/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:53:41,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:53:41,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:53:41,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:53:41,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:53:41,243 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:53:41,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:53:41,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:53:41,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:53:41,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:53:41,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:53:41,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:53:41,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:53:41,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:53:41,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:53:41,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:53:41,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:53:41,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:53:41,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:53:41,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:53:41,313 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 13:53:41,371 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:53:41,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:53:41,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:53:41,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:53:41,378 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:53:41,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:53:41,378 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:53:41,378 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:53:41,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:53:41,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:53:41,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:53:41,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:53:41,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:53:41,381 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:53:41,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:53:41,382 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:53:41,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:53:41,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:53:41,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:53:41,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:53:41,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:53:41,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:53:41,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:53:41,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:53:41,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:53:41,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:53:41,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:53:41,384 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:53:41,384 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:53:41,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:53:41,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:53:41,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:53:41,895 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:53:41,896 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:53:41,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2021-02-23 13:53:41,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d567d1c0a/d90d65b499f941d19829ceb0ae21157a/FLAG64e960fe7 [2021-02-23 13:53:42,655 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:53:42,656 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i [2021-02-23 13:53:42,665 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d567d1c0a/d90d65b499f941d19829ceb0ae21157a/FLAG64e960fe7 [2021-02-23 13:53:42,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d567d1c0a/d90d65b499f941d19829ceb0ae21157a [2021-02-23 13:53:42,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:53:43,004 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:53:43,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:53:43,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:53:43,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:53:43,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:53:42" (1/1) ... [2021-02-23 13:53:43,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1357425a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:43, skipping insertion in model container [2021-02-23 13:53:43,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:53:42" (1/1) ... [2021-02-23 13:53:43,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:53:43,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:53:43,212 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i[893,906] [2021-02-23 13:53:43,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:53:43,256 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:53:43,272 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-escape-absolute.i[893,906] [2021-02-23 13:53:43,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:53:43,301 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:53:43,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:43 WrapperNode [2021-02-23 13:53:43,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:53:43,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:53:43,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:53:43,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:53:43,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:43" (1/1) ... [2021-02-23 13:53:43,321 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:43" (1/1) ... [2021-02-23 13:53:43,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:43" (1/1) ... [2021-02-23 13:53:43,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:43" (1/1) ... [2021-02-23 13:53:43,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:43" (1/1) ... [2021-02-23 13:53:43,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:43" (1/1) ... [2021-02-23 13:53:43,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:43" (1/1) ... [2021-02-23 13:53:43,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:53:43,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:53:43,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:53:43,352 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:53:43,353 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:43" (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 13:53:43,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:53:43,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:53:43,461 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:53:43,461 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:53:43,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:53:43,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:53:43,462 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:53:43,462 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:53:43,462 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 13:53:43,462 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 13:53:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:53:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:53:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:53:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:53:43,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:53:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:53:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:53:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:53:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:53:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:53:43,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:53:43,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:53:43,939 