/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-lit/gj2007b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 03:44:31,092 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 03:44:31,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 03:44:31,123 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 03:44:31,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 03:44:31,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 03:44:31,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 03:44:31,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 03:44:31,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 03:44:31,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 03:44:31,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 03:44:31,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 03:44:31,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 03:44:31,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 03:44:31,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 03:44:31,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 03:44:31,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 03:44:31,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 03:44:31,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 03:44:31,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 03:44:31,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 03:44:31,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 03:44:31,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 03:44:31,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 03:44:31,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 03:44:31,169 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 03:44:31,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 03:44:31,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 03:44:31,174 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-04-16 03:44:31,187 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 03:44:31,187 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 03:44:31,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 03:44:31,190 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 03:44:31,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 03:44:31,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 03:44:31,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 03:44:31,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 03:44:31,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 03:44:31,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 03:44:31,191 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 03:44:31,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 03:44:31,191 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 03:44:31,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 03:44:31,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 03:44:31,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 03:44:31,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 03:44:31,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 03:44:31,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 03:44:31,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 03:44:31,192 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-16 03:44:31,193 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-04-16 03:44:31,193 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 03:44:31,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 03:44:31,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 03:44:31,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 03:44:31,501 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 03:44:31,502 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 03:44:31,503 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i [2021-04-16 03:44:31,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/920b80619/57ab62d614264d73861bbbb0703fe31e/FLAG91a55b283 [2021-04-16 03:44:31,910 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 03:44:31,910 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007b.i [2021-04-16 03:44:31,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/920b80619/57ab62d614264d73861bbbb0703fe31e/FLAG91a55b283 [2021-04-16 03:44:32,366 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/920b80619/57ab62d614264d73861bbbb0703fe31e [2021-04-16 03:44:32,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 03:44:32,369 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-16 03:44:32,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 03:44:32,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 03:44:32,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 03:44:32,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 03:44:32" (1/1) ... [2021-04-16 03:44:32,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@517e39c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:44:32, skipping insertion in model container [2021-04-16 03:44:32,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 03:44:32" (1/1) ... [2021-04-16 03:44:32,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 03:44:32,396 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 03:44:32,483 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-lit/gj2007b.i[895,908] [2021-04-16 03:44:32,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 03:44:32,498 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 03:44:32,506 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-lit/gj2007b.i[895,908] [2021-04-16 03:44:32,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 03:44:32,517 INFO L208 MainTranslator]: Completed translation [2021-04-16 03:44:32,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:44:32 WrapperNode [2021-04-16 03:44:32,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 03:44:32,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 03:44:32,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 03:44:32,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 03:44:32,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:44:32" (1/1) ... [2021-04-16 03:44:32,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:44:32" (1/1) ... [2021-04-16 03:44:32,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:44:32" (1/1) ... [2021-04-16 03:44:32,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:44:32" (1/1) ... [2021-04-16 03:44:32,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:44:32" (1/1) ... [2021-04-16 03:44:32,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:44:32" (1/1) ... [2021-04-16 03:44:32,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:44:32" (1/1) ... [2021-04-16 03:44:32,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 03:44:32,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 03:44:32,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 03:44:32,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 03:44:32,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:44:32" (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 [2021-04-16 03:44:32,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 03:44:32,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 03:44:32,637 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 03:44:32,637 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-04-16 03:44:32,637 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 03:44:32,637 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 03:44:32,637 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 03:44:32,637 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 03:44:32,637 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-04-16 03:44:32,637 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-04-16 03:44:32,637 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 03:44:32,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 03:44:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-04-16 03:44:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 03:44:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 03:44:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 03:44:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 03:44:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 03:44:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 03:44:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 03:44:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 03:44:32,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 03:44:32,817 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 03:44:32,818 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 03:44:32,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 03:44:32 BoogieIcfgContainer [2021-04-16 03:44:32,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 03:44:32,819 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-04-16 03:44:32,819 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-04-16 03:44:32,820 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-04-16 03:44:32,822 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 03:44:32" (1/1) ... [2021-04-16 03:44:32,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 16.04 03:44:32 BasicIcfg [2021-04-16 03:44:32,850 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-04-16 03:44:32,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 03:44:32,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 03:44:32,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 03:44:32,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 03:44:32" (1/4) ... [2021-04-16 03:44:32,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d32f67f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 03:44:32, skipping insertion in model container [2021-04-16 03:44:32,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 03:44:32" (2/4) ... [2021-04-16 03:44:32,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d32f67f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 03:44:32, skipping insertion in model container [2021-04-16 03:44:32,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 03:44:32" (3/4) ... [2021-04-16 03:44:32,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d32f67f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 03:44:32, skipping insertion in model container [2021-04-16 03:44:32,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 16.04 03:44:32" (4/4) ... [2021-04-16 03:44:32,855 INFO L111 eAbstractionObserver]: Analyzing ICFG gj2007b.iJordan [2021-04-16 03:44:32,859 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-04-16 03:44:32,862 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 03:44:32,889 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 03:44:32,918 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 03:44:32,918 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-16 03:44:32,918 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-04-16 03:44:32,918 