/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/array-fpi/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:46:37,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:46:37,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:46:37,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:46:37,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:46:37,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:46:37,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:46:37,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:46:37,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:46:37,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:46:37,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:46:37,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:46:37,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:46:37,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:46:37,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:46:37,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:46:37,502 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:46:37,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:46:37,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:46:37,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:46:37,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:46:37,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:46:37,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:46:37,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:46:37,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:46:37,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:46:37,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:46:37,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:46:37,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:46:37,594 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:46:37,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:46:37,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:46:37,599 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:46:37,599 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:46:37,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:46:37,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:46:37,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:46:37,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:46:37,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:46:37,602 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:46:37,602 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:46:37,602 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:46:37,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:46:37,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:46:37,603 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:46:37,603 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:46:37,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:46:37,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:46:37,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:46:37,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:46:37,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:46:37,604 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:46:38,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:46:38,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:46:38,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:46:38,063 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:46:38,064 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:46:38,065 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2021-02-23 18:46:38,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96e3f0e2c/eb1e6cf56bb24b9d95bb9a7ddeee7014/FLAGd4642b1d9 [2021-02-23 18:46:38,834 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:46:38,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs2f.c [2021-02-23 18:46:38,842 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96e3f0e2c/eb1e6cf56bb24b9d95bb9a7ddeee7014/FLAGd4642b1d9 [2021-02-23 18:46:39,208 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96e3f0e2c/eb1e6cf56bb24b9d95bb9a7ddeee7014 [2021-02-23 18:46:39,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:46:39,226 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:46:39,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:46:39,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:46:39,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:46:39,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:46:39" (1/1) ... [2021-02-23 18:46:39,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5debbbb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:39, skipping insertion in model container [2021-02-23 18:46:39,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:46:39" (1/1) ... [2021-02-23 18:46:39,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:46:39,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:46:39,422 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs2f.c[588,601] [2021-02-23 18:46:39,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:46:39,456 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:46:39,474 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs2f.c[588,601] [2021-02-23 18:46:39,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:46:39,530 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:46:39,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:39 WrapperNode [2021-02-23 18:46:39,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:46:39,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:46:39,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:46:39,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:46:39,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:39" (1/1) ... [2021-02-23 18:46:39,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:39" (1/1) ... [2021-02-23 18:46:39,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:39" (1/1) ... [2021-02-23 18:46:39,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:39" (1/1) ... [2021-02-23 18:46:39,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:39" (1/1) ... [2021-02-23 18:46:39,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:39" (1/1) ... [2021-02-23 18:46:39,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:39" (1/1) ... [2021-02-23 18:46:39,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:46:39,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:46:39,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:46:39,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:46:39,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:46:39,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:46:39,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:46:39,745 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:46:39,745 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:46:39,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:46:39,746 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:46:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:46:39,746 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:46:39,747 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:46:39,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:46:39,747 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:46:39,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:46:39,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:46:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:46:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:46:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:46:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:46:39,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:46:39,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:46:39,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:46:39,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:46:39,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:46:40,232 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:46:40,233 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 18:46:40,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:46:40 BoogieIcfgContainer [2021-02-23 18:46:40,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:46:40,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:46:40,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:46:40,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:46:40,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:46:39" (1/3) ... [2021-02-23 18:46:40,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b573e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:46:40, skipping insertion in model container [2021-02-23 18:46:40,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:39" (2/3) ... [2021-02-23 18:46:40,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b573e24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:46:40, skipping insertion in model container [2021-02-23 18:46:40,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:46:40" (3/3) ... [2021-02-23 18:46:40,247 INFO L111 eAbstractionObserver]: Analyzing ICFG brs2f.c [2021-02-23 18:46:40,257 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:46:40,263 