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:53:43,945 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 13:53:43,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:53:43 BoogieIcfgContainer [2021-02-23 13:53:43,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:53:43,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:53:43,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:53:43,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:53:43,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:53:42" (1/3) ... [2021-02-23 13:53:43,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d850018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:53:43, skipping insertion in model container [2021-02-23 13:53:43,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:43" (2/3) ... [2021-02-23 13:53:43,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d850018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:53:43, skipping insertion in model container [2021-02-23 13:53:43,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:53:43" (3/3) ... [2021-02-23 13:53:43,961 INFO L111 eAbstractionObserver]: Analyzing ICFG apache-escape-absolute.i [2021-02-23 13:53:43,977 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:53:43,982 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:53:44,003 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:53:44,056 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:53:44,057 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:53:44,057 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:53:44,057 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:53:44,057 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:53:44,058 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:53:44,058 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:53:44,058 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:53:44,093 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2021-02-23 13:53:44,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-23 13:53:44,105 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:53:44,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:53:44,107 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:53:44,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:53:44,118 INFO L82 PathProgramCache]: Analyzing trace with hash -494472251, now seen corresponding path program 1 times [2021-02-23 13:53:44,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:53:44,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117644482] [2021-02-23 13:53:44,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:53:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:44,480 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:44,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:44,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:44,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 13:53:44,520 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:44,521 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:53:44,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:44,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:53:44,562 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:44,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:44,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:53:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:44,612 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:44,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:44,617 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 13:53:44,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117644482] [2021-02-23 13:53:44,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:53:44,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:53:44,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318261531] [2021-02-23 13:53:44,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:53:44,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:53:44,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:53:44,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:53:44,643 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 6 states. [2021-02-23 13:53:45,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:53:45,341 INFO L93 Difference]: Finished difference Result 112 states and 207 transitions. [2021-02-23 13:53:45,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 13:53:45,344 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-02-23 13:53:45,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:53:45,354 INFO L225 Difference]: With dead ends: 112 [2021-02-23 13:53:45,355 INFO L226 Difference]: Without dead ends: 64 [2021-02-23 13:53:45,360 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-23 13:53:45,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-23 13:53:45,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2021-02-23 13:53:45,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2021-02-23 13:53:45,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2021-02-23 13:53:45,425 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 17 [2021-02-23 13:53:45,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:53:45,426 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions. [2021-02-23 13:53:45,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:53:45,426 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions. [2021-02-23 13:53:45,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-23 13:53:45,428 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:53:45,428 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:53:45,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:53:45,429 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:53:45,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:53:45,430 INFO L82 PathProgramCache]: Analyzing trace with hash -730438524, now seen corresponding path program 1 times [2021-02-23 13:53:45,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:53:45,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103862951] [2021-02-23 13:53:45,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:53:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:45,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:45,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:45,491 WARN L141 QuantifierPusher]: treesize reduction 6, result has 45.5 percent of original size [2021-02-23 13:53:45,492 WARN L147 QuantifierPusher]: treesize reduction 6, result has 45.5 percent of original size 5 [2021-02-23 13:53:45,496 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:45,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:53:45,504 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:45,506 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:53:45,513 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:45,514 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:53:45,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:45,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:45,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:53:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:45,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:45,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:45,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 