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 03:44:32,918 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 03:44:32,918 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 03:44:32,918 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 03:44:32,918 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 03:44:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-04-16 03:44:32,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-04-16 03:44:32,939 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 03:44:32,939 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 03:44:32,940 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 03:44:32,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 03:44:32,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1113749397, now seen corresponding path program 1 times [2021-04-16 03:44:32,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 03:44:32,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298581060] [2021-04-16 03:44:32,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 03:44:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:44:33,092 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,094 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,094 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 03:44:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:44:33,168 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,169 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 03:44:33,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298581060] [2021-04-16 03:44:33,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 03:44:33,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-16 03:44:33,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746527819] [2021-04-16 03:44:33,174 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-16 03:44:33,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 03:44:33,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-16 03:44:33,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 03:44:33,187 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 03:44:33,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 03:44:33,254 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-04-16 03:44:33,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-16 03:44:33,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-04-16 03:44:33,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 03:44:33,260 INFO L225 Difference]: With dead ends: 22 [2021-04-16 03:44:33,261 INFO L226 Difference]: Without dead ends: 17 [2021-04-16 03:44:33,262 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 03:44:33,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-04-16 03:44:33,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-04-16 03:44:33,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 03:44:33,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-04-16 03:44:33,285 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2021-04-16 03:44:33,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 03:44:33,286 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-04-16 03:44:33,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 03:44:33,286 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-04-16 03:44:33,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-04-16 03:44:33,287 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 03:44:33,287 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 03:44:33,287 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 03:44:33,287 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 03:44:33,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 03:44:33,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1114672918, now seen corresponding path program 1 times [2021-04-16 03:44:33,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 03:44:33,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397907351] [2021-04-16 03:44:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 03:44:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:44:33,342 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,343 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,347 INFO L142 QuantifierPusher]: treesize reduction 12, result has 36.8 percent of original size [2021-04-16 03:44:33,348 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:33,353 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:44:33,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,357 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:44:33,361 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,362 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 03:44:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:44:33,386 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 03:44:33,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397907351] [2021-04-16 03:44:33,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 03:44:33,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-16 03:44:33,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178078998] [2021-04-16 03:44:33,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 03:44:33,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 03:44:33,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 03:44:33,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-16 03:44:33,391 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 03:44:33,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 03:44:33,538 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2021-04-16 03:44:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 03:44:33,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-04-16 03:44:33,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 03:44:33,540 INFO L225 Difference]: With dead ends: 26 [2021-04-16 03:44:33,540 INFO L226 Difference]: Without dead ends: 26 [2021-04-16 03:44:33,542 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 105.7ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-04-16 03:44:33,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-04-16 03:44:33,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-04-16 03:44:33,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.3125) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 03:44:33,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-04-16 03:44:33,554 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 11 [2021-04-16 03:44:33,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 03:44:33,558 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-04-16 03:44:33,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 03:44:33,558 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-04-16 03:44:33,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-04-16 03:44:33,558 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 03:44:33,559 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 03:44:33,559 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 03:44:33,559 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 03:44:33,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 03:44:33,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1184176601, now seen corresponding path program 1 times [2021-04-16 03:44:33,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 03:44:33,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219456800] [2021-04-16 03:44:33,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 03:44:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:44:33,601 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,601 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,602 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,602 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,606 INFO L142 QuantifierPusher]: treesize reduction 3, result has 70.0 percent of original size [2021-04-16 03:44:33,606 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:33,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:44:33,617 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,617 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:44:33,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 03:44:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:44:33,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 03:44:33,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219456800] [2021-04-16 03:44:33,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294247044] [2021-04-16 03:44:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-16 03:44:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:44:33,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2021-04-16 03:44:33,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-16 03:44:33,720 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,720 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,721 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,722 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,723 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,723 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,724 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,725 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,725 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,726 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,726 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,727 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,727 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,728 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,728 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,729 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,734 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,735 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,735 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,736 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,737 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,738 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,738 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,739 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,740 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,740 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,741 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,744 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,744 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,745 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,752 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,752 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,753 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,753 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:33,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 03:44:33,771 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:33,772 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-04-16 03:44:33,773 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,779 