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:46:40,286 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:46:40,321 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:46:40,322 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:46:40,322 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:46:40,322 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:46:40,322 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:46:40,323 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:46:40,323 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:46:40,323 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:46:40,347 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2021-02-23 18:46:40,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-23 18:46:40,365 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:40,366 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] [2021-02-23 18:46:40,367 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:40,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:40,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1589495831, now seen corresponding path program 1 times [2021-02-23 18:46:40,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:40,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231330278] [2021-02-23 18:46:40,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:40,491 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:40,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:40,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,813 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:46:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:40,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:46:40,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231330278] [2021-02-23 18:46:40,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:40,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:46:40,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951416345] [2021-02-23 18:46:40,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:46:40,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:40,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:46:40,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:46:40,860 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2021-02-23 18:46:41,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:41,130 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2021-02-23 18:46:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:46:41,136 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2021-02-23 18:46:41,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:41,145 INFO L225 Difference]: With dead ends: 107 [2021-02-23 18:46:41,146 INFO L226 Difference]: Without dead ends: 52 [2021-02-23 18:46:41,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:46:41,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-23 18:46:41,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-02-23 18:46:41,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-02-23 18:46:41,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-02-23 18:46:41,207 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 35 [2021-02-23 18:46:41,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:41,207 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-02-23 18:46:41,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:46:41,208 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-02-23 18:46:41,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-23 18:46:41,209 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:41,210 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] [2021-02-23 18:46:41,210 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:46:41,210 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:41,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:41,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1961847080, now seen corresponding path program 1 times [2021-02-23 18:46:41,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:41,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2106619578] [2021-02-23 18:46:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:41,215 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:41,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:41,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:41,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:41,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:41,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:41,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:41,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:46:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:41,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:46:41,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2106619578] [2021-02-23 18:46:41,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:41,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:46:41,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995688033] [2021-02-23 18:46:41,438 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:46:41,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:41,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:46:41,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:46:41,440 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 5 states. [2021-02-23 18:46:41,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:41,730 INFO L93 Difference]: Finished difference Result 86 states and 96 transitions. [2021-02-23 18:46:41,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:46:41,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2021-02-23 18:46:41,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:41,732 INFO L225 Difference]: With dead ends: 86 [2021-02-23 18:46:41,733 INFO L226 Difference]: Without dead ends: 61 [2021-02-23 18:46:41,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:46:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-23 18:46:41,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2021-02-23 18:46:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-23 18:46:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2021-02-23 18:46:41,751 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 35 [2021-02-23 18:46:41,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:41,752 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2021-02-23 18:46:41,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:46:41,752 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2021-02-23 18:46:41,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-23 18:46:41,754 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:41,754 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] [2021-02-23 18:46:41,755 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:46:41,755 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:41,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:41,756 INFO L82 PathProgramCache]: Analyzing trace with hash 2023038414, now seen corresponding path program 1 times [2021-02-23 18:46:41,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:41,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329821715] [2021-02-23 18:46:41,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:41,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 18:46:41,904 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:41,906 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:41,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:41,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:41,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:41,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:46:42,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:42,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:42,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:42,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:46:42,020 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:42,021 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:46:42,028 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:42,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:42,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:42,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:42,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:42,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:46:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:42,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:42,080 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:42,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:46:42,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329821715] [2021-02-23 18:46:42,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:42,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 18:46:42,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444765016] [2021-02-23 18:46:42,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 18:46:42,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:42,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 18:46:42,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-02-23 