13:53:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:45,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:45,601 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:45,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:53:45,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103862951] [2021-02-23 13:53:45,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:53:45,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 13:53:45,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977972080] [2021-02-23 13:53:45,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 13:53:45,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:53:45,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 13:53:45,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 13:53:45,612 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand 7 states. [2021-02-23 13:53:45,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:53:45,999 INFO L93 Difference]: Finished difference Result 63 states and 85 transitions. [2021-02-23 13:53:45,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 13:53:46,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2021-02-23 13:53:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:53:46,011 INFO L225 Difference]: With dead ends: 63 [2021-02-23 13:53:46,011 INFO L226 Difference]: Without dead ends: 61 [2021-02-23 13:53:46,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-02-23 13:53:46,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-23 13:53:46,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-23 13:53:46,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-23 13:53:46,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 83 transitions. [2021-02-23 13:53:46,032 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 83 transitions. Word has length 22 [2021-02-23 13:53:46,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:53:46,032 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 83 transitions. [2021-02-23 13:53:46,032 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 13:53:46,033 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 83 transitions. [2021-02-23 13:53:46,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-23 13:53:46,035 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:53:46,035 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:53:46,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:53:46,035 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:53:46,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:53:46,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1977228752, now seen corresponding path program 1 times [2021-02-23 13:53:46,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:53:46,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698838779] [2021-02-23 13:53:46,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:53:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:46,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,081 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,082 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-23 13:53:46,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:53:46,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:46,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,123 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 13:53:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:46,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-23 13:53:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:46,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 13:53:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:46,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 13:53:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:46,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,156 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-02-23 13:53:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:46,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-02-23 13:53:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:46,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,174 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-02-23 13:53:46,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698838779] [2021-02-23 13:53:46,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:53:46,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 13:53:46,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325816057] [2021-02-23 13:53:46,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 13:53:46,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:53:46,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 13:53:46,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 13:53:46,177 INFO L87 Difference]: Start difference. First operand 61 states and 83 transitions. Second operand 4 states. [2021-02-23 13:53:46,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:53:46,399 INFO L93 Difference]: Finished difference Result 90 states and 123 transitions. [2021-02-23 13:53:46,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 13:53:46,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2021-02-23 13:53:46,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:53:46,401 INFO L225 Difference]: With dead ends: 90 [2021-02-23 13:53:46,402 INFO L226 Difference]: Without dead ends: 61 [2021-02-23 13:53:46,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:53:46,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-23 13:53:46,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-23 13:53:46,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-23 13:53:46,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2021-02-23 13:53:46,418 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 51 [2021-02-23 13:53:46,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:53:46,418 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2021-02-23 13:53:46,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 13:53:46,419 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2021-02-23 13:53:46,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-23 13:53:46,421 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:53:46,421 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:53:46,421 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:53:46,422 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:53:46,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:53:46,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1335676676, now seen corresponding path program 1 times [2021-02-23 13:53:46,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:53:46,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040589584] [2021-02-23 13:53:46,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:53:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:46,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,476 WARN L141 QuantifierPusher]: treesize reduction 7, result has 30.0 percent of original size [2021-02-23 13:53:46,477 WARN L147 QuantifierPusher]: treesize reduction 7, result has 30.0 percent of original size 3 [2021-02-23 13:53:46,482 WARN L141 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size [2021-02-23 13:53:46,483 WARN L147 QuantifierPusher]: treesize reduction 14, result has 41.7 percent of original size 10 [2021-02-23 13:53:46,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:53:46,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:53:46,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:53:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:46,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 