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,779 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,780 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,787 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,788 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,788 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,789 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,789 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,790 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,791 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,791 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,792 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,793 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 03:44:33,795 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 03:44:33,795 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 03:44:33,796 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 03:44:33,798 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-04-16 03:44:33,799 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-04-16 03:44:33,814 INFO L142 QuantifierPusher]: treesize reduction 21, result has 27.6 percent of original size [2021-04-16 03:44:33,817 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,825 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,825 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:33,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,828 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,828 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,829 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,829 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:33,836 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-04-16 03:44:33,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,837 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,837 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,838 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,838 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:33,840 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 03:44:33,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-16 03:44:33,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2021-04-16 03:44:33,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615487776] [2021-04-16 03:44:33,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-04-16 03:44:33,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 03:44:33,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-04-16 03:44:33,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-04-16 03:44:33,841 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 03:44:34,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 03:44:34,007 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2021-04-16 03:44:34,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 03:44:34,008 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-04-16 03:44:34,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 03:44:34,011 INFO L225 Difference]: With dead ends: 35 [2021-04-16 03:44:34,011 INFO L226 Difference]: Without dead ends: 33 [2021-04-16 03:44:34,013 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 149.1ms TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-04-16 03:44:34,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-04-16 03:44:34,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 19. [2021-04-16 03:44:34,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 03:44:34,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-04-16 03:44:34,018 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2021-04-16 03:44:34,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 03:44:34,018 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-04-16 03:44:34,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 8 states have internal predecessors, (18), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 03:44:34,018 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-04-16 03:44:34,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-04-16 03:44:34,019 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 03:44:34,019 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 03:44:34,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-04-16 03:44:34,243 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 03:44:34,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 03:44:34,244 INFO L82 PathProgramCache]: Analyzing trace with hash 727226116, now seen corresponding path program 1 times [2021-04-16 03:44:34,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 03:44:34,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910294791] [2021-04-16 03:44:34,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 03:44:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:44:34,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:34,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:34,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:44:34,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:44:34,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 03:44:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:44:34,300 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,300 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-04-16 03:44:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:44:34,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 03:44:34,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910294791] [2021-04-16 03:44:34,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 03:44:34,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-16 03:44:34,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206376662] [2021-04-16 03:44:34,305 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-16 03:44:34,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 03:44:34,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-16 03:44:34,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-04-16 03:44:34,306 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 03:44:34,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 03:44:34,432 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-04-16 03:44:34,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 03:44:34,432 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2021-04-16 03:44:34,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 03:44:34,434 INFO L225 Difference]: With dead ends: 30 [2021-04-16 03:44:34,434 INFO L226 Difference]: Without dead ends: 22 [2021-04-16 03:44:34,434 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 95.4ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-04-16 03:44:34,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-04-16 03:44:34,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-04-16 03:44:34,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 03:44:34,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-04-16 03:44:34,438 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2021-04-16 03:44:34,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 03:44:34,438 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-04-16 03:44:34,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 03:44:34,439 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-04-16 03:44:34,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-04-16 03:44:34,439 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 03:44:34,439 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 03:44:34,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-04-16 03:44:34,439 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 03:44:34,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 03:44:34,440 INFO L82 PathProgramCache]: Analyzing trace with hash -415543775, now seen corresponding path program 1 times [2021-04-16 03:44:34,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 03:44:34,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378723599] [2021-04-16 03:44:34,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 03:44:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:44:34,475 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,476 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,476 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:34,478 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,478 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:34,481 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,481 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:44:34,484 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,485 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:44:34,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 03:44:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:44:34,514 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,514 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-04-16 03:44:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:44:34,518 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,518 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 03:44:34,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378723599] [2021-04-16 03:44:34,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883849502] [2021-04-16 03:44:34,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-16 03:44:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 03:44:34,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 15 conjunts are in the unsatisfiable core [2021-04-16 03:44:34,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-16 03:44:34,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,555 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,555 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,556 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,556 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,557 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,557 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,558 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,558 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,559 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,559 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,560 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,560 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,561 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,561 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,562 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,562 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,563 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,563 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,564 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,564 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,565 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,565 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,566 