18:46:42,093 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand 8 states. [2021-02-23 18:46:42,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:42,401 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2021-02-23 18:46:42,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 18:46:42,402 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 47 [2021-02-23 18:46:42,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:42,403 INFO L225 Difference]: With dead ends: 71 [2021-02-23 18:46:42,404 INFO L226 Difference]: Without dead ends: 65 [2021-02-23 18:46:42,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-02-23 18:46:42,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-02-23 18:46:42,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2021-02-23 18:46:42,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-23 18:46:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-02-23 18:46:42,418 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 47 [2021-02-23 18:46:42,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:42,418 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-02-23 18:46:42,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 18:46:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-02-23 18:46:42,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-02-23 18:46:42,421 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:42,421 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-23 18:46:42,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:46:42,421 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:42,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:42,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1679168281, now seen corresponding path program 1 times [2021-02-23 18:46:42,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:42,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091011203] [2021-02-23 18:46:42,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:45,894 WARN L202 SmtUtils]: Spent 1.42 s on a formula simplification that was a NOOP. DAG size: 27 [2021-02-23 18:46:45,900 WARN L141 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size [2021-02-23 18:46:45,907 WARN L147 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size 32 [2021-02-23 18:46:45,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:45,934 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-23 18:46:45,935 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:45,937 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:45,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:45,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:45,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:45,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:45,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:45,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:46,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:46,008 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:46,014 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,015 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:46,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,024 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:46,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,035 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:46,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:46,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:46,084 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:46,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:46:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:46,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:46,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:46:46,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091011203] [2021-02-23 18:46:46,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:46,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 18:46:46,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172854482] [2021-02-23 18:46:46,098 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 18:46:46,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:46,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 18:46:46,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:46:46,099 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand 10 states. [2021-02-23 18:46:46,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:46,424 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2021-02-23 18:46:46,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 18:46:46,428 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2021-02-23 18:46:46,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:46,435 INFO L225 Difference]: With dead ends: 99 [2021-02-23 18:46:46,439 INFO L226 Difference]: Without dead ends: 70 [2021-02-23 18:46:46,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-02-23 18:46:46,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-23 18:46:46,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2021-02-23 18:46:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-02-23 18:46:46,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2021-02-23 18:46:46,463 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 57 [2021-02-23 18:46:46,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:46,464 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2021-02-23 18:46:46,464 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 18:46:46,464 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2021-02-23 18:46:46,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-23 18:46:46,472 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:46,473 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:46:46,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:46:46,473 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:46,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:46,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1143886366, now seen corresponding path program 2 times [2021-02-23 18:46:46,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:46,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2023523988] [2021-02-23 18:46:46,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:46,555 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:46,557 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:46,629 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:46,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:46,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:46,655 WARN L141 QuantifierPusher]: treesize reduction 29, result has 59.7 percent of original size [2021-02-23 18:46:46,663 WARN L147 QuantifierPusher]: treesize reduction 29, result has 59.7 percent of original size 43 [2021-02-23 18:46:46,694 WARN L141 QuantifierPusher]: treesize reduction 69, result has 48.1 percent of original size [2021-02-23 18:46:46,703 WARN L147 QuantifierPusher]: treesize reduction 69, result has 48.1 percent of original size 64 [2021-02-23 18:46:46,707 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,708 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:46,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:46,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:46,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:46:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:46,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:46,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:46:46,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2023523988] [2021-02-23 18:46:46,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:46,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:46:46,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364812563] [2021-02-23 18:46:46,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:46:46,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:46,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:46:46,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:46:46,768 INFO L87 Difference]: Start difference. First operand 65 states and 68 transitions. Second operand 6 states. [2021-02-23 18:46:46,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:46,953 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2021-02-23 18:46:46,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 18:46:46,953 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2021-02-23 18:46:46,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:46,955 INFO L225 Difference]: With dead ends: 99 [2021-02-23 18:46:46,955 INFO L226 Difference]: Without dead ends: 68 [2021-02-23 18:46:46,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-23 18:46:46,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-02-23 18:46:46,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2021-02-23 18:46:46,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-23 18:46:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-02-23 18:46:46,967 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 63 [2021-02-23 18:46:46,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:46,968 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-02-23 