13:53:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:46,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-23 13:53:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:46,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 13:53:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:46,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 13:53:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:46,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,551 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-02-23 13:53:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:46,557 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-02-23 13:53:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:46,563 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,563 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,569 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-02-23 13:53:46,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040589584] [2021-02-23 13:53:46,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:53:46,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 13:53:46,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844873418] [2021-02-23 13:53:46,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 13:53:46,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:53:46,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 13:53:46,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-23 13:53:46,571 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand 7 states. [2021-02-23 13:53:46,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:53:46,917 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2021-02-23 13:53:46,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 13:53:46,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2021-02-23 13:53:46,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:53:46,919 INFO L225 Difference]: With dead ends: 68 [2021-02-23 13:53:46,920 INFO L226 Difference]: Without dead ends: 66 [2021-02-23 13:53:46,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-02-23 13:53:46,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-02-23 13:53:46,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2021-02-23 13:53:46,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-02-23 13:53:46,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2021-02-23 13:53:46,935 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 52 [2021-02-23 13:53:46,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:53:46,935 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2021-02-23 13:53:46,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 13:53:46,936 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2021-02-23 13:53:46,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-02-23 13:53:46,939 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:53:46,939 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:53:46,939 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 13:53:46,940 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:53:46,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:53:46,940 INFO L82 PathProgramCache]: Analyzing trace with hash -296574164, now seen corresponding path program 1 times [2021-02-23 13:53:46,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:53:46,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749727870] [2021-02-23 13:53:46,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:53:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:46,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:46,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 13:53:46,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:46,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 13:53:47,002 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:53:47,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:53:47,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:53:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 13:53:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-23 13:53:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,050 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 13:53:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 13:53:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,058 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-02-23 13:53:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-02-23 13:53:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-23 13:53:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-23 13:53:47,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,075 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-23 13:53:47,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,079 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-23 13:53:47,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-02-23 13:53:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,088 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-02-23 13:53:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,103 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2021-02-23 13:53:47,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749727870] [2021-02-23 13:53:47,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:53:47,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 13:53:47,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756519866] [2021-02-23 13:53:47,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 13:53:47,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:53:47,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 13:53:47,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-23 13:53:47,107 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand 7 states. [2021-02-23 13:53:47,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:53:47,420 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2021-02-23 13:53:47,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 13:53:47,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 87 [2021-02-23 13:53:47,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:53:47,430 INFO L225 Difference]: With dead ends: 74 [2021-02-23 13:53:47,430 INFO L226 Difference]: Without dead ends: 72 [2021-02-23 13:53:47,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-02-23 13:53:47,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-02-23 13:53:47,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2021-02-23 13:53:47,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2021-02-23 13:53:47,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2021-02-23 13:53:47,464 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 87 [2021-02-23 13:53:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:53:47,465 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2021-02-23 13:53:47,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 13:53:47,465 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2021-02-23 13:53:47,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-02-23 13:53:47,470 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:53:47,470 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:53:47,471 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 13:53:47,471 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:53:47,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:53:47,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1057322499, now seen corresponding path program 1 times [2021-02-23 13:53:47,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:53:47,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954340200] [2021-02-23 