:32,319 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 157.3 MB. Free memory is still 134.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:38:32,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.64 ms. Allocated memory is still 157.3 MB. Free memory was 132.6 MB in the beginning and 122.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:38:32,320 INFO L168 Benchmark]: Boogie Preprocessor took 47.30 ms. Allocated memory is still 157.3 MB. Free memory was 122.3 MB in the beginning and 120.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:38:32,321 INFO L168 Benchmark]: RCFGBuilder took 887.36 ms. Allocated memory is still 157.3 MB. Free memory was 120.7 MB in the beginning and 133.1 MB in the end (delta: -12.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-21 20:38:32,321 INFO L168 Benchmark]: TraceAbstraction took 6676.80 ms. Allocated memory was 157.3 MB in the beginning and 238.0 MB in the end (delta: 80.7 MB). Free memory was 132.6 MB in the beginning and 146.0 MB in the end (delta: -13.4 MB). Peak memory consumption was 68.9 MB. Max. memory is 8.0 GB. [2021-02-21 20:38:32,324 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 157.3 MB. Free memory is still 134.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 307.64 ms. Allocated memory is still 157.3 MB. Free memory was 132.6 MB in the beginning and 122.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.30 ms. Allocated memory is still 157.3 MB. Free memory was 122.3 MB in the beginning and 120.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 887.36 ms. Allocated memory is still 157.3 MB. Free memory was 120.7 MB in the beginning and 133.1 MB in the end (delta: -12.3 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6676.80 ms. Allocated memory was 157.3 MB in the beginning and 238.0 MB in the end (delta: 80.7 MB). Free memory was 132.6 MB in the beginning and 146.0 MB in the end (delta: -13.4 MB). Peak memory consumption was 68.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L11] int ldv_mutex = 1; [L13] int open_called = 0; [L76] int ldv_s_misc_fops_file_operations = 0; [L77] CALL my_init() [L71] open_called = 0 [L72] return 0; [L77] RET my_init() [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L83] COND TRUE ldv_s_misc_fops_file_operations==0 [L84] CALL misc_open() [L59] COND TRUE __VERIFIER_nondet_int() [L61] return 1; [L84] RET misc_open() [L85] ldv_s_misc_fops_file_operations++ [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: [L91] COND TRUE ldv_s_misc_fops_file_operations==1 [L92] CALL misc_read() [L54] return 0; [L92] RET misc_read() [L93] ldv_s_misc_fops_file_operations++ [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: [L98] case 2: [L99] COND TRUE ldv_s_misc_fops_file_operations==2 [L100] CALL misc_llseek() [L50] return 0; [L100] RET misc_llseek() [L101] ldv_s_misc_fops_file_operations++ [L78] COND TRUE __VERIFIER_nondet_int() [L82] case 0: [L90] case 1: [L98] case 2: [L106] case 3: [L107] COND TRUE ldv_s_misc_fops_file_operations==3 [L108] CALL misc_release() [L36] COND FALSE !(\read(open_called)) [L43] CALL mutex_lock() [L18] (ldv_mutex == 1) ? 0 : __blast_assert() [L19] ldv_mutex = 2 [L43] RET mutex_lock() [L44] CALL mutex_lock() [L18] (ldv_mutex == 1) ? 0 : __blast_assert() [L18] CALL __blast_assert() [L6] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 13 procedures, 117 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.5s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 839 SDtfs, 1255 SDslu, 1529 SDs, 0 SdLazy, 1503 SolverSat, 326 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=487occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 849 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...