18:46:46,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:46:46,968 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-02-23 18:46:46,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-23 18:46:46,969 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:46,969 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:46:46,969 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:46:46,969 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:46,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:46,970 INFO L82 PathProgramCache]: Analyzing trace with hash 171209090, now seen corresponding path program 1 times [2021-02-23 18:46:46,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:46,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1326640790] [2021-02-23 18:46:46,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:47,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-23 18:46:47,151 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:47,153 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:47,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:47,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:46:47,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:46:47,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:46:47,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:46:47,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 18:46:47,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:46:47,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:46:47,341 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-23 18:46:47,370 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,372 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-23 18:46:47,401 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,402 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-23 18:46:47,434 WARN L141 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size [2021-02-23 18:46:47,436 WARN L147 QuantifierPusher]: treesize reduction 3, result has 90.9 percent of original size 30 [2021-02-23 18:46:47,470 WARN L141 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size [2021-02-23 18:46:47,472 WARN L147 QuantifierPusher]: treesize reduction 3, result has 91.7 percent of original size 33 [2021-02-23 18:46:47,508 WARN L141 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-02-23 18:46:47,510 WARN L147 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size 28 [2021-02-23 18:46:47,552 WARN L141 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size [2021-02-23 18:46:47,553 WARN L147 QuantifierPusher]: treesize reduction 3, result has 90.3 percent of original size 28 [2021-02-23 18:46:47,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,590 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-23 18:46:47,626 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-02-23 18:46:47,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:46:47,714 WARN L141 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size [2021-02-23 18:46:47,715 WARN L147 QuantifierPusher]: treesize reduction 2, result has 85.7 percent of original size 12 [2021-02-23 18:46:47,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:46:47,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:47,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:46:47,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:46:47,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:47,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:47,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,927 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:47,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:46:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:47,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:47,931 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:47,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:46:47,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1326640790] [2021-02-23 18:46:47,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:47,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-02-23 18:46:47,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848378892] [2021-02-23 18:46:47,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-23 18:46:47,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:47,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-23 18:46:47,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2021-02-23 18:46:47,954 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 25 states. [2021-02-23 18:46:50,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:50,946 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions. [2021-02-23 18:46:50,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-02-23 18:46:50,946 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 63 [2021-02-23 18:46:50,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:50,952 INFO L225 Difference]: With dead ends: 136 [2021-02-23 18:46:50,953 INFO L226 Difference]: Without dead ends: 111 [2021-02-23 18:46:50,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=497, Invalid=2583, Unknown=0, NotChecked=0, Total=3080 [2021-02-23 18:46:50,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-02-23 18:46:51,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2021-02-23 18:46:51,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2021-02-23 18:46:51,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions. [2021-02-23 18:46:51,007 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 63 [2021-02-23 18:46:51,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:51,007 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions. [2021-02-23 18:46:51,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2021-02-23 18:46:51,007 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions. [2021-02-23 18:46:51,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-02-23 18:46:51,008 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:51,008 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-02-23 18:46:51,009 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 18:46:51,009 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:51,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:51,009 INFO L82 PathProgramCache]: Analyzing trace with hash 262134155, now seen corresponding path program 2 times [2021-02-23 18:46:51,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:51,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851896459] [2021-02-23 18:46:51,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:54,324 WARN L202 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 27 [2021-02-23 18:46:54,327 WARN L141 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size [2021-02-23 18:46:54,331 WARN L147 QuantifierPusher]: treesize reduction 14, result has 69.6 percent of original size 32 [2021-02-23 18:46:54,331 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:54,333 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:54,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:54,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:54,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:54,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:54,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:54,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:54,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:54,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:54,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:54,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:46:54,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:46:54,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:46:54,517 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,518 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:54,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:54,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:54,566 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:54,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:46:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:54,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:54,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:54,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:46:54,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851896459] [2021-02-23 18:46:54,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:54,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 18:46:54,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979946373] [2021-02-23 18:46:54,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 18:46:54,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:54,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 18:46:54,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-02-23 18:46:54,582 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand 14 states. [2021-02-23 18:46:55,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:55,370 INFO L93 Difference]: Finished difference Result 136 states and 144 transitions. [2021-02-23 18:46:55,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-23 18:46:55,371 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 