13:53:47,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:53:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,569 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:53:47,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:53:47,580 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:53:47,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:53:47,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,592 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:53:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 13:53:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,620 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-02-23 13:53:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,623 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-23 13:53:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,627 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-23 13:53:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,630 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-02-23 13:53:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-02-23 13:53:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,638 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,638 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-02-23 13:53:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,642 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-02-23 13:53:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,645 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,646 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-02-23 13:53:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,650 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-02-23 13:53:47,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-02-23 13:53:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-02-23 13:53:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,664 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,664 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-02-23 13:53:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:47,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:47,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:47,677 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2021-02-23 13:53:47,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954340200] [2021-02-23 13:53:47,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:53:47,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 13:53:47,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739483673] [2021-02-23 13:53:47,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 13:53:47,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:53:47,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 13:53:47,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 13:53:47,680 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand 7 states. [2021-02-23 13:53:48,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:53:48,050 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2021-02-23 13:53:48,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 13:53:48,051 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2021-02-23 13:53:48,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:53:48,052 INFO L225 Difference]: With dead ends: 75 [2021-02-23 13:53:48,052 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 13:53:48,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-02-23 13:53:48,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 13:53:48,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 13:53:48,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 13:53:48,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 13:53:48,054 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 92 [2021-02-23 13:53:48,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:53:48,054 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 13:53:48,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 13:53:48,055 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 13:53:48,055 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 13:53:48,055 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 13:53:48,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 13:53:49,078 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-23 13:53:49,078 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-23 13:53:49,079 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-23 13:53:49,079 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:53:49,079 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-23 13:53:49,079 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:53:49,079 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:53:49,079 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 13:53:49,080 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 13:53:49,080 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:53:49,080 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-23 13:53:49,080 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-23 13:53:49,080 INFO L189 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-02-23 13:53:49,080 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-23 13:53:49,080 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 24 83) no Hoare annotation was computed. [2021-02-23 13:53:49,080 INFO L189 CegarLoopUtils]: For program point L44(lines 44 80) no Hoare annotation was computed. [2021-02-23 13:53:49,080 INFO L189 CegarLoopUtils]: For program point L69(lines 69 75) no Hoare annotation was computed. [2021-02-23 13:53:49,081 INFO L189 CegarLoopUtils]: For program point L36(lines 25 83) no Hoare annotation was computed. [2021-02-23 13:53:49,081 INFO L189 CegarLoopUtils]: For program point L69-1(lines 69 75) no Hoare annotation was computed. [2021-02-23 13:53:49,081 INFO L189 CegarLoopUtils]: For program point L61(lines 61 79) no Hoare annotation was computed. [2021-02-23 13:53:49,081 INFO L185 CegarLoopUtils]: At program point L53(line 53) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2021-02-23 13:53:49,081 INFO L185 CegarLoopUtils]: At program point L45(line 45) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2021-02-23 13:53:49,081 INFO L185 CegarLoopUtils]: At program point L45-1(line 45) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2021-02-23 13:53:49,081 INFO L189 CegarLoopUtils]: For program point L37(lines 25 83) no Hoare annotation was computed. [2021-02-23 13:53:49,082 INFO L189 CegarLoopUtils]: For program point L54(lines 44 80) no Hoare annotation was computed. [2021-02-23 13:53:49,082 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 24 83) no Hoare annotation was computed. [2021-02-23 13:53:49,082 INFO L185 CegarLoopUtils]: At program point L71(line 71) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-23 13:53:49,082 INFO L185 CegarLoopUtils]: At program point L71-1(line 71) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-23 13:53:49,082 INFO L185 CegarLoopUtils]: At program point L63(line 63) the Hoare annotation is: (and (= main_~c~0 0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-23 13:53:49,082 INFO L185 CegarLoopUtils]: At program point L63-1(line 63) the Hoare annotation is: (and (= main_~c~0 0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-23 13:53:49,083 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 83) the Hoare annotation is: true [2021-02-23 13:53:49,083 INFO L185 CegarLoopUtils]: At program point L47-1(lines 46 52) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2021-02-23 13:53:49,083 INFO L185 CegarLoopUtils]: At program point L47-2(lines 47 52) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2021-02-23 13:53:49,083 INFO L185 CegarLoopUtils]: At program point L72(line 72) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-23 13:53:49,083 INFO L185 CegarLoopUtils]: At program point L56(line 56) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-23 13:53:49,083 INFO L185 CegarLoopUtils]: At program point L56-1(line 56) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-23 13:53:49,084 INFO L192 CegarLoopUtils]: At program point L81(lines 25 83) the Hoare annotation is: true [2021-02-23 13:53:49,084 INFO L189 CegarLoopUtils]: For program point L48(line 48) no Hoare annotation was computed. [2021-02-23 13:53:49,084 INFO L185 CegarLoopUtils]: At program point L73(line 73) the Hoare annotation is: (and (<= 1 main_~c~0) (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (<= (+ main_~c~0 1) main_~tokenlen~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-23 13:53:49,084 INFO L189 CegarLoopUtils]: For program point L32(line 32) no Hoare annotation was computed. [2021-02-23 13:53:49,084 INFO L185 CegarLoopUtils]: At program point L65-1(lines 64 77) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (<= 1 main_~cp~0)) (.cse2 (< main_~cp~0 main_~urilen~0))) (or (and (<= 1 main_~c~0) .cse0 .cse1 .cse2) (and (= main_~c~0 0) .cse0 .cse1 .cse2))) [2021-02-23 13:53:49,084 INFO L189 CegarLoopUtils]: For program point L57(lines 44 80) no Hoare annotation was computed. [2021-02-23 13:53:49,084 INFO L185 CegarLoopUtils]: At program point L49(line 49) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-23 13:53:49,085 INFO L185 CegarLoopUtils]: At program point L49-1(line 49) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (not (= (+ main_~cp~0 1) main_~urilen~0)) (< main_~cp~0 main_~urilen~0)) [2021-02-23 13:53:49,085 INFO L189 CegarLoopUtils]: For program point L33(line 33) no Hoare annotation was computed. [2021-02-23 13:53:49,085 INFO L189 CegarLoopUtils]: For program point L50(line 50) no Hoare annotation was computed. [2021-02-23 13:53:49,085 INFO L185 CegarLoopUtils]: At program point L42(line 42) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2021-02-23 13:53:49,085 INFO L185 CegarLoopUtils]: At program point L42-1(line 42) the Hoare annotation is: (and (< 0 (+ main_~scheme~0 1)) (<= 1 main_~cp~0) (< main_~cp~0 main_~urilen~0)) [2021-02-23 13:53:49,085 INFO L185 CegarLoopUtils]: At program point L67(line 67) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (<= 1 main_~cp~0)) (.cse2 (<= (+ main_~c~0 2) main_~tokenlen~0)) (.cse3 (not (= (+ main_~cp~0 1) main_~urilen~0))) (.cse4 (< main_~cp~0 main_~urilen~0))) (or (and (<= 1 main_~c~0) .cse0 .cse1 .cse2 .cse3 .cse4) (and (= main_~c~0 0) .cse0 .cse1 .cse2 .cse3 .cse4))) [2021-02-23 13:53:49,085 INFO L189 CegarLoopUtils]: For program point L34(line 34) no Hoare annotation was computed. [2021-02-23 13:53:49,086 INFO L185 CegarLoopUtils]: At program point L67-1(line 67) the Hoare annotation is: (let ((.cse0 (< 0 (+ main_~scheme~0 1))) (.cse1 (<= 1 main_~cp~0)) (.cse2 (<= (+ main_~c~0 2) main_~tokenlen~0)) (.cse3 (not (= (+ main_~cp~0 1) main_~urilen~0))) (.cse4 (< main_~cp~0 main_~urilen~0))) (or (and (<= 1 main_~c~0) .cse0 .cse1 .cse2 .cse3 .cse4) (and (= main_~c~0 0) .cse0 .cse1 .cse2 .cse3 .cse4))) [2021-02-23 13:53:49,086 INFO L189 CegarLoopUtils]: For program point L43(line 43) no Hoare annotation was computed. [2021-02-23 13:53:49,086 INFO L189 CegarLoopUtils]: For program point L68(line 68) no Hoare annotation was computed. [2021-02-23 13:53:49,086 INFO L189 CegarLoopUtils]: For program point L35(line 35) no Hoare annotation was computed. [2021-02-23 13:53:49,086 INFO L189 CegarLoopUtils]: For program point L35-1(lines 25 83) no Hoare annotation was computed. [2021-02-23 13:53:49,086 INFO L189 CegarLoopUtils]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2021-02-23 13:53:49,086 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-23 13:53:49,086 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2021-02-23 13:53:49,086 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2021-02-23 13:53:49,086 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-02-23 13:53:49,087 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-02-23 13:53:49,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:53:49 BoogieIcfgContainer [2021-02-23 13:53:49,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:53:49,107 INFO L168 Benchmark]: Toolchain (without parser) took 6114.07 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 128.8 MB in the beginning and 145.5 MB in the end (delta: -16.7 MB). Peak memory consumption was 122.2 MB. Max. memory is 8.0 GB. [2021-02-23 13:53:49,107 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 153.1 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:53:49,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.72 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 117.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:53:49,108 INFO L168 Benchmark]: Boogie Preprocessor took 47.71 ms. Allocated memory is still 153.1 MB. Free memory was 117.3 MB in the beginning and 115.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:53:49,109 INFO L168 Benchmark]: RCFGBuilder took 596.07 ms. Allocated memory is still 153.1 MB. Free memory was 115.8 MB in the beginning and 134.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:53:49,110 INFO L168 Benchmark]: TraceAbstraction took 5154.38 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 133.7 MB in the beginning and 145.5 MB in the end (delta: -11.8 MB). Peak memory consumption was 126.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:53:49,113 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 153.1 MB. Free memory is still 124.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 295.72 ms. Allocated memory is still 153.1 MB. Free memory was 127.8 MB in the beginning and 117.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.71 ms. Allocated memory is still 153.1 MB. Free memory was 117.3 MB in the beginning and 115.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 596.07 ms. Allocated memory is still 153.1 MB. Free memory was 115.8 MB in the beginning and 134.1 MB in the end (delta: -18.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5154.38 ms. Allocated memory was 153.1 MB in the beginning and 222.3 MB in the end (delta: 69.2 MB). Free memory was 133.7 MB in the beginning and 145.5 MB in the end (delta: -11.8 MB). Peak memory consumption was 126.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (0 < scheme + 1 && 1 <= cp) && cp < urilen - InvariantResult [Line: 64]: Loop Invariant Derived loop invariant: (((1 <= c && 0 < scheme + 1) && 1 <= cp) && cp < urilen) || (((c == 0 && 0 < scheme + 1) && 1 <= cp) && cp < urilen) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 6, TraceHistogramMax: 14, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 294 SDtfs, 277 SDslu, 334 SDs, 0 SdLazy, 1031 SolverSat, 319 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 26 LocationsWithAnnotation, 76 PreInvPairs, 105 NumberOfFragments, 469 HoareAnnotationTreeSize, 76 FomulaSimplifications, 1072 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 26 FomulaSimplificationsInter, 747 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 321 NumberOfCodeBlocks, 321 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 315 ConstructedInterpolants, 0 QuantifiedInterpolants, 37824 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 772/772 InterpolantCoveringCapability, 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 correct! Received shutdown request...