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,566 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,567 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,568 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,569 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,570 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:34,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,575 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:34,575 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:34,576 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,576 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:34,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,587 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,591 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,592 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,593 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,593 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,621 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-04-16 03:44:34,623 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,624 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,624 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,625 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,638 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,639 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,641 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,642 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,642 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,645 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,648 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,650 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,650 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,651 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,651 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 03:44:34,653 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,653 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,654 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-04-16 03:44:34,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 03:44:34,655 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,656 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-04-16 03:44:34,657 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,658 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,658 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:34,659 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,659 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:34,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,660 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:34,660 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,661 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:34,668 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,669 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-04-16 03:44:34,669 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:44:34,670 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,670 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:44:34,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:44:34,671 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,671 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:44:34,672 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,672 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:44:34,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:44:34,673 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 03:44:34,674 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,675 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 03:44:34,677 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,678 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 03:44:34,679 INFO L142 QuantifierPusher]: treesize reduction 7, result has 50.0 percent of original size [2021-04-16 03:44:34,679 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,679 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 03:44:34,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 03:44:34,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 03:44:34,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 03:44:34,685 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,685 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 03:44:34,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-04-16 03:44:34,687 INFO L142 QuantifierPusher]: treesize reduction 21, result has 34.4 percent of original size [2021-04-16 03:44:34,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:34,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:34,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 03:44:34,698 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:34,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:34,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,699 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 03:44:34,708 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-04-16 03:44:34,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,709 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 03:44:34,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 03:44:34,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 03:44:34,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-04-16 03:44:34,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 13 [2021-04-16 03:44:34,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609653336] [2021-04-16 03:44:34,711 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-04-16 03:44:34,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 03:44:34,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-04-16 03:44:34,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-04-16 03:44:34,712 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 03:44:35,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 03:44:35,059 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2021-04-16 03:44:35,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-04-16 03:44:35,060 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 19 [2021-04-16 03:44:35,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 03:44:35,060 INFO L225 Difference]: With dead ends: 25 [2021-04-16 03:44:35,060 INFO L226 Difference]: Without dead ends: 0 [2021-04-16 03:44:35,061 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 350.5ms TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2021-04-16 03:44:35,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-16 03:44:35,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-16 03:44:35,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-16 03:44:35,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-16 03:44:35,061 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-04-16 03:44:35,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 03:44:35,061 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-16 03:44:35,061 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 03:44:35,061 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-16 03:44:35,062 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-16 03:44:35,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-16 03:44:35,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 03:44:35 BasicIcfg [2021-04-16 03:44:35,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 03:44:35,283 INFO L168 Benchmark]: Toolchain (without parser) took 2913.53 ms. Allocated memory is still 196.1 MB. Free memory was 161.8 MB in the beginning and 86.1 MB in the end (delta: 75.8 MB). Peak memory consumption was 76.0 MB. Max. memory is 8.0 GB. [2021-04-16 03:44:35,283 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 196.1 MB. Free memory is still 178.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 03:44:35,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 146.26 ms. Allocated memory is still 196.1 MB. Free memory was 161.6 MB in the beginning and 152.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-04-16 03:44:35,283 INFO L168 Benchmark]: Boogie Preprocessor took 47.57 ms. Allocated memory is still 196.1 MB. Free memory was 152.1 MB in the beginning and 179.7 MB in the end (delta: -27.6 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. [2021-04-16 03:44:35,283 INFO L168 Benchmark]: RCFGBuilder took 247.94 ms. Allocated memory is still 196.1 MB. Free memory was 179.3 MB in the beginning and 164.5 MB in the end (delta: 14.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-04-16 03:44:35,284 INFO L168 Benchmark]: IcfgTransformer took 30.43 ms. Allocated memory is still 196.1 MB. Free memory was 164.5 MB in the beginning and 163.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-04-16 03:44:35,284 INFO L168 Benchmark]: TraceAbstraction took 2431.65 ms. Allocated memory is still 196.1 MB. Free memory was 163.0 MB in the beginning and 86.1 MB in the end (delta: 76.9 MB). Peak memory consumption was 77.5 MB. Max. memory is 8.0 GB. [2021-04-16 03:44:35,284 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 196.1 MB. Free memory is still 178.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 146.26 ms. Allocated memory is still 196.1 MB. Free memory was 161.6 MB in the beginning and 152.1 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.57 ms. Allocated memory is still 196.1 MB. Free memory was 152.1 MB in the beginning and 179.7 MB in the end (delta: -27.6 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 247.94 ms. Allocated memory is still 196.1 MB. Free memory was 179.3 MB in the beginning and 164.5 MB in the end (delta: 14.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 30.43 ms. Allocated memory is still 196.1 MB. Free memory was 164.5 MB in the beginning and 163.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2431.65 ms. Allocated memory is still 196.1 MB. Free memory was 163.0 MB in the beginning and 86.1 MB in the end (delta: 76.9 MB). Peak memory consumption was 77.5 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2368.7ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 11.5ms, AutomataDifference: 887.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 66 SDtfs, 146 SDslu, 121 SDs, 0 SdLazy, 269 SolverSat, 75 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 238.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 748.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=2, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 34.4ms AutomataMinimizationTime, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 37.6ms SsaConstructionTime, 131.6ms SatisfiabilityAnalysisTime, 655.3ms InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 351 SizeOfPredicates, 5 NumberOfNonLiveVariables, 179 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 5/10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...