69 [2021-02-23 18:46:55,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:55,372 INFO L225 Difference]: With dead ends: 136 [2021-02-23 18:46:55,372 INFO L226 Difference]: Without dead ends: 115 [2021-02-23 18:46:55,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2021-02-23 18:46:55,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-02-23 18:46:55,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 76. [2021-02-23 18:46:55,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-23 18:46:55,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2021-02-23 18:46:55,391 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 69 [2021-02-23 18:46:55,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:55,392 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2021-02-23 18:46:55,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 18:46:55,392 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2021-02-23 18:46:55,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-02-23 18:46:55,393 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:55,393 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:46:55,393 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-23 18:46:55,393 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:55,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:55,394 INFO L82 PathProgramCache]: Analyzing trace with hash -1850255923, now seen corresponding path program 3 times [2021-02-23 18:46:55,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:55,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044755501] [2021-02-23 18:46:55,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:55,506 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:55,508 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:55,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:55,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:55,585 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:55,586 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:55,591 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:55,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:55,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:55,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:55,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:55,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:55,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:55,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:55,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:55,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:55,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:55,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:55,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:55,645 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:55,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:55,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:46:55,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:55,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:46:55,682 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:55,683 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:55,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:55,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:55,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:55,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:55,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:55,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:46:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:55,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:55,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:46:55,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044755501] [2021-02-23 18:46:55,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:55,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 18:46:55,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215559333] [2021-02-23 18:46:55,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 18:46:55,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:55,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 18:46:55,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-02-23 18:46:55,769 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 14 states. [2021-02-23 18:46:56,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:56,245 INFO L93 Difference]: Finished difference Result 134 states and 140 transitions. [2021-02-23 18:46:56,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-23 18:46:56,246 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 73 [2021-02-23 18:46:56,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:56,247 INFO L225 Difference]: With dead ends: 134 [2021-02-23 18:46:56,247 INFO L226 Difference]: Without dead ends: 85 [2021-02-23 18:46:56,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2021-02-23 18:46:56,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-02-23 18:46:56,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 82. [2021-02-23 18:46:56,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2021-02-23 18:46:56,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2021-02-23 18:46:56,271 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 73 [2021-02-23 18:46:56,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:56,272 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2021-02-23 18:46:56,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 18:46:56,272 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2021-02-23 18:46:56,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-02-23 18:46:56,273 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:56,273 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-02-23 18:46:56,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-23 18:46:56,273 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:56,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:56,274 INFO L82 PathProgramCache]: Analyzing trace with hash 839583382, now seen corresponding path program 4 times [2021-02-23 18:46:56,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:56,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283697456] [2021-02-23 18:46:56,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:56,421 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:56,423 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:46:56,472 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:46:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:46:56,520 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:46:56,565 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:46:56,565 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:46:56,567 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-23 18:46:56,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:46:56 BoogieIcfgContainer [2021-02-23 18:46:56,593 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:46:56,597 INFO L168 Benchmark]: Toolchain (without parser) took 17380.92 ms. Allocated memory was 156.2 MB in the beginning and 242.2 MB in the end (delta: 86.0 MB). Free memory was 132.3 MB in the beginning and 210.5 MB in the end (delta: -78.2 MB). Peak memory consumption was 9.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:56,598 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 156.2 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:46:56,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.26 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 121.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:56,601 INFO L168 Benchmark]: Boogie Preprocessor took 82.21 ms. Allocated memory is still 156.2 MB. Free memory was 121.2 MB in the beginning and 119.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:56,602 INFO L168 Benchmark]: RCFGBuilder took 619.92 ms. Allocated memory is still 156.2 MB. Free memory was 119.6 MB in the beginning and 137.5 MB in the end (delta: -17.9 MB). Peak memory consumption was 22.2 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:56,603 INFO L168 Benchmark]: TraceAbstraction took 16354.70 ms. Allocated memory was 156.2 MB in the beginning and 242.2 MB in the end (delta: 86.0 MB). Free memory was 137.0 MB in the beginning and 210.5 MB in the end (delta: -73.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:56,611 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 156.2 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 303.26 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 121.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 82.21 ms. Allocated memory is still 156.2 MB. Free memory was 121.2 MB in the beginning and 119.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 619.92 ms. Allocated memory is still 156.2 MB. Free memory was 119.6 MB in the beginning and 137.5 MB in the end (delta: -17.9 MB). Peak memory consumption was 22.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 16354.70 ms. Allocated memory was 156.2 MB in the beginning and 242.2 MB in the end (delta: 86.0 MB). Free memory was 137.0 MB in the beginning and 210.5 MB in the end (delta: -73.5 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i